Senior Backend Engineer – TypeScript, Nest.js, AWS
Employment Information
Report this job
Job expired or something wrong with this job?
Job Description
Senior Backend Engineer building a Nest.js/TypeScript multi-tenant policy gateway for a US insurance carrier. Delivering AWS integrations, policy mapping, observability, and tenant isolation.
Responsibilities:
- Design and build a greenfield multi-tenant policy gateway as a Nest.js/TypeScript service on the client's internal framework and AWS
- Propose infrastructure changes as Terraform PRs for the client's DevOps team to apply
- Implement webhook contracts with HMAC authentication, Vault-managed secrets, IP allowlisting, ISO-8601 date handling, and policy-version-at-date-of-loss selection
- Build the tenant router and registry with composite resolution and defined failure behavior
- Build source adapters with per-source authentication, timeouts, retries with backoff, and circuit breaking
- Build tenant-specific SFTP landing zones, file validation and quarantine, and idempotent PostgreSQL policy-store loads with snapshot retention and freshness monitoring
- Define the canonical policy model and shared canonical-to-target mapper
- Lead the first partner's field-mapping review with the client's claims expert
- Deliver per-tenant observability, including structured logs, metrics, Grafana dashboards, freshness alerts, and error-rate alerts
- Create an onboarding runbook for adding additional tenants
- Write isolation negative tests as a release gate
- Run failure-mode drills and end-to-end walkthroughs in the client's sandbox
- Support the client's security review and launch readiness
- Collaborate directly with client engineers and domain experts across time zones, largely asynchronously
Requirements:
- 5+ years of backend engineering experience with strong, recent TypeScript in production
- Experience with Nest.js or a comparable dependency-injection-based Node framework
- Experience building integration services or API gateways, including webhooks, signature-based authentication, retries, idempotency, circuit breakers, and third-party API adapters
- PostgreSQL and relational data modelling experience; comfortable designing schemas and writing migrations
- Experience with multi-tenant systems or another domain where data isolation is a hard requirement
- Hands-on AWS experience with ECS/EKS or Lambda, SQS, S3, IAM, Secrets Manager or Vault
- Ability to read and propose Terraform, even if another person applies it
- AI-native way of working using tools such as Claude Code and Codex while reviewing every shipped line
- Ability to scope ambiguous requests, write concise design notes, ask clients the right questions early, and deliver without heavy oversight
- Fluent English and clear, proactive communication with technical and non-technical stakeholders
- Some availability in PT timezone, not more than once a week
- Insurance domain exposure, batch or file-based integrations, regulated-data experience, Grafana/OpenTelemetry-style observability, and prior consulting or client-facing delivery are nice to have
Benefits:
- Fully paid licenses for Cursor, Claude Pro, etc.
- Remote-first work arrangement
- No filler meetings, no Jira bloat, and no micromanagement
- Total autonomy over the workflow
- Direct work with the CEO, CTO, VPs, and client leadership
- Continuous growth and a strong knowledge-sharing culture
Similar Jobs
Backend Revenue Cycle Manager
Backend Revenue Cycle Manager leading payer governance, high-dollar denial escalations, and revenue integrity operations. Supervising analysts and coordinating claims inventory across Ascension’s multi-state healthcare system.
Software Engineer – Go
Go engineer creating challenging repository-exploration tasks for Mercor’s AI-agent training datasets. Investigating production codebases, defining rubrics, and validating submissions remotely.
Software Engineer, Go
Go engineer creating difficult repository-exploration tasks for Mercor’s AI agents. Investigating production codebases, runtime behavior, rubrics, and validation workflows.
Software Engineer, Go
Go engineer creating difficult repository-exploration tasks for Mercor’s AI-agent training datasets. Investigating production codebases, designing rubrics, and validating runtime reasoning tasks.
Software Engineer, Python
Python engineer creating runtime-based codebase Q&A tasks for Mercor’s AI agent training datasets. Exploring production repositories, refining rubrics, and validating tasks remotely.
Software Engineer, Python
Python engineers building difficult repository-exploration tasks for Mercor’s AI training datasets. Investigating production codebases, validating rubrics, and documenting runtime reasoning.
Senior Software Engineer, GO
Senior Go engineer designing distributed backend services for PrizePicks, a leading daily fantasy sports platform. Owning complex features, reliability, architecture, and engineering mentorship.
Senior Backend Engineer II, AI Native, Pets & Things Experiences
Senior backend engineer building AI-native, high-throughput device services for Life360’s family safety platform. Supporting telemetry, connectivity, and pet experiences across US and Canadian remote teams.
Principal Database Engineer
Principal Database Engineer leading secure, scalable cloud database platforms for NextGen Healthcare’s healthcare applications. Driving SQL Server modernization, automation, reliability, and AWS/GCP migrations.
Senior Cell Therapy Site Manager - Region: Würzburg, Erlangen, Jena, Dresden
BMS field manager driving CAR T commercialization across German treatment centers. Building account strategies, KOL relationships and peer-to-peer engagement across Würzburg, Erlangen, Jena and Dresden.
Full-Stack Engineer – Backend Focus, AI
Full-Stack Engineer owning backend systems and rebuilding web software for Freedom Motors USA, a wheelchair-accessible vehicle manufacturer and retailer. Developing APIs, integrations, databases, and customer tools.
Backend Engineer, IAM
Backend Engineer building scalable identity, authentication, and authorization systems for Reddit’s online communities. Designing backend services and IAM architecture with cross-functional engineering teams.
AI Platform Architect
AI Platform Engineer building secure, scalable Claude-powered enterprise AI platforms. Enabling RAG, agentic workflows, ServiceNow integrations, and governed production deployments for enterprise clients.
Senior Platform Architect
Platform Architect building Wizdaa’s scalable Kubernetes, Terraform, and AI infrastructure. Operating reliable cloud platforms, GitOps deployments, and production LLM systems across LATAM.
Fullstack Engineer – Java, Kotlin, JavaScript
Fullstack Engineer developing automotive marketplace experiences for a major European e-commerce platform. Building Java/Kotlin backend services and React/TypeScript frontend features.
Senior Java Engineer, Python
Senior Java Engineer building Java and Python microservices on AWS for AI-powered systems. Designing APIs, guiding architecture, and mentoring engineers in a fully remote EU role.
Senior Java Engineer, Python
Senior Java Engineer building Java and Python microservices for Salve.Inno Consulting’s international AI-powered systems. Designing AWS cloud-native architecture and guiding technical delivery.
Senior Java Engineer, Python
Senior Java Engineer building Java and Python cloud-native backend services for Salve.Inno Consulting’s international clients. Designing microservices, APIs, and AWS infrastructure while guiding technical decisions.
Senior Java Engineer, Python
Senior Java Engineer building Java and Python microservices with AWS, Kubernetes, and Docker. Providing technical leadership for cloud-native systems used internationally.
Senior Java Engineer, Python
Senior Java Engineer building Java and Python microservices for Salve.Inno Consulting’s international clients. Designing AWS cloud-native systems and guiding architecture, reliability, and engineering standards.