R&D Software Engineer – Polyant & PlugSync (Mid-level)

Stack

Responsibilities

• ▹Take defined problems from investigation through implementation, testing and documentation
• ▹Build and improve scoped features, integrations and internal tools across Polyant and PlugSync
• ▹Investigate technical questions, build small prototypes and evaluate their usefulness before expanding them
• ▹Contribute to AI agent capabilities and workflows in Polyant, including LLM APIs, tool use, retrieval and evaluation
• ▹Develop and maintain API integrations and synchronization workflows in PlugSync, considering authentication, data mapping, retries, duplicate processing and error recovery
• ▹Turn validated prototypes into maintainable software with tests, documentation, observability and a clear deployment path
• ▹Use AI coding tools as part of everyday engineering, while checking correctness, security and maintainability
• ▹Debug defects and operational issues in your areas and communicate what you find

Requirements

• ▹Professional software development experience sufficient to independently deliver a scoped feature through implementation, review and release (around 2–5 years as a guide)
• ▹Good working knowledge of TypeScript/Node.js or Python, and willingness to become productive in the other when needed
• ▹Solid fundamentals in software design, databases, HTTP and APIs
• ▹Experience integrating external APIs and handling errors and data consistency beyond the happy path
• ▹Practical use of Git, automated tests and code review, with an understanding of CI/CD and deployment
• ▹Hands-on exposure to LLM APIs

Soft skills

About the company

Exelab builds custom, AI-powered solutions around real business needs; its R&D team explores new technical approaches, develops reusable software, and turns useful experiments into capabilities the wider company can use.