Founding Backend Engineer for Fintech API Platform

Mekion Consulting; Greater London; On-site; GBP 65,000 - 85,000; Full time

Job summary

A regulated fintech company based in Greater London is seeking a Founding Engineer to design and build the core platform. This high-impact role involves owning production systems and shaping technical direction. Candidates should have strong experience with Node.js and PostgreSQL. The role provides an opportunity for significant responsibility and future leadership as the company evolves. Ideal for someone looking to grow within a dynamic, early-stage environment.

Qualifications

• Strong commercial experience with Node.js backend development.
• Solid experience with PostgreSQL, including schema design and performance tuning.
• Proven experience building and maintaining production APIs.

Responsibilities

• Design, build, and maintain backend services using Node.js.
• Own production systems: monitoring, incident response, and root-cause analysis.
• Implement secure authentication and authorization patterns.

Skills

Node.js backend development

PostgreSQL

Production API management

CI/CD with GitHub

Incident response

Data security and protection

Comfortable with regulated environments

Tools

GitHub

GitHub Actions

Job description

A regulated fintech company based in Greater London is seeking a Founding Engineer to design and build the core platform. This high-impact role involves owning production systems and shaping technical direction. Candidates should have strong experience with Node.js and PostgreSQL. The role provides an opportunity for significant responsibility and future leadership as the company evolves. Ideal for someone looking to grow within a dynamic, early-stage environment.