Senior Backend Engineer (Contract)

Working at Tech Holding isn't just a job, it's an opportunity to be a part of something bigger. We are a full-service consulting firm that was founded on the premise of delivering predictable outcomes and high-quality solutions to our clients.  Our founders and team members have industry experience and have held senior positions in a wide variety of companies – from emerging startups to large Fortune 50 firms – and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability.

We are seeking a Senior Backend Engineer to maintain and enhance backend services built on TypeScript and Fastify. You will be responsible for ensuring API reliability, optimizing data layers, and collaborating closely with the frontend and DevOps teams.

Key Responsibilities:

• Design, build, and maintain backend services using TypeScript and Fastify
• Develop and optimize APIs consumed by web and mobile clients
• Manage and tune Elasticsearch for personalization and caching use cases
• Work with Redis / Valkey for key-value caching and session management
• Collaborate with DevOps to ensure services are properly containerized and deployed on GCP (Kubernetes / Cloud Run)
• Write API specifications, comprehensive tests and maintain high code quality standards
• Mentor junior backend engineers and contribute to architectural decisions

• 6+ years of professional backend development experience
• Strong proficiency with TypeScript and Node.js in production environments
• Hands-on experience with Fastify or similar Node.js frameworks (Express, Hapi)
• Solid experience with Elasticsearch for search, personalization, or analytics
• Working knowledge of Redis or Valkey for caching and data store use cases
• Familiarity with containerized deployments on GCP (Kubernetes, Cloud Run)

• Experience with Sanity or other headless CMS backends
• Familiarity with event-driven architectures, SSE or message queues
• Experience with infrastructure-as-code tools (Terraform, Pulumi)