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Back-end Developer

New York, New York, United States💼 Full-time🗓 2026-10-06 → 2026-10-07

Core

Design and ship backend services that enforce coherence across recruiting workflows, integrating external job boards, applicant tracking systems, calendars, and notes tools to manage candidate searches from opening to offer signing.

Role type

Senior IC backend engineer (recruiting workflow & integrations) (via careerplan.io/jobs/fec73d65-c095-439c-b6f4-69607ca2abb5-back-end-developer-at-marathon-talent)

Builds

Agent runtime, workflow engine, and integrations for ATS, calendars, and document tools

Domain

SaaS recruiting software / distributed systems

Required skills

TypeScript, relational databases (Postgres), distributed systems (Temporal), API integrations, transaction management, identity management, partial failure handling, code refactoring

Preferred skills

Domain modeling for complex state transitions, debugging production issues, writing maintainable code

Technologies

TypeScript, Postgres, Temporal, Electron

Responsibilities

Design services to open searches from external jobs and advance candidates through stages; build agent runtime to plan and deliver writes based on recruiter messages; develop workflow engine to trigger tasks upon milestone recording; implement integrations with third-party APIs including polling and webhooks; refactor legacy code paths and fix production issues; collaborate with recruiting firms to validate product behavior