Junior Software Engineer (Backend + AI)

Newton Research is hiring a Junior Software Engineer (Backend + AI) for our AI-powered research and analysis platform used by enterprises to unlock insights from their data.

Position: Permanent, Full-time, Junior
Format: Hybrid (Greater Boston Area)
Compensation: $90,000 - $110,000

What you'll do:

• Build Django REST Framework API endpoints with complex data modeling.
• Extend AI agent capabilities — Add new tools to our LangGraph-based agents. Understand how retrieval-augmented generation works by working on our memory system.
• Write async task workers for document parsing and LLM inference.
• Implement comprehensive test coverage with pytest fixtures and API mocking.
• Build React components with TypeScript.
• Diagnose and fix AI output issues ("debug AI output").

You'll work on AI agent pipelines that call LLMs, execute tools, and reason over enterprise data.

Tech Stack:

• Backend: Python 3.13, Django 5.2, Django REST Framework, PostgreSQL, Redis
• AI/ML & Orchestration: OpenAI, Anthropic, and Google LLM APIs; LangChain + LangGraph agent orchestration; sentence-transformers for vector embeddings; RAGAS evaluation
• Data Science: NumPy, Pandas, Polars, scikit-learn, XGBoost, PyMC, Prophet, Plotly
• Frontend: React 19, TypeScript, Vite, Ant Design, TanStack Query, SCSS Modules
• Infrastructure: Docker, GitHub Actions, AWS (S3, ECR), MinIO, Sentry, RQ (Redis Queue)
• Testing: pytest (4,700+ tests), Vitest, Playwright E2E

Required Qualifications:

• Solid Python fundamentals and debugging ability.
• Web API knowledge (HTTP, JSON, request/response cycles).
• Git proficiency.
• Database experience (SQL, schema design).
• Genuine curiosity about AI/ML — you've used LLM APIs, built a RAG pipeline, fine-tuned a model.
• Ability to debug AI-generated code.

Nice-to-Have Skills:

• Django or Flask experience.
• React/TypeScript exposure.
• Docker familiarity.
• Vector databases, embeddings, LLM orchestration frameworks.
• Open-source contributions.
• Deployed projects.

Application Requirements:

1. GitHub or portfolio (deployed project, open-source, or documented experiment).
2. A note on what you've built with AI tools (emphasis on building, not just using).
3. Resume.

Visa sponsorship may be available — application form asks about future sponsorship needs.