Design, build, and maintain secure, high-performance RESTful APIs and microservices using Java and Spring Boot. Collaborate with cross-functional teams, implement API security (OAuth2/JWT/OpenID Connect), optimize databases, integrate messaging systems, write unit/integration/API tests, participate in code reviews and architecture decisions, troubleshoot production issues, and contribute to CI/CD and DevSecOps practices.
Position Summary
We are seeking a Senior Java API Developer to design, develop, and maintain secure, scalable, and high-performance RESTful APIs and microservices. The ideal candidate has extensive experience with Java, Spring Boot, API design, cloud-native development, and modern software engineering practices. You will collaborate with cross-functional teams to build enterprise-grade applications that are reliable, scalable, and maintainable.
Key Responsibilities
- Design, develop, and maintain RESTful APIs and microservices using Java and Spring Boot.
- Build scalable, secure, and high-performance backend services.
- Develop reusable and maintainable code following clean architecture and coding best practices.
- Collaborate with product owners, architects, frontend developers, QA, and DevOps teams throughout the software development lifecycle.
- Design and optimize database schemas, queries, and data access layers.
- Implement API security using OAuth2, JWT, OpenID Connect, and other authentication mechanisms.
- Integrate with third-party services, messaging systems, and enterprise applications.
- Develop unit, integration, and API tests to ensure code quality and reliability.
- Participate in code reviews, technical design discussions, and architecture decisions.
- Troubleshoot production issues, optimize application performance, and support deployments.
- Contribute to CI/CD pipelines and DevSecOps practices.
Required Qualifications
- Bachelor's degree in Computer Science, Engineering, or a related field.
- 5–8+ years of experience in Java backend development.
- Strong proficiency in Java 11/17 and object-oriented programming principles.
- Extensive experience with Spring Boot, Spring MVC, Spring Data JPA, and Spring Security.
- Strong experience designing and developing RESTful APIs and microservices.
- Experience with Hibernate/JPA and relational databases such as PostgreSQL, MySQL, or Oracle.
- Knowledge of NoSQL databases such as MongoDB or Cassandra is a plus.
- Experience with API documentation using Swagger/OpenAPI.
- Familiarity with messaging platforms such as Kafka or RabbitMQ.
- Experience using Git and modern CI/CD tools.
- Strong understanding of Agile/Scrum development methodologies.
Preferred Qualifications
- Experience with cloud platforms such as AWS, Azure, or GCP.
- Familiarity with Docker, Kubernetes, and containerized deployments.
- Experience implementing event-driven and distributed architectures.
- Knowledge of caching technologies such as Redis or Hazelcast.
- Exposure to GraphQL is a plus.
- Understanding of observability tools such as Prometheus, Grafana, ELK Stack, or Splunk.
Technical Skills
- Programming: Java 11/17, Core Java
- Frameworks: Spring Boot, Spring MVC, Spring Security, Spring Data JPA
- API Technologies: REST, OpenAPI/Swagger, JSON, GraphQL (optional)
- Databases: PostgreSQL, MySQL, Oracle, MongoDB
- Messaging: Apache Kafka, RabbitMQ
- Build Tools: Maven, Gradle
- Testing: JUnit, Mockito, REST Assured
- CI/CD: Jenkins, GitHub Actions, GitLab CI, Azure DevOps
- Containers: Docker, Kubernetes
- Version Control: Git
Compensation, Benefits and Duration
Minimum Compensation: USD 40,000
Maximum Compensation: USD 140,000
Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role.
Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full-time employees.
This position is not available for independent contractors
No applications will be considered if received more than 120 days after the date of this post
Similar Jobs
Other • Utilities
Prospect for new small-business customers through cold calling, networking, and lead generation within an assigned territory. Identify customer needs, recommend wireless solutions, prepare proposals, negotiate and close deals, manage the sales funnel, forecast results, and grow the customer base. The role includes product training, sales meetings, relationship management, and achieving monthly sales targets.
Top Skills:
Sales Force AutomationWireless Telecommunications
Machine Learning • Payments • Security • Software • Financial Services
Provides enterprise technology support through phone, ticketing, and potentially chat channels. Troubleshoots hardware, software, network, access, and application issues; manages incidents and escalations; documents resolutions in ServiceNow or similar ITSM tools; analyzes trends and operations data; supports knowledge management, training, process improvement, and automation; and coaches junior analysts while maintaining customer service, security, and confidentiality standards.
Top Skills:
Call Center TechnologiesHardware InfrastructureItsmNetworkingServicenow
Fintech • Payments • Software • Financial Services
Own the full sales cycle for mid-market commerce merchants across Cash App Pay and Afterpay, from prospecting and discovery through negotiation, contracting, launch, and handoff. Build pipeline, develop account plans and business cases, negotiate commercial terms, coordinate cross-functional deal teams, maintain Salesforce forecasts, deliver revenue targets, and provide market feedback. The role requires strong B2B sales, executive relationship-building, commercial judgment, technical fluency, and willingness to travel.
Top Skills:
AfterpayCash App PaySalesforce
What you need to know about the Boston Tech Scene
Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.
Key Facts About Boston Tech
- Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
- Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
- Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
- Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories
