Software Developer

ShyftLabs

🇮🇳 India

On-site

3 weeks ago

AI
SendGrid
Python
REST API
FastAPI
Webhooks
PostgreSQL
Alembic
AWS
SQS
Celery
AWS S3
SQLAlchemy
Pydantic
OAuth
pytest
React.js
pgvector
AWS Bedrock
RabbitMQ

3 weeks ago

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Role OverviewSimfluent's platform automates the full recruitment lifecycle across five AI agents, a 22-stage candidate pipeline, and integrations with Lever ATS, SendGrid, and multiple job boards. As a Software Developer on the Platform team, you will build and own features across the backend API, async worker infrastructure, and third-party integrations that keep the platform running for enterprise tenants.Four years of experience means you have shipped real features in production, you understand why tests matter, and you can design a data model before you open your code editor. You work independently on well-scoped problems, raise quality concerns early, and know when to ask for help before a decision becomes expensive to reverse. This is a backend-first role with a strong Python focus.

Responsibilities

API Layer: Build and maintain REST API endpoints using FastAPI — recruiter pipeline actions, candidate management, job configuration, and third-party integration webhooks.
Data Modelling: Design and implement PostgreSQL data models — schema design, indexing, query optimisation via EXPLAIN ANALYZE, and Alembic migration management for new features.
Multi-Tenancy: Build and maintain multi-tenant data access patterns — every query correctly scoped by tenant_id, no cross-tenant data leakage, new features inherit the isolation model from day one.
Async Workers: Implement async worker tasks using AWS SQS and Celery — task design, retry logic, idempotency, and dead-letter queue handling for pipeline automation flows.
Integrations: Build and extend third-party integrations — Lever ATS webhooks, SendGrid outbound and inbound parse, IMAP polling for the job-watch inbox, and AWS S3 for document storage.
Testing: Write comprehensive test coverage — unit tests, integration tests, and async/webhook handler tests as a standard part of your workflow.
Code Reviews: Participate in architecture discussions, code reviews, and technical documentation — raising quality concerns clearly and constructively.
On-call: Contribute to on-call rotation — diagnose and resolve production incidents, write runbooks, and conduct post-mortems.

Requirements

Python
FastAPI
asyncio
SQLAlchemy
Pydantic
PostgreSQL
Database Schema Design
Database Indexing
EXPLAIN ANALYZE
Alembic
Multi-tenant Architecture
AWS SQS
Celery
Message Queue Systems
REST API Integration
OAuth
Webhooks
pytest
Async Testing Patterns
Systems Design

Preferred Skills

React
pgvector
Vector Databases
AWS Bedrock
LLM Integration
Multi-tenant SaaS Architecture
New Skil

Qualifications

4 years of Python backend engineering experience in production environments
Production-grade service development experience (not scripts)
Experience with async programming using asyncio
Strong database design and optimization skills
Experience with async task systems (SQS, Celery, or RabbitMQ)
Experience building third-party API integrations
Strong testing discipline with comprehensive test coverage
Systems thinking approach to software design
Understanding of failure modes, edge cases, and observability

Simfluent is an equal opportunity employer. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status.

Software Developer · ShyftLabs

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