The Ecs Data Engineer interview guide, interview questions, salary data, and interview experiences.

Ecs Data Engineer Interview Guide

Getting ready for an Data Engineer interview at Ecs? The Ecs Data Engineer interview span across 10 to 12 different question topics. In preparing for the interview:
<ul>
<li>Know what skills are necessary for Ecs Data Engineer roles.</li>
<li>Gain insights into the Data Engineer interview process at Ecs.</li>
<li>Practice real Ecs Data Engineer interview questions.</li>
</ul>
Interview Query regularly analyzes interview experience data, and we've used that data to produce this guide, with sample interview questions and an overview of the Ecs Data Engineer interview.


Getting ready for an Data Engineer interview at Ecs? The Ecs Data Engineer interview span across 10 to 12 different question topics. In preparing for the interview:

- Know what skills are necessary for Ecs Data Engineer roles.
- Gain insights into the Data Engineer interview process at Ecs.
- Practice real Ecs Data Engineer interview questions.

Interview Query regularly analyzes interview experience data, and we've used that data to produce this guide, with sample interview questions and an overview of the Ecs Data Engineer interview.
        

Overview

Ecs Data Engineer Salary

We've gathered this data from parsing thousands of interview experiences sourced from members.

We've gathered this data from parsing thousands of interview experiences sourced from members.

Ecs Data Engineer Interview Process

Given a table called <code>employees</code>, get the largest salary of any employee by department

Example:

Input:

<code>employees</code> table

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>department</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>salary</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>
Output:

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>department</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>largest_salary</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>

Write a query to get the largest salary of any employee by department

Largest Salary by Department

You’re tasked with designing a database system for Swipe Inc., a company that manages payments for software developers. Swipe manages a set of APIs so developers can abstract payment processes for their web service and transfer control over to Swipe’s APIs to manage payment security and finance handling (contacting credit card providers, etc.)

Your database system should store a collection of API keys with their attributes, as shown in the example below:

<pre tabindex="0" class="chroma"><code>{
 &#34;API_key&#34;:{
 &#34;Transaction_list&#34;:{
 &#34;User_ID&#34;:{
 &#34;Name&#34;:{
 &#34;f_name&#34;: 
 &#34;l_name&#34;: 
 }
 &#34;Card_Details&#34;:{
 &#34;Bank&#34;:
 &#34;Card_No&#34;:
 &#34;Expiry&#34;:
 &#34;CV&#34;:
 } 
 }
 }
 &#34;Curr_balance&#34;:
 }
}
</code></pre>

What are the functional and non-functional requirements for this database?

Determine the requirements for designing a database system to store payment APIs

Swipe Payment API

You are given a dictionary with a key-value of <code>{string: number}</code> where values in the dictionary could be duplicates. You are required to extract the unique values from the dictionary where the value occurred only once.

Return a list of values where they occur only once.

Note: You can return the values in any order.

Input:

<pre tabindex="0" class="chroma"><code>dictionary = {&#34;key1&#34;: 1, &#34;key2&#34;: 1, &#34;key3&#34;: 7, &#34;key4&#34;: 3, &#34;key5&#34;: 4, &#34;key6&#34;: 7}
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>find_unique_values(dictionary) -&gt; [3,4]

#Only 3 and 4 occurred once.
</code></pre>

Dictionary Unique Values

Ecs Data Engineer Interview Questions

ECS is seeking a Lead Data Engineer to work in our Fairfax, VA office. ECS is seeking talented professionals to join our successful and growing team in building the next-generation Continuous Diagnostics and Mitigation (CDM) Cyber data solution. The CDM Program is the Cybersecurity and Infrastructure Security Agency's (CISA) dynamic approach to strengthening the cybersecurity of Federal networks and systems through better awareness and visibility into their security posture and cyber threats. ECS is responsible for designing, building, deploying, operating, and maintaining a complete 'Data Services' solution which includes the collection, normalization, visualization, and sharing of cyber data from more than 100 Federal agencies. The CDM Data Services product is an integrated suite of multiple Commercial Off the Shelf (COTS) products, software configuration packages, and custom code which work together to operate as an integrated solution tailored to meet Department of Homeland Security (DHS) requirements. We are seeking professionals who thrive in a dynamic, fast-paced, and highly collaborative environment where problem-solving, critical thinking, and a holistic approach to serving the mission are key. Our program operates within the Scaled Agile Framework (SAFe). An aptitude and enthusiasm for continuous learning, improvement, and cyber security is a must! ECS is seeking a Lead Data Engineer to serve as a key leader on the new CDM Data Services program. The Lead Data Engineer defines data requirements and provides direction and input to teams implementing capabilities to collect, process, analyze, and share data. The Lead Data Engineer defines data quality standards and develops processes and procedures to continuously inspect and report on data quality along with processes and procedures for handling data that does not conform to defined standards. The Lead Data Engineer works closely with the Government and partners to fulfill Data Governance requirements and rapidly deploy new features to optimize data quality and utility. The ideal candidate will provide thought-leadership, expert-level technical support and data-driven services across a broad portfolio of cybersecurity, risk management, and service delivery domains. Strong candidates will have a desire to drive strategic initiatives that take advantage of modern approaches to technology, data usage, and business delivery. Our customer's requirements are dynamic and complex; we are seeking individuals who can effectively balance strategic, long-term planning with the tactical day-to-day demands of supporting a mission-focused customer. The ideal candidate must be a fast learner, and able to effectively engage resources and work across teams to decompose large, complex problems into workable solutions. An aptitude for learning, strategic planning, and the ability to effectively communicate at all levels of the organization are a must. Specific Duties Include: <ul><li>Establish and lead a robust 'Data Engineering and Data Quality' team, focused on ensuring data-driven technical and performance objectives. </li><li>Lead the coordination and development of data interface control processes and documentation, data quality and assurance operations and data governance. </li><li>Work closely with the Government to define and implement a robust Data Quality Management Plan, which considers a holistic approach to whole-of-CDM data quality operations, as well as routine monitoring, reporting and triage of quality-related issues. </li><li>Define, implement, monitor and manage scalable process frameworks, aimed at meeting or exceeding Service Level Agreements (SLA) for data quality, which includes considerations for data timeliness, completeness and accuracy. </li><li>Oversee specialized troubleshooting, knowledge management and remediation efforts for data quality issues. </li><li>Serve as a technical SME and liaison between ECS engineering teams, the Government and end-users of CDM products and solutions to drive optimal data quality and data engineering operations. </li><li>Oversee the standup and facilitation of a Federal Data Governance Working Group, responsible for capturing and prioritizing feature/enhancement requests related to data objectives.</li><li>Develop and maintain an Interface Control Document (ICD) and Data Dictionaries / Data Catalogs to inform users of data holdings and system integration points.</li></ul> <ul><li>US citizenship with ability to obtain Public Trust Suitability</li><li>A minimum of six years of experience prescribing, implementing and managing the technical delivery of large-scale data engineering services to diverse organizations</li><li>At least four years of experience analyzing customer data engineering requirements and prescribing and implementing solutions to meet those requirements</li><li>Experience building and leading technical teams of 10+ people, operating enterprise-level, production operations</li><li>Knowledge of Federal Cybersecurity and Federal Cybersecurity and Risk Management Policies and practices, including: FISMA; NIST 800-37, 800-53, 800-30, 800-39; NISTIR 8286 Series, and FedRAMP</li><li>Experience creating and maintaining an Interface Control Document that define APIs, authentication/authorization mechanisms, and communication protocols between systems to enable consistent integrations</li><li>Experience creating and maintaining Data Dictionaries and/or Data Catalogs to describe data inventories and schemas to help users understand, locate, and utilize data within the system</li><li>Experience designing, implementing, and managing data schemas that comply with cyber-relevant data standards and frameworks, e.g., SCAP, STIX, OTEL, Elastic Common Schema, Splunk Common Information Model</li><li>Knowledge of data transformation processes and experience documenting and maintaining traceability of transformed data to source data</li><li>Experience utilizing data cataloging and governance tools, esp. Alation and Collibra to help organizations improve data management, collaboration, and governance</li></ul>

ECS is seeking a passionate and driven Senior Data Engineer to support an effort under the Department of Homeland Security (DHS) Office of the Chief Data Officer. In this role you will collaborate with customers, often engaging directly with non-technical personnel to understand their data related needs, propose solutions, and complete work in an efficient manner. The Senior Data Engineer performs activities associated with implementation, integration, and support of computer systems in mission-critical response operations environment and requires the development of innovative and complex data solutions, and visualizations to users. In this role you will also collaborate with the ECS technical leads to provide guidance on the overall app design, its integration with current technical stacks and the approvals of new features. This individual must be able to build and maintain data models, engineer data architectures, and develop data integrations such as extract, transform, and load (ETL) workflows and data visualization. Additionally, this individual must work closely with other architecture and engineering developers and experts to establish best practices for data analysis, modeling, designing, and building business information systems. The Senior Data Engineer will require technical knowledge in building and integrating solutions across multiple technologies and lines of business. The ideal candidate is expected to be focused, action-oriented, an effective communicator and a self-starter, capable of working independently and in a team environment. Responsibilities include: •Lead an enterprise data team in re-engineering data modules including design, model building, and establishing pipelines and workflows, to implement and maintain complex highly visible data platforms including the development of a new knowledge graph. •Collaborate with technology and business teams to develop robust, flexible, and scalable data architectures. •Develop and maintain data processing systems, infrastructure, and API integrations. •Collaborate with data engineers from DHS headquarters and components to develop, test and troubleshoot data pipelines to feed into the knowledge graph. •Advocate for and implement lean-agile engineering principles such as API-first design, continuous integration, version control, and automated testing. •Develop and curate knowledge graphs from diverse data sources in collaboration with the technical team. •Document and present critical information to stakeholders promoting the future state of the data platform as necessary. •BS degree in Computer Science or related technical field, or equivalent experience. •7+ years of experience in software development.

ECS is seeking a Senior Data Scientist to work in our Springfield, VA or St. Louis, MO office. ECS is seeking a Senior Data Scientist to work in our Springfield, VA or St. Louis, MO office. This offer is contingent upon acceptance by the government customer, validation of appropriate clearances and approval from a cognizant government contracting officer. Candidate will be submitted for Counterintelligence Polygraph after customer indoctrination. AOE Data Scientist provide data expertise and mentoring to the Eurasia Line of Business in scripting, modeling, mining, and visualization by applying moderately complex tools and algorithms to identify trends and patterns in data, as well as identifying new techniques and capabilities for analytics through conditioning of data. In addition to the duties outlines in the Base SOW, the contractor shall: <ul><li>Assist with formalizing and integrating the collection, validation, analysis, and display of data through scripts.</li><li>Analyze and interpret statistical data to identify trends or relationships among variables and factors that could affect the results of research in collaboration with ATSG.</li><li>apply complex statistical and mathematical analysis to identify trends, conflict, opportunities, solve complex analytic problems, optimize data interoperability in collaboration with ATSG.</li><li>Prepare statistical reports and/or visualization, to include graphics or other visual representations of information.</li><li>Evaluate tools for efficiency and utility for analysis and visualization of data.</li><li>Identify technology solutions, including script development, to improve analytic workflows, address complex data requests, and overcome system limitations to meet customer requirements, in line with the Eurasia LoB Data Strategy.</li><li>Process and triage code problems for data related issues.</li><li>Develop and optimizes performance regarding processes for data discovery, modeling, mining, production, and data analysis techniques.</li><li>Recommend improvements for data capture requirements to enable further analytics.</li><li>Visualize information, conducts comparative analysis, develops scripts, algorithms, or models, and develops report in results of data analysis.</li><li> Automate where possible the process for data transformations and validation to ensure the integrity, quality, and applicable mappings to the standards, for data personally created/updated, under guidance from the LoB data strategy.</li><li>Perform data conditioning techniques and processes for analytic purposes and to discard irrelevant information to identify anomalies or outliers in data.</li><li>Assist analysts identify trends, correlations, and patterns in data through mining data from multiple sources to monitor, evaluate, and forecast anticipated behaviors or events.</li></ul> <ul><li>Master's Degree or 6+ years of experience.</li><li>TS/SCI-CI Poly Clearance.</li><li>Must have experience using quantitative and qualitative techniques to solve complex problems using analytic tools and techniques such as GIS, quantitative methods and data visualization, modeling, systems analysis, comparative analysis, and database development.</li><li>Demonstrated experience relevant to managing data science projects and workflows.</li><li>Demonstrated knowledge and experience in data mining, cleansing, and exploring spatial, temporal, and non-spatial data in both structured and unstructured formats.</li><li>Must have the ability to learn an intelligence problem's essential elements of information, identify sub-processes and dependencies, locate process dysfunction, develop alternative processes or analysis, share expertise with analysts and document approaches and methods for GEOINT analysis.</li><li>Training in applied mathematics including statistics and mathematical support to provide temporal and pattern analysis, correlation of events, probability analysis, assessments of sampling, analysis of variance and error, and regression testing and analysis.</li><li>Demonstrated programming skills in languages such as JavaScript, Python, R or modeling software (eg. FME, SPSS, SAS) for processes, repeatability, efficiency, knowledge capture, hypothesis testing, visualization, and process automation.</li><li>Proficiency in MS Office suite.</li></ul>

ECS is seeking a Data Scientist to work in our Warner Robins, GA office. ECS is seeking a highly qualified Data Scientist with an active Top Secret/SCI Clearance to work on our project at Robins Air Force Base, GA. The selected candidate will be able to communicate effectively (written/verbal), possess strong interpersonal skills, be self-motivated, and be innovative in a fast-paced environment. Must hold and maintain a valid Top Secret/SCI Security Clearance. The candidate will be involved with product sustainment, product development, lab support, and engineering services in support of the Operational Flight Program (OFP), Test Program Set (TPS) development and support, Intelligence, Surveillance and Reconnaissance software and Mission Support (MS) business lines. Candidate will assist in evaluating current systems, planning of large-scale system projects, purchasing, installing and support of network communications, including LAN/WAN systems To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Essential Functions and Responsibilities: <ul><li>The selected candidate will be expected to perform at a Senior level with minimal to no assistance from junior level organic staff.</li><li>Develops plans, coordinates work teams and provides technical support to project team members.</li><li>Supports engineering function in developing, releasing, and maintaining of artificial intelligence according to the project needs.</li><li>Design, develop, and maturate artificial intelligence and implement machine learning models.</li><li>Develop generative AI and conduct advanced data analytics.</li><li>Deploy AI to production environments.</li><li>Code development and developing models in a cloud-based environment using Python.</li></ul> <ul><li>Active DoD Top Secret/SCI Clearance.</li><li>US Citizen required per contract.</li><li>BS in Data Science or Computer Science.</li><li>Minimum 4 years' experience in Artificial intelligence design, development, and maturation.</li><li>Experience in implementing and training machine learning models, development, and application of generative AI, advanced data analytics, supervised and unsupervised learning models, and deploying AI to production environments.</li><li>Experience in Python code development and developing models in a cloud-base environment.</li></ul>

ECS is seeking a Software Engineer/Applications Programmer (Int) to work in our Morgantown, WV office. Please Note: This position is contingent upon contract award. Job Description: ECS is seeking a qualified Software Engineer/Applications Programmer (Int) to support transformative science and technology solutions for the Department of Energy. This position will support the execution of multiple projects. Initial efforts will be focused upon system integration, design, and testing of software solutions. Responsibilities include: Designs and codes software components, units, and modules that meet product specification and development schedules. Tests and debugs assigned components and units, Participated in large system and subsystem planning. Adheres to product build and release schedules and strategies. Acts as a technical resource for lower-level developers. Requires comprehensive knowledge of one or more platforms and operating systems, and of programming languages. Typically requires knowledge of one or more systems architectures. Familiar with a variety of the field's concepts, practices, and procedures. Relies on experience and judgment to plan and accomplish goals. Performs a variety of complicated tasks. A wide degree of creativity and latitude is expected. Works under general supervision. This position requires technical skills in areas such as software development and systems engineering and enterprise application integration. The candidate works closely with the Project Manager, Technical Lead, direct customer leadership, and third-party modeling partners to swiftly develop solutions in an agile environment and deploy capabilities to the operational end user. The candidate cultivates an environment that promotes customer service, excellence, innovation, collaboration and teamwork. Required Skills: <ul> <li>Bachelor's Degree in software engineering, computer engineering, computer science, information technology, or a related field AND two years of practical experience in programming and coding</li> </ul> OR <ul> <li>Associate's Degree in software engineering, computer engineering, computer science, information technology, or a related field AND four years of practical experience in programming and coding</li> </ul> OR <ul> <li>Six years of practical experience in programming and coding</li> <li>Must be eligible to obtain and maintain a Top Secret or DOE Q clearance throughout the life of the contract</li> <li>Must be a US Citizen</li> <li>Must currently live in Morgantown, WV or willing to relocate</li> <li>Ability to work independently and as part of a team</li> </ul> Desired Skills: <ul> <li>Active Top Secret or DOE Q Clearance with the ability to maintain clearance throughout the life of the contract.</li> <li>Two or more years experience supporting US Government customers</li> <li>Project Management Professional certification</li> <li>Experience supporting complex government and programs of a research and development nature</li> <li>Experience with data storage, standards, and structuring of data. </li> <li>Experience utilizing containerization technologies (e.g., Docker, podman)</li> <li>Ability to automate data engineering processes within Linux environments including data wrangling and AI model development enablement</li> <li>Highly proficient in software and network security, back-up, and recovery specifications. </li> <li>Highly skilled in managing servers access for multiple, simultaneous, external vendors, Government, academia, and industry. </li> <li>Ability to coach/mentor junior technical resources.</li> </ul> ECS is an equal opportunity employer and does not discriminate or allow discrimination on the basis of race, color, religion, sex, age, sexual orientation, gender identity or expression, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, status as a crime victim, disability, protected veteran status, or any other characteristic protected by law. ECS promotes affirmative action for minorities, women, disabled persons, and veterans. ECS is a leading mid-sized provider of technology services to the United States Federal Government. We are focused on people, values and purpose. Every day, our 3800 employees focus on providing their technical talent to support the Federal Agencies and Departments of the US Government to serve, protect and defend the American People.

ECS is seeking a Senior Business Analyst to work Remote or in our Washington, D.C. area office. In support of the Department of Homeland Security, this analyst will assist with research and gathering requirements to build custom applications that will be used across the department to share information and streamline processes. As the team continues to expand its team and customer base, the senior business analyst will be expected to assist with Agile processes/meetings, perform cross team coordination, and investigate and present on new technologies and initiatives. About the Job: <ul><li>Evaluate program materials and develop innovative approaches for improvement.</li><li>Document and analyze business and functional requirements so that they may be accurately translated into process maps and technical system requirements.</li><li>Create project schedules with dependencies and clear definitions of done that can be briefed out weekly to stakeholders.</li><li>Develop comprehensive documentation that meets organizational standards, to include but not limited to basic system architectural diagrams, concepts of operations, monthly status reports.</li><li>Support the development of briefings, agendas, and other general documentation support as directed, including training material and demonstration sessions for new and existing technologies to various DHS stakeholders.</li><li>Create high-level briefings and communications materials for customers, management, and executive stakeholders.</li><li>Independently gather information from subject matter experts to develop, organize, and write procedure manuals, technical specifications, and process documentation.</li><li>Create and maintain process for Change & Configuration Management, including managing the specific changes as requested by the team.</li><li>Leverage Atlassian Suite (Jira/Confluence) to track project work and document information for the internal team and end users.</li><li>Develop and maintain detailed records of appropriate reference materials.</li><li>Research, outline, write, and edit new and existing content, working closely with various team members to understand project requirements.</li><li>Work with development and support leads to identify all documentation repositories, revise and edit, and determine the best solution for information presentation and user experience.</li><li>Develop content in alternative media forms for maximum usability, with a consistent and cohesive voice across all documentation.</li></ul> <ul><li>Must be a US Citizen.</li><li>Must be able to obtain a Public Trust.</li><li>A Bachelors degree in an appropriate field and five years of relevant experience.</li><li>Experience in systems analysis and design of information systems programs and related business processes (SDLC).</li><li>Experience coordinating and driving teams to deliver complex technical implementations and systems integrations projects.</li><li>Experience gathering end user requirements and understanding business needs to implement a streamlined customer experience solution.</li><li>Experience working with fast paced teams using Agile processes.</li><li>Excellent communication skills, both written and verbal.</li></ul>

ECS is seeking a Product Manager to work in our Fairfax, VA office / remote. ECS is seeking talented professionals to join our successful and growing team in building the next-generation Continuous Diagnostics and Mitigation (CDM) Cyber data solution. The CDM Program is the Cybersecurity and Infrastructure Security Agency's (CISA) dynamic approach to strengthening the cybersecurity of Federal networks and systems through better awareness and visibility into their security posture and cyber threats. ECS is responsible for designing, building, deploying, operating, and maintaining a complete 'Data Services' solution which includes the collection, normalization, visualization, and sharing of cyber data from more than 100 Federal agencies. The CDM Data Services product is an integrated suite of multiple Commercial Off the Shelf (COTS) products, software configuration packages, and custom code which work together to operate as an integrated solution tailored to meet Department of Homeland Security (DHS) requirements. We are seeking professionals who thrive in a dynamic, fast-paced, and highly collaborative environment where problem-solving, critical thinking, and a holistic approach to serving the mission are key. Our program operates within the Scaled Agile Framework (SAFe). An aptitude and enthusiasm for continuous learning, improvement, and cyber security is a must! The Product Manager will serve as the liaison between portfolio management, stakeholders, and Agile DevSecOps teams, translating business needs into technical actions. This Product Manager role will own the development of broadly integrated data management capabilities within the CDM solution and is responsible to drive effective implementation of related features and services. The candidate will work closely with the Solution Manager, Release Train Engineer, Systems Architect, customer PMO, other Product Managers, and Product Owners on the release train to maintain business alignment and address dependencies. The Product Manager will strategically manage the product direction for an Agile Release Train of 4-8 Agile DevSecOps teams. The Product Manager will serve as an important point of contact between the Release Train and the customer, working extensively with customer stakeholders to understand priorities and establish the product roadmap. They will then use SAFe Agile best practices to ensure the train delivers high-quality working software to fulfill the roadmap. While this is not a direct management role, a successful Product Manager will coach the Product Owners working on the Release Train. The Product Manager will stay up to date on industry trends in cybersecurity tools, technologies, and processes associated with a robust, reliable, and mature service offering. These responsibilities all result in a secure and performant cybersecurity platform. Salary Range: $147,00 - $220,000 General Description of Benefits <ul><li>Must be a US Citizen with ability to obtain Public Trust Suitability </li><li>At least 8 years' experience managing similar technical products and services, with a preference for Agile development environments. in an Agile development environment. This experience must include holding teams accountable for meeting both functional and non-functional requirements (e.g., scalability, performance, maintainability, usability, security) </li><li>At least 8 years' experience managing complex product requirements in a dynamic, multi-stakeholder environment </li><li>Excellent written, oral communication, and presentation skills </li><li>Superior leadership, project management, customer service and interpersonal skills </li><li>Industry-accepted Agile certification: Product Owner, Product Manager, or similar </li> </ul>

Ecs Data Engineer Interview Guide

Overview

Ecs Data Engineer Salary

Ecs Data Engineer Interview Process

Ecs Data Engineer Interview Questions

Ecs Data Engineer Jobs