Senior Backend Engineer (Remote)

We are assisting one of our clients, a new exciting startup which is looking for a full remote:

Senior Backend Engineer Responsibilities Architect, build, and optimize backend systems using TypeScript, NestJS, and Hono. Design and document scalable, secure APIs and microservices following OpenAPI/Swagger standards.

Build robust authentication & authorization frameworks:

JWT, OAuth2, API keys RBAC/ABAC permissions Session security & secure cookies

• Implement code-level security patterns aligned with OWASP Top 10, including input validation, secure headers, CSRF/XSS mitigation, rate limiting, and safe error handling.
• Design performant, maintainable MongoDB schemas; optimize queries, indexes, and aggregations.
• Work closely with DevOps to build cloud-native systems running on AWS EKS, with CI/CD, load balancing, and auto-scaling.
• Implement secure and optimized content delivery with AWS CloudFront (signed URLs/cookies, CDN caching).
• Build event-driven and distributed systems using queues/streams (Redis, RabbitMQ, Kafka, SQS).
• Maintain documentation, enforce engineering standards, and lead backend code quality reviews.
• Troubleshoot production issues, optimize performance, and ensure system stability.

Collaborate across teams (Product, DevOps, Frontend, Media Processing) to deliver high-performance features. Required Technical Skills Backend Engineering Expert-level TypeScript and experience building large-scale backend systems. Deep expertise with NestJS (guards, interceptors, pipes, modules, microservices). Strong hands-on experience with Hono for high-performance edge/serverless routing.

Strong knowledge of API architecture:

REST, WebSockets, GraphQL OpenAPI/Swagger documentation API versioning, rate-limits, pagination Security & Authentication

In-depth understanding of:

JWT, OAuth2, PKCE RBAC/ABAC authorization Input validation, sanitization CORS, secure headers, HTTPS/TLS OWASP Top 10 secure coding standards

• Ability to build secure-by-design backend systems in high-risk environments.
• Cloud Native & DevOps

Strong familiarity with AWS, specifically:

EKS, IAM, CloudFront, API Gateway/ALB Lambda, S3, ElastiCache, SQS/SNS

• Understand containerized architecture (Docker), K8s deployments, autoscaling, and observability.
• Experience creating high-availability, fault-tolerant, cost-optimized backend systems.
• Experience with Cloudflare is a plus.
• Data & Distributed Systems
• Strong MongoDB expertise: indexing, aggregations, schema design, sharding (advantage).

Experience with distributed caching and queueing systems:

Redis, RabbitMQ, Kafka, SQS

• Experience with media-heavy systems, file processing, and content delivery.