315 senior software engineer backend jobs found

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Job Description Work Arrangement: Hybrid. This role is categorized as hybrid. The successful candidate is expected to report to Warren, MI, three times per week, at minimum. About the Role Join GM's Digital Products Engineering organization and help define the next generation of our subscription and billing platform . As a Staff Software Engineer (Level 8) , you will lead technical domains , drive architecture across teams, and serve as an engineering leader for billing platform. You will provide hands-on technical leadership for our Zuora integrations, scalable batch processing systems, revenue recognition systems, journal systems and onboarding experiences for millions of OnStar customers , while also setting the long-term architecture and standards for the broader billing platform. This is a senior individual contributor role: you will design, build, and optimize cloud-native solutions on Azure using modern frameworks and event-driven...

Job Title: Senior Software Engineer, Platform Service Department: Product Development About the Role : The Sr. Software Engineer is a backend and API expert, helping advance healthcare and social care interoperability through scalable platform development. This role centers on building and maintaining core APIs and services that power the Unite Us product suite, requiring experience with object-oriented programming, large-scale systems, and platform contributions. Working within the highly collaborative Platform Services team, the engineer will partner with both internal and external stakeholders, balancing multiple workstreams across greenfield and legacy systems while prioritizing team success over individual contributions. The role also involves developing integration solutions that connect the Unite Us platform with community-based organizations, Health Information Exchanges, and broader care networks; while experience in healthcare or social care is beneficial, it is not...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Job Description Job Description: Location: Hybrid. This role is categorized as hybrid. The successful candidate is expected to report to Warren, MI, three times per week, at minimum. About the Role Join GM's Digital Products Engineering organization and help define the next generation of our subscription and billing platform. As a Staff Software Engineer (Level 8) , you will lead technical domains, drive architecture across teams, and serve as an engineering leader for billing platform. You will provide hands-on technical leadership for our Zuora integrations, scalable batch processing systems, revenue recognition systems, journal systems and onboarding experiences for millions of OnStar customers, while also setting the long-term architecture and standards for the broader billing platform. This is a senior individual contributor role: you will design, build, and optimize cloud-native solutions on Azure using modern frameworks and event-driven architectures,...

Job Description Work Arrangement: Hybrid. This role is categorized as hybrid. The successful candidate is expected to report to Warren, MI, three times per week, at minimum. About the Role Join GM's Digital Products Engineering organization and help define the next generation of our subscription and billing platform . As a Staff Software Engineer (Level 8) , you will lead technical domains , drive architecture across teams, and serve as an engineering leader for billing platform. You will provide hands-on technical leadership for our Zuora integrations, scalable batch processing systems, revenue recognition systems, journal systems and onboarding experiences for millions of OnStar customers , while also setting the long-term architecture and standards for the broader billing platform. This is a senior individual contributor role: you will design, build, and optimize cloud-native solutions on Azure using modern frameworks and event-driven...

Job Title: Senior Software Engineer, Platform Service Department: Product Development About the Role : The Sr. Software Engineer is a backend and API expert, helping advance healthcare and social care interoperability through scalable platform development. This role centers on building and maintaining core APIs and services that power the Unite Us product suite, requiring experience with object-oriented programming, large-scale systems, and platform contributions. Working within the highly collaborative Platform Services team, the engineer will partner with both internal and external stakeholders, balancing multiple workstreams across greenfield and legacy systems while prioritizing team success over individual contributions. The role also involves developing integration solutions that connect the Unite Us platform with community-based organizations, Health Information Exchanges, and broader care networks; while experience in healthcare or social care is beneficial, it is not...

Job Description Job Description: Location: Hybrid. This role is categorized as hybrid. The successful candidate is expected to report to Warren, MI, three times per week, at minimum. About the Role Join GM's Digital Products Engineering organization and help define the next generation of our subscription and billing platform. As a Staff Software Engineer (Level 8) , you will lead technical domains, drive architecture across teams, and serve as an engineering leader for billing platform. You will provide hands-on technical leadership for our Zuora integrations, scalable batch processing systems, revenue recognition systems, journal systems and onboarding experiences for millions of OnStar customers, while also setting the long-term architecture and standards for the broader billing platform. This is a senior individual contributor role: you will design, build, and optimize cloud-native solutions on Azure using modern frameworks and event-driven architectures,...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

What pbl is. pbl is the loop between climbers and their gyms. Climbers log sends and rate routes in the mobile app. Their gym sees all of it in real time in the portal: what climbers love, what gets quietly skipped, whether last week's set landed the way the setter hoped. Then they turn it into the next rotation. No one has built this before. The apps are built. The doors just aren't open yet. Real gyms are waiting. This hire is one of the last pieces before we ship. The role. You'd be pbl's second engineer, working the full stack with Dylan and Jake. Typescript everywhere. Next.js on the web, react native (expo) on mobile, firebase + gcp on the backend. Shared schemas flow to both apps from a central package, so the codebase stays consistent without duplication. Nothing is siloed. You'll touch the mobile app, the portal, the cloud functions, the schemas, and the deployment pipeline in the same week. Small enough that you'll get your hands on all of it. Big enough that...

Senior API Migration Engineer (REST APIs - Cloud Migration) Anywhere Type: Contract Category: Engineer Industry: Financial Services Workplace Type: Remote Reference ID: JN -042026-106219 Date Posted: 03/31/2026 Shortcut: http://careers.eliassen.com/RO5O10 Description Recommended Jobs Description: Remote Our client seeks a Senior API Migration Engineer to lead the migration, validation, and optimization of REST APIs from on-prem Exadata to Oracle Database in the cloud. The role focuses on compatibility remediation, authentication alignment, performance tuning, and end-to-end validation using tools such as Postman or Insomnia. The engineer will coordinate with IT teams on migration strategy, testing cycles, and release readiness while maintaining reliability and security standards. This is not a net-new development role. Rate: $65.00 to $75.00/hr. w2 JN -042026-106219 #LI-JS1 Responsibilities: Lead...

Every career journey is personal. That's why we empower you with the tools and support to create your own success story. Be challenged. Be heard. Be valued. Be you ... be here. Job Summary The Senior Staff Software Engineer - Agentic AI will design and deliver core agent capabilities, including policy execution, reasoning, orchestration, and failurehandling. They will build productionready agent runtimes-state and memory systems, planners, and toolrouting components-while ensuring safety, reliability, latency, and cost efficiency. This role will contribute to multiagent workflows for classification, routing, reconciliation, anomaly detection, and decisioning. The role includes implementing deterministic paths where needed, integrating graph/RAG memory, and establishing strong observability and evaluation pipelines. You will mentor engineers and help uphold high engineering standards across the team. Essential Job Functions Design and enhance...

Every career journey is personal. That's why we empower you with the tools and support to create your own success story. Be challenged. Be heard. Be valued. Be you ... be here. Job Summary The Senior Staff Software Engineer - Agentic AI will design and deliver core agent capabilities, including policy execution, reasoning, orchestration, and failurehandling. They will build productionready agent runtimes-state and memory systems, planners, and toolrouting components-while ensuring safety, reliability, latency, and cost efficiency. This role will contribute to multiagent workflows for classification, routing, reconciliation, anomaly detection, and decisioning. The role includes implementing deterministic paths where needed, integrating graph/RAG memory, and establishing strong observability and evaluation pipelines. You will mentor engineers and help uphold high engineering standards across the team. Essential Job Functions Design and enhance...

Every career journey is personal. That's why we empower you with the tools and support to create your own success story. Be challenged. Be heard. Be valued. Be you ... be here. Job Summary The Senior Staff Software Engineer - Agentic AI will design and deliver core agent capabilities, including policy execution, reasoning, orchestration, and failurehandling. They will build productionready agent runtimes-state and memory systems, planners, and toolrouting components-while ensuring safety, reliability, latency, and cost efficiency. This role will contribute to multiagent workflows for classification, routing, reconciliation, anomaly detection, and decisioning. The role includes implementing deterministic paths where needed, integrating graph/RAG memory, and establishing strong observability and evaluation pipelines. You will mentor engineers and help uphold high engineering standards across the team. Essential Job Functions Design and enhance...

Every career journey is personal. That's why we empower you with the tools and support to create your own success story. Be challenged. Be heard. Be valued. Be you ... be here. Job Summary The Senior Staff Software Engineer - Agentic AI will design and deliver core agent capabilities, including policy execution, reasoning, orchestration, and failurehandling. They will build productionready agent runtimes-state and memory systems, planners, and toolrouting components-while ensuring safety, reliability, latency, and cost efficiency. This role will contribute to multiagent workflows for classification, routing, reconciliation, anomaly detection, and decisioning. The role includes implementing deterministic paths where needed, integrating graph/RAG memory, and establishing strong observability and evaluation pipelines. You will mentor engineers and help uphold high engineering standards across the team. Essential Job Functions Design and enhance...

Job Description As a Senior Software Engineer focused on Agentic, LLM-powered applications, you will design, develop, and optimize intelligent systems and autonomous agents. You will work across the full stack of agent development-from prompt engineering and LLM integration to observability, orchestration, and cloud-native deployment. This role requires deep technical expertise with Python, modern LLM frameworks, and AWS services, along with hands-on experience building reliable, scalable AI-driven systems. We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry,...