{"schemaVersion":"jobsearcher.job.v1","id":"e16d619072a27dadd43a66dc","url":"https://jobsearcher.com/jobs/e16d619072a27dadd43a66dc","canonicalUrl":"https://jobsearcher.com/jobs/e16d619072a27dadd43a66dc","title":"API Developer","description":"Optomi, in partnership with a leading enterprise organization, is seeking a Senior Backend API Engineer to join its Finance Technology team for a long-term contract opportunity!This is a hybrid position requiring three days per week onsite at the organization’s Detroit, MI office.This role will focus on designing and building a reusable API platform that can support Workday Finance, BlackLine, additional SaaS products, and future business applications. The goal is to reduce repetitive development by creating common frameworks and integration patterns that can adapt to different applications and use cases.This is a fully backend-focused position with no UI development. The role will be approximately 50–60% hands-on coding and 40–50% architecture, system design, scalability, and platform development.What the right candidate will enjoy!The opportunity to build a reusable API platform that will support multiple SaaS applications, business areas, and future initiatives!A highly technical role combining hands-on Python development with architecture and system design!The ability to influence platform scalability, usability, automation, and long-term engineering standards!Working with modern technologies including Python, FastAPI, AWS, Terraform, GitLab, and CI/CD!Collaborating within a small, hands-on engineering team where individual contributors take ownership from design through production support!Creating a platform that improves the developer experience and eliminates repetitive API development!What type of experience does the right candidate have?8–12 years of backend software engineering or API development experienceStrong hands-on development experience with Python and FastAPIFamiliarity with additional Python frameworks such as Django and FlaskStrong experience designing and developing REST and SOAP APIsUnderstanding of how to support different API types within a reusable platformExperience building scalable API platforms, frameworks, or shared servicesSaaS integration experience, preferably involving Workday Finance, BlackLine, or similar platformsStrong AWS experience, including cloud-native or serverless architecturesHands-on experience using Terraform to manage AWS infrastructureExperience with GitLab repositories and CI/CD pipelinesKnowledge of API security, observability, testing, performance, and operational best practicesStrong architecture and system-design capabilitiesA product mindset focused on reusability, automation, scalability, and usabilityExperience working in an Agile environmentExposure to Claude Code or similar AI-assisted development tools is a plusResponsibilities of the right candidateDesign, develop, test, and deliver secure and scalable Python-based APIsBuild reusable components and integration patterns that support multiple applicationsDevelop integrations for Workday Finance, BlackLine, and other SaaS platformsSupport REST and SOAP services within a common platform architectureDetermine which capabilities should be shared and which should remain application-specificDesign the platform to support future applications, projects, and business areasBuild and maintain AWS infrastructure using TerraformSupport GitLab repositories, CI/CD pipelines, and deployment processesApply best practices for security, monitoring, logging, performance, and error handlingCollaborate with product, architecture, and engineering teamsOwn technical decisions, testing support, deployment readiness, and post-production supportHelp guide infrastructure and engineering practices within a small, hands-on teamPlease note: This is a W2-only opportunity. We are unable to support C2C arrangements or provide employment sponsorship now or in the future.","company":"Optomi","rawCompany":"optomi","city":"Detroit","state":"MI","isRemote":false,"isActive":false,"createdAt":"2026-09-03T10:05:42.657Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"API Developer","description":"Optomi, in partnership with a leading enterprise organization, is seeking a Senior Backend API Engineer to join its Finance Technology team for a long-term contract opportunity!This is a hybrid position requiring three days per week onsite at the organization’s Detroit, MI office.This role will focus on designing and building a reusable API platform that can support Workday Finance, BlackLine, additional SaaS products, and future business applications. The goal is to reduce repetitive development by creating common frameworks and integration patterns that can adapt to different applications and use cases.This is a fully backend-focused position with no UI development. The role will be approximately 50–60% hands-on coding and 40–50% architecture, system design, scalability, and platform development.What the right candidate will enjoy!The opportunity to build a reusable API platform that will support multiple SaaS applications, business areas, and future initiatives!A highly technical role combining hands-on Python development with architecture and system design!The ability to influence platform scalability, usability, automation, and long-term engineering standards!Working with modern technologies including Python, FastAPI, AWS, Terraform, GitLab, and CI/CD!Collaborating within a small, hands-on engineering team where individual contributors take ownership from design through production support!Creating a platform that improves the developer experience and eliminates repetitive API development!What type of experience does the right candidate have?8–12 years of backend software engineering or API development experienceStrong hands-on development experience with Python and FastAPIFamiliarity with additional Python frameworks such as Django and FlaskStrong experience designing and developing REST and SOAP APIsUnderstanding of how to support different API types within a reusable platformExperience building scalable API platforms, frameworks, or shared servicesSaaS integration experience, preferably involving Workday Finance, BlackLine, or similar platformsStrong AWS experience, including cloud-native or serverless architecturesHands-on experience using Terraform to manage AWS infrastructureExperience with GitLab repositories and CI/CD pipelinesKnowledge of API security, observability, testing, performance, and operational best practicesStrong architecture and system-design capabilitiesA product mindset focused on reusability, automation, scalability, and usabilityExperience working in an Agile environmentExposure to Claude Code or similar AI-assisted development tools is a plusResponsibilities of the right candidateDesign, develop, test, and deliver secure and scalable Python-based APIsBuild reusable components and integration patterns that support multiple applicationsDevelop integrations for Workday Finance, BlackLine, and other SaaS platformsSupport REST and SOAP services within a common platform architectureDetermine which capabilities should be shared and which should remain application-specificDesign the platform to support future applications, projects, and business areasBuild and maintain AWS infrastructure using TerraformSupport GitLab repositories, CI/CD pipelines, and deployment processesApply best practices for security, monitoring, logging, performance, and error handlingCollaborate with product, architecture, and engineering teamsOwn technical decisions, testing support, deployment readiness, and post-production supportHelp guide infrastructure and engineering practices within a small, hands-on teamPlease note: This is a W2-only opportunity. We are unable to support C2C arrangements or provide employment sponsorship now or in the future.","datePosted":"2026-09-03T10:05:42.657Z","dateModified":"2026-09-03T10:05:42.657Z","hiringOrganization":{"@type":"Organization","name":"Optomi","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Detroit","addressRegion":"MI","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"e16d619072a27dadd43a66dc"},"url":"https://jobsearcher.com/jobs/e16d619072a27dadd43a66dc"}}