Senior Backend Engineer Tech Lead (3‑4 month contract) – Remote

About the role

FullStack is looking for a Senior Backend Engineer to act as Tech Lead on a 3‑4 month remote project for a U.S. client. You will join the client’s existing product team, collaborating daily with designers and engineers to deliver high‑performance backend solutions.

Key responsibilities

• Lead the technical direction and architecture of backend services, including Backend‑for‑Frontend (BFF) APIs.
• Design, develop, and maintain scalable micro‑services and event‑driven components for high‑traffic e‑commerce platforms.
• Integrate AI tools such as LangChain or LlamaIndex into product workflows.
• Work closely with external vendors and represent the engineering team in client‑facing meetings.
• Ensure continuous integration and delivery pipelines are robust and automated.

Required profile

• 6+ years of professional software engineering experience.
• 2+ years in a technical leadership role influencing architecture.
• Advanced English communication skills.
• Completed a four‑year college degree.

Required skills

• Node.js and TypeScript.
• AWS services: EC2, ECS, Lambda, ElastiCache, S3, CloudFront.
• MongoDB and backend deployment pipeline optimization.
• Salesforce OCAPI/API, CMS‑driven content management, mobile third‑party integrations.
• Design and security of scalable micro‑services and event‑driven architectures.
• AI development tools: LangChain, LlamaIndex.
• CI/CD, Agile/Scrum methodologies.