Sr. Software Developer III
Washington dc, DC
Category: Development
Industry: Government
Reference ID: JN -032026-106000
Date Posted: 03/16/2026
Shortcut: http://careers.eliassen.com/yrJiJ3
Description:
Onsite in Washington, DC
The organization seeks a Sr. Software Developer III to design, build, and deliver secure, reliable enterprise software for a mission-critical federal environment. The role requires deep expertise in C#, .NET, and modern web frameworks, along with strong knowledge of secure coding, CI/CD, and containerization. You will troubleshoot production issues, modernize applications, and communicate solutions to diverse stakeholders. Your contributions will support national-level operations with a focus on security, resilience, and operational excellence.
This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.
Salary: $184,000 - $225,000/ yr. w2
Responsibilities:
- Troubleshoot and resolve production issues in a timely and effective manner.
- Work as part of a collaborative, high-performing team delivering technical solutions for mission-critical federal government systems.
- Support O&M and design, develop, and modernize custom enterprise applications.
- Apply secure coding practices across all phases of development.
- Participate in code reviews and Agile ceremonies including planning, stand-ups, and retrospectives.
- Support and contribute to CI/CD pipelines and automated deployments.
- Communicate technical decisions and solutions clearly to both technical and non-technical stakeholders.
- Establish and maintain a high level of customer trust and confidence through technical expertise and professionalism.
- Use creativity and innovation to deliver solutions that meet customer and mission needs.
Experience Requirements:
- Active Top Secret with current or previously held SCI access.
- Certification meeting DoD 8140 such as Security+ or higher.
- Azure Developer Associate, AWS Developer Associate, or recent and relevant software development certification.
- 10+ years of professional software development experience building, testing, and maintaining enterprise applications in mission-critical environments.
- Expertise in C#, .NET, .NET Framework, Entity Framework, and development using ASP.NET including WebForms, MVC, and REST APIs.
- Front-end experience with TypeScript, JavaScript, HTML, CSS, Node.js, and Angular and/or React.
- Back-end experience with database development and administration including SQL Server and T-SQL.
- Experience with source code management tools such as Azure DevOps, GitLab, or GitHub, CI/CD pipelines, and containerization using Docker.
- Strong understanding of Windows Server, PowerShell scripting, IIS hosting, Kerberos, and OIDC authentication.
- Ability to contribute immediately with minimal ramp-up in a dynamic, mission-critical environment.
Education Requirements:
- Bachelor’s degree in Computer Science or Software Engineering preferred; relevant experience may substitute.
- Security+ certification or higher.
- Azure Developer Associate certification.
- AWS Developer Associate certification.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
-
Sr. Software Developer II
Washington dc, DC
Description: Onsite in Washington dc, DC The organization seeks a Sr. Software Developer II to deliver secure and reliable software for mission-critical federal systems. The role focuses on building and modernizing enterprise applications using C#, .NE...
Date Posted: 03/16/2026 Recommended
-
Sr. Front End Developer II
Washington dc, DC
Description: Onsite in Washington, DC The organization seeks a Sr. Front End Developer II to lead UI and UX modernization for mission-critical federal applications. The role focuses on secure, high-performance front-end development using Angular or Rea...
Date Posted: 03/16/2026 Recommended
-
Java Developer
Westlake, TX
Description: Hybrid Onsite Every Other Week in Westlake, TX Our client is seeking a Java developer to build and enhance applications within the Accounts and Customer Experience area. The role covers full-stack development across on-prem and cloud platf...
Date Posted: 04/10/2026 Recommended
-
Salesforce Developer
Merrimack, NH
Description: Hybrid 50% IN OFFICE in either Merrimack, NH or Covington, KY We are seeking a highly skilled Salesforce Developer to join an agile CRM technology team supporting a large Workplace Investing organization within the financial services space...
Date Posted: 04/02/2026 Recommended
-
Full Stack Developer
Salt Lake City, UT
Description: Hybrid Onsite Every Other Week in either Salt Lake City, UT or Westlake, TX Our client seeks a Full Stack Developer to design, build, and deliver enterprise-scale, customer-facing services for modernized life events and beneficiary process...
Date Posted: 04/07/2026 Recommended
-
Full Stack Developer
Merrimack, NH
Description: Hybrid 2 weeks per month onsite in Merrimack, NH only in Merrimack, NH Our client provides a wide range of brokerage products, solutions, and services to retail and institutional investors, as well as to third-party intermediaries. Busines...
Date Posted: 03/24/2026 Recommended
-
Java/Python Software Developer
Chesterfield, MO
Description: Hybrid 2-3 days in office/week in Chesterfield, MO Our client seeks a junior to mid-level software developer to build and support scalable applications for enterprise financial and investment systems. The role focuses on Java and Python de...
Date Posted: 03/31/2026 Recommended
-
Power Apps and Power Automate Developer
Charlotte, NC
Description: Hybrid 3 days on-site in Charlotte, NC Our client seeks a Power Apps and Power Automate Developer to design and implement automation solutions that streamline workflows and integrate data across platforms. The role will build secure, scala...
Date Posted: 04/05/2026 Recommended
-
Senior C# Developer
Rockaway Township, NJ
Description: Hybrid Tues/Wed/Thurs Onsite in Rockaway Township, NJ The organization seeks a senior backend engineer to support and enhance business-critical production applications within a C#/.NET environment. The role will design and maintain secure,...
Date Posted: 04/01/2026 Recommended
-
Appian Developer
Asheville, NC
Description: Hybrid/Onsite in Asheville, NC Our client is implementing Appian to deliver process automation and requires a professional who can drive testing, deployment, and development support. The role will strengthen delivery quality, establish doc...
Date Posted: 03/25/2026 Recommended
-
Senior Full Stack Developer
Englewood, CO
Description: Hybrid 4 onsite / 1 work from home in Englewood, CO Our client seeks a senior full stack developer to support video software initiatives that power lineup offerings and integrations across upstream and downstream systems. The role requires...
Date Posted: 03/22/2026 Recommended
-
Senior API Developer
Anywhere
Description: Remote The organization seeks a Senior API Developer to design, develop, and maintain APIs and system integrations across a digital ecosystem. The role will utilize Microsoft Azure services including API Management, Application Gateway, Lo...
Date Posted: 03/23/2026 Recommended
-
Sr. KDB+ Developer
Jersey City, NJ
Description: Hybrid Onsite 5 days/week, alternating weeks in either Jersey City, NJ, TX, BOS, MMK or SMT The organization seeks a Sr. KDB+ Developer to build and maintain regulatory reporting applications across multiple asset classes. The role will de...
Date Posted: 04/07/2026 Recommended
-
Principal UX Developer
Smithfield, RI
Description: Hybrid Onsite in Providence, RI area. The Senior UX Designer/Developer will design and develop external web experiences for our client using Wix Studio, modern front-end technologies, and CMS optimization. The role will balance UX design, ...
Date Posted: 03/18/2026 Recommended
-
Back End Java Developer (FileNet/Mobile Development)
Cincinnati, OH
Description: Onsite in Cincinnati, OH Our client seeks a Back End Java engineer to design and implement FileNet content, metadata, and workflow migrations. The role will build custom Java solutions for data mapping, transformation, reconciliation, and ...
Date Posted: 04/05/2026 Recommended
-
Senior Java Developer
Boston, MA
Description: **Hybrid Onsite | Onsite in Boston, MA 4 days per week** The organization requires a Senior Java Developer to support both middle-tier server development and presentation-tier development. The role spans user interfaces through database la...
Date Posted: 04/02/2026 Recommended
-
Software Engineer - Primary Oracle SQL/PLSQL developer
Smithfield, RI
Description: Hybrid 2 weeks per month onsite in either Smithfield, RI or Jersey City, NJ Our client seeks a principal-level software engineer focused on Oracle SQL and PL/SQL to build cloud-enabled, distributed data solutions. The role will design and ...
Date Posted: 04/01/2026 Recommended
-
Senior Full Stack React.js / Node.js Developer
Englewood, CO
Description: Hybrid 4 days on-site in Englewood, CO The organization is a leading telecommunications and media provider serving over 26 million customers across 41 states under a nationally recognized brand. It ranks among the largest cable and pay TV ...
Date Posted: 03/21/2026 Recommended
-
IT Systems Technician
Camp Lejeune, NC
Description: Onsite in Camp Lejeune, NC The organization seeks an IT Systems Technician to install, configure, and maintain servers, network devices, and workstations across stand-alone and client-server environments. The role will integrate multiple i...
Date Posted: 03/23/2026 Recommended
-
Software Engineer – Specialist
Prairie du Sac, WI
Description: Hybrid 3 days on site in Prairie du Sac, WI Our client seeks a Software Engineer – Specialist to design, develop, and implement software solutions that support business processes and enhance guest experiences. The role will collaborate wit...
Date Posted: 04/02/2026 Recommended
-
Sr. Senior Platform Engineer III
Washington dc, DC
Description: Onsite in Washington dc, DC Our client seeks a Sr. Senior Platform Engineer III to design and operate Kubernetes platforms for mission-critical federal workloads. The role spans CI/CD, infrastructure automation, and platform reliability, p...
Date Posted: 04/12/2026 Recommended
-
Software Engineer – Data Engineer with Java
Smithfield, RI
Description: Hybrid 2 weeks per month onsite in Smithfield, RI Our client seeks a senior data-focused software engineer to build and enhance performance measurement and analysis platforms within a wealth management domain. The role centers on SQL, Spar...
Date Posted: 04/05/2026 Recommended
-
Senior Data Engineer
Cincinnati, OH
Description: Onsite in Cincinnati, OH The Senior Data Engineer will design and deliver scalable data solutions that enable secure data management, analytics, and business intelligence for the organization. The role requires proficiency with SQL, a mode...
Date Posted: 03/24/2026 Recommended
-
Principal Full Stack Engineer
Merrimack, NH
Description: Hybrid 50% onsite a month in Nashua, NH. We are seeking a Principal Full Stack Engineer to join a high‑impact technology team within the financial services industry, supporting modern information delivery and recordkeeping platforms. This ...
Date Posted: 03/30/2026 Recommended
-
DevOps Engineer
Greenwood Village, CO
Description: Hybrid 4 days onsite, 1 remote. in Greenwood Village, CO Our client is seeking a DevOps Engineer to design and automate AWS infrastructure, CI/CD pipelines, and secure release processes for mobile-focused platforms. The role requires deep ...
Date Posted: 04/11/2026 Recommended
-
Full Stack Engineer (Java Development / API testing)
Merrimack, NC
Description: Hybrid 50% on site in either Merrimack, NH or Westlake, TX We are seeking senior full stack engineer to build, test, and engineer REST APIs for a data platform. The role requires strong Java and Spring Boot skills, API design expertise, an...
Date Posted: 04/01/2026 Recommended
-
Senior Java Production Support Engineer (3X POSITIONS)
Durham, NC
Description: Hybrid (50% on site, 50% remote) in Durham, NC We are seeking to hire 3x strong Java Software Engineers to support production, testing, and end‑to‑end development across both legacy and next‑generation platforms. These three roles are a mi...
Date Posted: 03/24/2026 Recommended
-
Senior Product Owner
Cincinnati, OH
Description: Onsite in Cincinnati, OH The Senior Product Owner will lead an agile engineering squad to deliver and scale an AI agent chatbot for customer service. The role will define and prioritize product roadmaps, collaborate with cross-functional p...
Date Posted: 03/29/2026 Recommended
-
Senior CyberArk Engineer
Anywhere
Description: Remote Our client seeks a Senior CyberArk Engineer to support the Department of Transportation’s privileged access management program. The role will contribute to deployment, maintenance, and reporting of CyberArk across development, test,...
Date Posted: 03/29/2026 Recommended
-
Full Stack Engineer
Merrimack, NH
Description: Hybrid Onsite 5 days/week, alternating weeks in Merrimack, NH Our client operates within wealth solutions and seeks a Full Stack Engineer to deliver secure, scalable web applications. The environment is agile and collaborative, with a focu...
Date Posted: 03/24/2026 Recommended
Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contactInfoSec@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above