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Trepp, Inc. · 10 hours ago

API Engineer

NYC Metro Area

Full-time

Hybrid

Senior Level

5+ years exp

Trepp, Inc. is seeking a Software Engineer II – API Engineering to design, develop, and optimize RESTful APIs and backend services. The role focuses on building performant and reliable systems primarily using TypeScript and JavaScript.

AnalyticsFinancial Services

Growth Opportunities

No H1B

U.S. Citizen Only

Hiring Manager

Niki Lee

Responsibilities

Design, implement, test, and maintain RESTful APIs and backend services using TypeScript/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/TypeScript, 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: PostgreSQL (schema design, query optimization, migrations); (2) Cache/Key-Value: Redis (TTL, invalidation strategies, cache-aside patterns) and (3) NoSQL: experience with at least one of DynamoDB (key design and access patterns) OR MongoDB (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

Qualification

RESTful API designTypeScriptNode.jsPostgreSQLJavaScriptRedisNoSQL databasesAPI integrationDebugging skillsEvent-driven architectureCI/CD familiarityObservability fundamentalsSoft skills

Required

5+ years total professional software engineering experience

3+ years backend engineering experience building production services in TypeScript 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/TypeScript 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 PostgreSQL and Redis, plus experience with at least one NoSQL datastore (DynamoDB or MongoDB)

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)

Preferred

Experience with AWS (e.g., Lambda, API Gateway, SQS/SNS, EventBridge, DynamoDB, CloudWatch, 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, GitHub 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., OpenTelemetry, Datadog, CloudWatch, ELK/OpenSearch) and API security best practices

Benefits

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 leave (Biological, adoptive, and foster parents are all eligible)

Four (4) weeks paid parental leave

Pet insurance

Laptop (company issued) + WFH equipment reimbursement

Career progression plan

Pre-tax commuter benefit with company subsidy (For NYC-office based employees only)

Involvement in Diversity and Inclusion programs

Fun company events and volunteering opportunities

Company

Trepp, Inc.

Trepp, founded in 1979, is the leading provider of data, insights, and technology solutions to the structured finance, commercial real estate, and banking markets.

Founded in 1979

New York, New York, USA

51-200 employees