Full-Stack / Platform Engineer at Handshaik

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Job Title: Full-Stack / Platform Engineer

Salary: £90k + Equity

Company Description: Handshaik - AI-native company intelligence platform backed by BigChange founder Martin Port.

Job Description:
Join a high-growth startup as a foundational engineer building an AI-native platform for M&A and private equity. You will own the entire technical lifecycle—from architecting Python/FastAPI backends and React frontends to managing AWS infrastructure and integrating LLMs via Bedrock. This role offers direct influence over the company’s technical future.

Location: London, UK

Why this role is remarkable:

- Significant ownership as a foundational hire, working directly with the CTO and founders to define engineering standards and product roadmap.

- High-performance technical stack involving AI-driven search, vector databases (pgvector), and agent-based workflows at the frontier of dealmaking technology.

- Strong commercial backing from the BigChange ecosystem and Cambridge AI researchers, moving rapidly toward product-market fit with active early customers.

What you will do:

- Design, build, and operate a production SaaS platform using Python (FastAPI), React, and PostgreSQL, ensuring high performance and security.

- Architect and scale cloud infrastructure on AWS using Terraform, ECS, and Lambda while maintaining multi-tenant security and ISO 27001 standards.

- Develop and optimize hybrid search capabilities and data pipelines, integrating LLMs to automate complex research tasks for dealmakers.

The ideal candidate:

- 7+ years of experience building and shipping production-grade systems in startup or small-company environments with a strong ...