> Markdown version of [/jobs/ext/3469285-api-software-engineer](https://www.wearedevelopers.com/jobs/ext/3469285-api-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # API Software Engineer - **Company:** AllSTEM Connections - **Location:** Ontario, CA, United States - **Experience:** Expert - **Contract:** Temporary contract - **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Business Software, Code Reuse, Information Systems, Service-Oriented Architecture, Apigee, Information Technology, Api Gateway, Api Management, TIBCO (Software), Mulesoft, Microservices - **Published:** September 11, 2026 - **Apply:** https://www.dice.com/job-detail/56cc9bc3-9153-434a-81eb-109c086589af ## About the Role * Bachelor's degree in Computer Science, Information Systems, or a related field, or equivalent practical experience * Minimum of 5 years of professional experience spanning programming, analysis, design, development implementation, QA, and application support * Practical experience and working knowledge of Service-Oriented Architecture (SOA), Microservices, and API Gateways * Hands-on familiarity with at least one enterprise API gateway technology, such as 3Scale, MuleSoft, Apigee Edge, CA Technologies, TIBCO Mashery, Axway, or IBM API Gateway * Strong leadership and communication skills with a proven ability to work effectively across multiple cross-functional teams * U.S. citizenship or status (required to pass a Peraton Moderate background check) ## Description We are seeking an experienced and collaborative Software Engineer to design, develop, and maintain APIs across multiple lines of business within an Agile framework. In this role, you will act as a key advocate for the API Management platform, partnering with business application developers to drive customer adoption, engagement, and the reuse of robust Service-Oriented Architecture (SOA) best practices. This contract engagement runs through December 31, 2027., * Develop and maintain scalable APIs and microservices for multiple lines of business within an Agile SDLC * Collaborate cross-functionally with architects, engineers, business analysts, and service managers to align technical solutions with business goals * Evangelize SOA best practices, focusing on scalability, maintainability, and code reuse to accelerate platform adoption * Manage competing priorities and learn complex business domains quickly to deliver high-quality technical solutions, AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program. _Participation_Poster_ES.pdf We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.