Senior Software Engineer
St. Louis, MO
Category: Development
Industry: Financial Services
Reference ID: JN -082026-108318
Date Posted: 08/18/2026
Shortcut: http://careers.eliassen.com/0VoYD2
Description:
Hybrid 4 days in office in St. Louis, MO
Our client seeks a hands-on Senior Software Engineer to modernize and maintain a mission-critical enterprise application in AWS GovCloud. The role focuses on practical engineering, reliability, and collaboration with architects and scrum teams to deliver scalable microservices and micro-frontend solutions.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $85.00 to $95.00/hr. w2
JN -082026-108318
Responsibilities:
- Design and implement microservices using Java, Spring Boot, and TypeScript supporting event-driven and RESTful patterns.
- Build solutions on AWS GovCloud services including ECS or EKS, Lambda, EventBridge, and RDS within microservices and micro-frontend architectures.
- Reduce technical debt through dependency and framework upgrades with strong test automation.
- Implement UI test automation and BDD practices to ensure quality.
- Collaborate with enterprise architects and scrum teams to translate architecture into scalable solutions.
- Apply reusable patterns and best practices for architectural consistency.
- Participate in architecture and code reviews and technical discussions aligned with enterprise standards.
- Document designs and decisions with clear technical writing.
- Troubleshoot production issues, optimize performance, and deliver robust features.
- Contribute to both new feature development and ongoing production support in Agile sprints.
Experience Requirements:
- 5+ years of hands-on software engineering experience.
- Advanced proficiency with Java and the Spring Boot ecosystem.
- Experience with AWS Cloud services such as ECS or EKS, Lambda, and RDS or Aurora, and IaC tools like CDK or CloudFormation.
- Experience with Angular. Familiarity with micro-frontend architecture using module federation is a plus.
- Background in microservices architecture and modernization patterns such as the strangler pattern.
- Strong technical writing and communication skills.
- Collaborative approach and effective problem solving in cross-functional teams.
- Comfort with AI-enabled tools and willingness to learn and apply emerging technologies. Experience with GitLab CI/CD and Copilot is beneficial.
- Preferred experience with FedRAMP High, FISMA, or similar compliance environments.
- Track record in reducing technical debt through refactoring and automation.
- Familiarity with CI/CD, artifact management, and security scanning.
- Familiarity with observability tools such as CloudWatch, Grafana, and OpenSearch.
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.
-
Senior Software Developer
St. Louis, MO
Description: Hybrid 2-3 days on-site in St. Louis, MO Our client seeks a Senior Software Developer to support modernization and maintenance of a mission-critical enterprise application in AWS for the U.S. Treasury. The role requires full-stack developm...
Date Posted: 08/30/2026 Recommended
-
Sr. MuleSoft Platform Developer
Anywhere
Description: Remote Our client is seeking an experienced Senior MuleSoft Engineer to join the integration platform team. This is a hands-on, technical role serving as the platform owner for a MuleSoft portfolio, driving technical delivery and moderniza...
Date Posted: 08/25/2026 Recommended
-
Senior AWS Cloud Architect/Engineer
Reston
Description: On-site in Reston, VA As a Senior AWS Cloud Architect/Engineer, you will be a key player in architecting, designing, and implementing cloud solutions that empower our clients to leverage the full potential of cloud technologies. You will b...
Date Posted: 08/25/2026 Recommended
-
Senior Software Engineer
Los Angeles, CA
Description: Hybrid: Fully Remote until West LA office opens - then 3x a week onsite in Los Angeles, CA Our client seeks a Senior Software Engineer to build scalable, secure, and resilient platform services. You will design backend services and APIs, e...
Date Posted: 08/11/2026 Recommended
-
Lead Software Engineer
Los Angeles, CA
Description: Hybrid Fully Remote until West LA office opens - then 3x a week onsite in Los Angeles, CA Our client is seeking a highly skilled and motivated Lead Software Engineer to join their BaaS team, supporting partner onboarding and BaaS platform ...
Date Posted: 08/20/2026 Recommended
-
Staff (Lead) Software Engineer
Burbank, CA
Description: Hybrid 4 Days a week on-site in Burbank, CA Our client seeks a Staff (Lead) Software Engineer to build the next generation of intelligent infrastructure for the Studio Digital Supply Chain. The role blends backend engineering, workflow, an...
Date Posted: 08/07/2026 Recommended
-
Enterprise Architect
Washington, DC
Description: On-site in Washington, DC Our client seeks an Enterprise Architect to establish standards, maintain the enterprise architecture repository, and support architecture governance. The role will create data and network diagrams, capture data a...
Date Posted: 08/17/2026 Recommended
-
AI/ML Engineer
Irvine, CA
Description: On-site 3 days per week in either Irvine, CA or Portland, OR, Austin, TX or Woburn, MA Our client seeks an AI/ML Engineer to design, build, and productionize advanced machine learning and generative AI solutions supporting semiconductor ma...
Date Posted: 08/09/2026 Recommended
-
Principal Full Stack Engineer
Salem, NH
Description: On-site Every Other Week onsite / 5 days in either Physical Location or Salem, NH Our client seeks a Principal Full Stack Engineer to design and deliver modern web applications and the CI/CD automation that ships them. The role emphasizes ...
Date Posted: 08/16/2026 Recommended
-
Senior AI Engineer/Databricks Architect
Anywhere
Description: Remote Our client seeks a Senior AI Engineer to design, build, and deploy production-grade AI applications and agentic workflows at scale within the insurance domain. The role requires strong software engineering fundamentals, Databricks e...
Date Posted: 08/12/2026 Recommended
-
Senior Security Engineer
Los Angeles, CA
Description: Hybrid Fully Remote until West LA office opens - then 3x a week onsite in Los Angeles, CA Our client is seeking an experienced Senior Security Engineer with a focus on security architecture assessments across on-premises and Azure environm...
Date Posted: 08/20/2026 Recommended
-
Business Systems Analyst (BSA)
Anywhere
Description: Remote Our client is seeking a Business Systems Analyst to support the design, evaluation, configuration, and implementation of AI-powered workforce solutions and manager experiences. The role spans business analysis, solution architecture...
Date Posted: 08/11/2026 Recommended
-
Full Stack Software Engineer
Anywhere
Description: Remote Our client is seeking a Full Stack Software Engineer to join the U.S.-based Enterprise Services engineering team focused on sustaining, enhancing, and modernizing business-critical enterprise applications. The role rotates across pr...
Date Posted: 08/11/2026 Recommended
-
Product Manager, AI-Enabled Member Experience
Anywhere
Description: Remote We are seeking a senior Product Manager to help drive the transformation of our client's member experience through a new AI-first digital ecosystem. This role will focus on mobile-first product experiences, intelligent search and me...
Date Posted: 08/13/2026 Recommended
-
Snowflake Developer – .NET / SSIS
4100 Coca Cola Plaza
Description: Hybrid 4/1 in Charlotte, NC Our client seeks a Snowflake Developer with .NET / SSIS to design and deliver enterprise integrations, ETL pipelines, and API-based solutions supporting Sales, Service, and Distribution. The role emphasizes Snow...
Date Posted: 08/09/2026 Recommended
-
Python Developer
Anywhere
Description: Remote Our client seeks a Python Developer to build and maintain automated cloud-based media workflows and REST API integrations for an SDVI Rally media supply chain project. The role focuses on scalable media processing infrastructure, mi...
Date Posted: 08/11/2026 Recommended
-
Senior Software Engineer
Concord, CA
Description: Hybrid 3 days onsite in either Concord, CA or Charlotte, NC or Dallas, TX Our client is seeking a Sr Software Engineer to support, enhance, and modernize its enterprise Kafka streaming platforms. This role combines technical expertise with...
Date Posted: 08/21/2026 Recommended
-
Principal Software Engineer
Los Angeles, CA
Description: On-site in Los Angeles, CA Our client seeks a Principal Software Engineer to lead backend services and APIs for a payment processing platform supporting prominent technology partners. The role will drive technical leadership across release...
Date Posted: 08/08/2026 Recommended
-
Lead AI Engineer
Charlotte, NC
Description: Hybrid 4/1 in Charlotte, NC Our client seeks a Lead AI Engineer to guide IVR and conversational AI initiatives and to design scalable LLM and NLP solutions for high-volume customer interactions. The role will drive architecture, best pract...
Date Posted: 08/12/2026 Recommended
-
Senior Java Developer
Lake Mary, FL
Description: On-site in Lake Mary, FL Our client is seeking a Senior Java Developer to design, build, and enhance enterprise applications that support high-volume, low-latency, real-time processing. The role contributes to distributed systems architect...
Date Posted: 08/03/2026 Recommended
-
Senior Java Developer
Boston, MA
Description: On-site 4 days onsite in Boston, MA Our client seeks a Senior Java Developer to build a new cloud-based application. The consultant will design and develop services and APIs using Java, Spring Boot, and microservices on AWS. The role requi...
Date Posted: 08/22/2026 Recommended
-
Lead Data Engineer – Experimentation
Santa Monica, CA
Description: Hybrid 4 Days a week on-site in Santa Monica, CA Our client seeks a hands-on Lead Data Engineer to build and scale experimentation data foundations that power product decisions across major streaming products. The role requires strong SQL,...
Date Posted: 08/08/2026 Recommended
-
Project Manager – Customer Modeling & Anaplan Transformation
Anywhere
Description: Remote Our client seeks an experienced Project Manager to lead an enterprise transformation to modernize and automate customer modeling by implementing an Anaplan-based solution. The role oversees a multi-phase program across vendor implem...
Date Posted: 08/04/2026 Recommended
-
Full Stack Software Engineer
Greenwood Village, CO
Description: Hybrid 4 days onsite in Greenwood Village, CO Our client is seeking a Full Stack Software Engineer for the Developer Platform team to build and enhance a customer-facing Portal. You will own features end to end across a Vue 3 single-page a...
Date Posted: 08/23/2026 Recommended
-
Senior Software Engineer – Ad Intelligence Data Platform
Seattle, WA
Description: Hybrid 4 Days a week on-site in either Seattle, WA or Glendale, CA or New York City, NY or Bristol, CT Our client has an opportunity for a Senior Software Engineer – Ad Intelligence Data Platform on a 12+ month contract. The role joins the...
Date Posted: 08/21/2026 Recommended
-
Linux/Unix Platform Engineer
Cincinnati, OH
Description: On-site in Cincinnati, OH Our client is seeking a Platform Engineer to support, maintain, and enhance the Adaptiv market risk platform. The role focuses on stability, reliability, and scalability for regulatory, stress testing, and daily r...
Date Posted: 08/26/2026 Recommended
-
Fullstack Software Engineer IV
Charlotte, NC
Description: Hybrid Charlotte, NC Our client seeks a Backend-focused Fullstack Software Engineer to accelerate delivery within the Emerging Digital organization. The role will support the ACE workflow application, which relies on Temporal workflows and...
Date Posted: 08/24/2026 Recommended
-
Lead Full Stack Developer
Boston, MA
Description: Hybrid 4 days onsite in Boston, MA Our client seeks a Lead Full Stack Developer and offshore coordinator to serve as the primary liaison between business stakeholders, onsite leadership, and an established offshore development team support...
Date Posted: 08/29/2026 Recommended
-
Sr. Security Engineer (Trellix)
Washington dc, DC
Description: On-site in Washington, DC As a Sr. Security Engineer (Trellix), you will serve as the technical lead for our client's endpoint security and data protection ecosystem. You will balance day-to-day operational support with strategic cybersecu...
Date Posted: 08/25/2026 Recommended
-
Director of Cloud Infrastructure and Engineering
Owing Mills, MD
Description: Hybrid up to three days per week from home in either Owing Mills, MD or Baltimore, MD Our client seeks a Director of Cloud Infrastructure and Engineering to lead a globally distributed team that designs, develops, and deploys cloud infrast...
Date Posted: 09/01/2026 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 contact fraud@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