API Engineer II

As a Software Engineer II -- API Engineering, you will design, develop, and optimize RESTful APIs and backend services that power Trepp's enterprise-grade platforms. You'll work primarily in Type Script/JavaScript and focus on building performant, scalable, and reliable systems. This role emphasizes strong backend engineering fundamentals, efficient coding practices (time/space complexity), and leveraging Node.js/Type Script's event-driven runtime for reactive and asynchronous workflows.

• Design, implement, test, and maintain RESTful APIs and backend services using Type Script/JavaScript (Node.js).
• Apply API design best practices: consistent resource modeling, validation, pagination, error handling, versioning, and backward compatibility.
• Implement secure authentication/authorization patterns as needed (e.g., JWT, OAuth2, API keys, RBAC).

• Write efficient, production-quality code with clear awareness of time and space complexity, choosing appropriate data structures and algorithms.
• Identify and resolve performance bottlenecks (latency, throughput, memory usage) through profiling and targeted optimization.
• Apply caching and data-access optimization patterns to improve responsiveness and reduce load (e.g., leveraging Redis appropriately).

• Build services that leverage the event-driven nature of Node.js/Type Script, including async/await, streaming, and message-based workflows.
• Implement resilient asynchronous patterns (idempotency, retries, backoff, dead-letter handling where applicable).
• Ensure workflows are observable and debuggable through structured logs, metrics, and tracing.

• Design and implement storage strategies and access patterns across data stores, including: (1) Relational:
  Postgre
  
  SQL (schema design, query optimization, migrations); (2) Cache/Key-Value:
  Redis (TTL, invalidation strategies, cache-aside patterns) and (3) No
  
  SQL: experience with at least one of Dynamo
  
  DB (key design and access patterns) OR Mongo
  
  DB (document modeling).
• Make pragmatic tradeoffs around consistency, transactions, performance, and maintainability.

• Integrate with third-party/external APIs and internal services with strong handling of timeouts, retries, rate limits, and circuit breakers.
• Design for schema evolution and backward compatibility when upstream providers change.
• Follow secure secret management and credential rotation practices; build maintainable, testable adapters/clients.

• Participate in code reviews and contribute to team standards for readability, maintainability, and reliability.
• Write unit/integration tests and support CI/CD pipelines to enable fast, safe deployments.
• Partner with product, QA, and other engineering teams to deliver high-quality solutions.

• 5 years total professional software engineering experience.
• 3 years backend engineering experience building production services in Type Script and JavaScript, with strong proficiency.
• Must-have:
  Proven RESTful API design/development experience with strong command of HTTP methods and HTTP status codes.
• Strong understanding of Node.js/Type Script asynchronous and event-driven runtime behavior (non-blocking I/O, concurrency patterns).
• Demonstrated ability to write efficient code and reason about performance using time/space complexity concepts.
• Proficiency with Postgre
  
  SQL and Redis, plus experience with at least one No
  
  SQL datastore (Dynamo
  
  DB or Mongo
  
  DB).
• Experience integrating with external APIs, including reliability patterns (timeouts, retries, rate limiting) and secure handling of credentials/secrets.
• Strong debugging skills and familiarity with observability fundamentals (logging, metrics, tracing).

• Experience with AWS (e.g., Lambda, API Gateway, SQS/SNS, Event Bridge, Dynamo
  
  DB, Cloud Watch, ECS/EKS).
• Experience with event-driven architectures and asynchronous messaging patterns (pub/sub, queues, eventual consistency).
• Experience with serverless computing and understanding of operational/performance tradeoffs (cold starts, concurrency limits, cost considerations).
• Familiarity with containerization and CI/CD (e.g., Docker, Git Hub Actions).
• Familiarity with infrastructure-as-code and deployment tooling (e.g., Terraform, Serverless Framework).
• OpenAPI Specification (Swagger) documentation experience for API definition, documentation, and collaboration.
• Familiarity with observability tooling (e.g., Open Telemetry, Datadog, Cloud Watch, ELK/Open Search) and API security best practices.

• Base salary starting from $165k plus bonus eligible.

• Base target bonus compensation structure.
• Medical, Dental, Vision insurance.
• 401K (with employer match).
• Student Debt Retirement Plan.
• Life insurance, long term disability, short term disability all covered by the company.
• Flexible paid time off (PTO).
• Sixteen (16) weeks paid primary caregiver…