Senior Elixir & TypeScript Engineer — Scalable Backend

Sapient Search; United States; On-site; USD 170,000 - 200,000; Full time

Job summary

Sapient Search is hiring a senior backend engineer to own core services in a fast-growing data startup. You will design domain-driven features, optimize queries, and build robust background workflows using Elixir and TypeScript.

You will contribute to Elixir and TypeScript services and help scale search and analytics across a high-traffic platform. Join a team that emphasizes engineering excellence, strong testing, and mentorship, with a compensation range of $170K–$200K base plus 10% bonus and

Qualifications

• 5+ years of backend engineering experience.
• 3+ years of production Elixir experience.
• Strong TypeScript expertise (Node.js services or full-stack).
• Solid command of TypeScript core features: generics, unions, utility types, async/await, Node.js event loop.
• Strong PostgreSQL expertise (query optimization, indexing, transactions, migrations).
• Experience with Ecto and Phoenix.
• Understanding of OTP principles (GenServer, Supervisor, Application).
• Experience with background job processing (Oban, Broadway, or similar).
• Familiarity with RESTful API design.
• Strong testing practices (ExUnit, property-based testing).

Responsibilities

• Design and implement features across domain-driven architecture (contexts, services, schemas).
• Build and optimize PostgreSQL queries, including read replicas for performance-critical paths.
• Develop background job workflows using Oban and Broadway/SQS pipelines.
• Integrate with external APIs and internal microservices.
• Contribute to Elixir & TypeScript services and tooling across Shared Services portfolio.
• Improve search functionality with OpenSearch.
• Implement caching strategies for high-traffic scenarios.
• Write comprehensive tests and maintain high code quality standards.
• Participate in code reviews and architectural discussions.
• Mentor junior engineers and contribute to team best practices.

Skills

Elixir

TypeScript

PostgreSQL

REST API

ExUnit

OTP

Education

Bachelor's degree in CS / IT or related

Tools

Oban Pro

Broadway

OpenSearch

AWS

OpenTelemetry

Docker Compose

GitHub Actions

libcluster

Job description

Sapient Search is hiring a senior backend engineer to own core services in a fast-growing data startup. You will design domain-driven features, optimize queries, and build robust background workflows using Elixir and TypeScript.

You will contribute to Elixir and TypeScript services and help scale search and analytics across a high-traffic platform. Join a team that emphasizes engineering excellence, strong testing, and mentorship, with a compensation range of $170K–$200K base plus 10% bonus and