Senior Software Engineer, ZoomInfo
$140-220k
2-4 days a week in office (Waltham, MA)
Market intelligence and contact details database
Open for applications
Market intelligence and contact details database
1001+ employees
Open for applications
$140-220k
2-4 days a week in office (Waltham, MA)
1001+ employees
Company mission
To unlock the growth potential of professionals and businesses with a modern end-to-end revenue operating system.
Role
Who you are
- 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
What the job involves
- As a Senior Software Engineer on the API & MCP Platform team, you'll be at the forefront of building and scaling ZoomInfo'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 ZoomInfo's data at scale
- Your 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
- 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
Our take
It was only a few years ago when B2B sales teams relied on warm introductions and contact books. Now, cloud-based CRM, automation and Big Data are critical tools for any selling process. ZoomInfo’s B2B contact base has played a massive part in that journey.
The company primarily helps salespeople find potential customers. Crucially, ZoomInfo then leverages technology to help make that approach as successful as possible. Think contact details of the most likely budget holder at that company, signal for when and how to approach and crucial updates on the company’s fortunes.
ZoomInfo has grown significantly over the previous few years and is now shifting its approach to pursue more inorganic growth through mergers and acquisitions, acquiring several companies in 2022, including the job recruitment website Comparably.
The risk for ZoomInfo is that these moves represent expansion beyond its traditional strengths in top-of-funnel customer acquisition. The company will need to ensure that it maximises synergies in order to win in these markets. The company has expanded operations in India and is set to see further expansion, as indicated by its appearance on the Fortune Future 50 list of robust and growing companies in 2023.
Freddie
Company Specialist at Welcome to the Jungle
Insights
7% employee growth in 12 months
Company
Funding (1 round)
Jul 2004
$7m
SERIES A
Total funding: $7m
Company benefits
- Benefits for the Best You - We want our employees and their families to thrive. In addition to comprehensive benefits we offer holistic mind, body and lifestyle programs designed for overall well-being
- Base Pay - We attract and retain the best talent with competitive compensation that aligns with industry benchmarks and merit programs yearly for promotions and salary increases based on performance, time in role, and position to market
- Bonus - When you crush it, we like to celebrate! Bonuses are awarded annually in connection with company and individual performance
- Equity - We offer each employee a generous equity award in the form of RSUs, so they can directly feel the results and success of their hard work
- Vacation & Time Off - We know everyone's needs are different so we offer flexible paid time off plans including an unlimited vacation option for many employees
- Hybrid Working Model - We offer flexible hybrid remote working models to promote equity, employee wellness, and work life balance
Company HQ
Vancouver
Leadership
Henry Schuck
(Founder & CEO)Originally founded DiscoverOrg which went on to become ZoomInfo through an acquisition in 2019.
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