Position: Associate Tech Specialist - Backend (Nest.js)

Experience: 6 to 8 years

Location- Pune (Hybrid)

:

We're looking for a Associate Technical specialist to help build and scale a production REST API. Our stack currently leans toward Ruby/Rails, but we're framework-agnostic when it comes to experience strong backgrounds in Django, Laravel, NestJS, or Spring are all welcome. What matters most is deep, senior-level expertise building and operating ORM-backed REST APIs in production.

Required Skills & Experience

- Senior-level backend experience building and maintaining an ORM-backed REST API using Rails, Django, Laravel, NestJS, or Spring
- PostgreSQL — schema design, query performance, and data integrity in production systems
- Background job processing — hands-on experience with Sidekiq, SQS, Celery, Bull, or equivalent, including designing for idempotency and secure retries
- Automated API testing — proficiency with RSpec, pytest, JUnit, or equivalent testing frameworks
- Authentication & authorization — practical experience with token-based and OAuth flows




- Search infrastructure — experience with OpenSearch or Elasticsearch, including query DSL, nested queries, and reindexing strategies
- External system integrations — experience integrating with an external system of record; Salesforce experience strongly preferred
- Willingness to work in Ruby/Rails — no prior Rails experience required, but candidates must be open to learning and working in it day-to-day

Nice to Have:

- Rails / Ruby experience
- Salesforce sync experience (SOQL, object mapping, polling, push-on-change patterns)
- PeopleSoft, SOAP, or other ERP integration experience
- AWS services (S3, SQS, RDS)
- Docker Compose
- Feature flag systems and progressive rollout practices

Person should be flexible to work between 7 PM to 10.30 PM IST as customer calls happen during this time period. Once in every 3 months person will need to stay back and attend Planning increment meeting which go beyond 12 midnight for 5 days.

📌 Senior Software Engineer (ROR & NestJs) (Pune)
🏢 harbinger-systems
📍 Pune