Senior Backend Engineer - Healthtech AI Python AWS

We are looking for a Senior Backend Developer (Python AWS) to help build a healthcare platform. You will own backend services end to end, and work closely with the CTOThis is a hands-on senior backend role spanning service development, AWS platform foundations, third-party integrations, PostgreSQL data access, CI/CD, infrastructure as code, observability and production readiness. You will design and build secure, maintainable APIs and services, work closely with the product team to turn requirements into well-designed software, and set the standards that junior developers follow.

We expect you to use AI coding tools to accelerate implementation, testing, documentation, infrastructure work and code review, while keeping clear human accountability for correctness, security and reliability. RoleDesign and build backend services in Python and FastAPI: API endpoints, service logic, validation, business workflows and data access patternsEnsure APIs are documented through OpenAPI/Swagger and are easy for frontend developers and AI coding tools to consumeSupport the design and implementation of the operational PostgreSQL data store, including schema design, migrations and query optimisationBuild secure, reliable third-party integration patterns using AWS services such as API Gateway, Lambda, SQS and S3Support AWS environments using Infrastructure as Code, containerised workloads and deployment automationDesign and maintain CI/CD pipelines for build, test, security scanning, deployment and rollbackImplement logging, metrics, tracing and alerting using tools such as CloudWatch and X-Ray Experience Python, with FastAPI or an equivalent modern async API frameworkStrong REST API design, OpenAPI/Swagger and service-based architecturePostgreSQL: SQL, schema design, migrations and query optimisation, with comfort writing and tuning queries directlyStrong AWS experience building and operating services - for example API Gateway, Lambda, SQS, S3, RDS, ECS Fargate, CloudWatch, X-Ray, Cognito, KMS and Secrets ManagerInfrastructure as Code (Terraform / CloudFormation / CDK); Terraform experience preferredContainerised workloads (Docker / ECS Fargate)Git-based workflows, pull requests, code review and CI/CD pipelinesAutomated testing across unit, API and integration layersExperience migrating from legacy platforms to modern service-based architectureExperience with AI-assisted tools such as Cursor, GitHub Copilot or ClaudeStrong desire to work in a fast paced startup environment BONUS: Experience in healthcare and or Digital Health