Senior Software Engineer - API & MCP Platform Job Bethesda area,Maryland USA,Software Development

As a Senior Software Engineer on the API & MCP Platform team, you’ll be at the forefront of building and scaling Zoom Info’s API infrastructure that handles millions of API calls weekly and powers integrations across our platform. You’ll work with Java and NestJS to develop robust, secure, and high-performance API services that enable seamless connectivity for our customers and partners.

You’ll design and implement scalable API architectures, establish best practices for API security and authentication, and build infrastructure that enables partners and customers to leverage Zoom Info’s data r expertise in API design, OAuth 2.0, and emerging technologies like Model Context Protocol (MCP) will be essential in creating world‑class developer experiences.

Our engineering culture values diversity, intellectual curiosity, problem‑solving, and openness. We encourage collaboration, big thinking, and calculated risk‑taking in a blame‑free environment. You’ll have the autonomy to work on meaningful projects while receiving the support and mentorship needed to grow your career.

What You’ll Do:

Design, develop, and maintain scalable RESTful APIs using Java and NestJS framework
Build APIs that power company and contact data enrichment, search, and intelligence capabilities
Architect and implement secure authentication and authorization systems using OAuth 2.0
Build high‑performance API gateways with advanced rate limiting, throttling, and quota management
Design and implement MCP (Model Context Protocol) tools and servers to enable AI‑powered integrations
Establish and enforce API design standards, versioning strategies, and best practices across the organization
Optimize API performance, caching strategies, and response times for high‑volume traffic (millions of calls daily)
Design and implement comprehensive API documentation, SDKs, and developer tools
Create MCP tool schemas, implement prompt best practices, and optimize tool discovery patterns
Collaborate with product and integration teams to define API contracts and service‑level agreements (SLAs)
Implement monitoring, logging, and analytics for API usage patterns and performance metrics
Participate in code reviews and mentor team members on API and MCP best practices
Troubleshoot and resolve production issues in distributed API systems
Contribute to technical architecture decisions for API platform evolution

What You Bring:

Bachelor’s degree in Computer Science, a related field, or equivalent practical experience
5+ years of experience in software development with strong focus on API development
3+ years of experience designing and implementing RESTful APIs and microservices at scale
Strong expertise in Java frameworks (Spring Boot, Spring Security, Maven/Gradle)
Strong expertise in NestJS framework
Deep understanding of OAuth 2.0, OpenID Connect, JWT, and API security best practices
Experience with API gateway technologies
Proficiency with API design patterns, versioning, and documentation (OpenAPI/Swagger)
Strong knowledge of rate limiting, throttling, and API scalability strategies
Understanding of distributed systems and high‑availability architectures
Experience with MCP (Model Context Protocol) tool creation and implementation

Preferred Qualifications:

Experience releasing production MCP tools and servers
Deep knowledge of MCP best practices, prompt engineering, and tool design patterns
Familiarity with AI/LLM integration patterns and context management
Experience with cloud platforms (AWS, GCP, or Azure)
Knowledge of containerization and orchestration (Docker, Kubernetes)
Experience with CI/CD pipelines and automated API testing
Familiarity with message queuing systems (Kafka, RabbitMQ)
Experience building developer portals and API documentation platforms
Background in platform engineering or developer experience (DX) initiatives
Active contributions to open‑source API projects or MCP tool repositories

The US base salary range for this position is $140,000
–$200,000 plus variable compensation and benefits. Actual compensation offered will be based on factors such as the candidate’s work location, qualifications, skills, experience and/or training.

We want our employees and their…