Senior Software Engineer

Harnham - Data & Analytics Recruitment; London; Remote; GBP 60,000 - 80,000; Full time

Job summary

A fast-growing RegTech startup is seeking Full Stack Engineers to join their dynamic team. You will design and build scalable components for two innovative products focused on AML decision-making and report generation. The ideal candidate has 5-10 years of experience, is comfortable in both backend and frontend development, and has a strong ownership mindset. This is a unique opportunity to impact product development in a supportive startup environment.

Benefits

Equity included

Work remotely

Qualifications

• 5-10 years' experience delivering production software in fast-paced environments.
• Comfortable working across backend and frontend, slight backend lean preferred.
• Strong ownership mindset—able to ship features independently.

Responsibilities

• Design and build scalable backend and frontend components for core products.
• Help establish technical standards and best practices across the engineering team.
• Drive feature development from concept to deployment.

Skills

Production software delivery

Backend and frontend development

Ownership mindset

Managing multiple workstreams

Product-focused engineering

Engineering best practices

Tools

Python

JavaScript / TypeScript

SQL

AWS

Job description

Overview

Our client is a fast-growing RegTech startup using AI to transform how financial institutions approach AML and compliance workflows. They’re hiring Full Stack Engineers to join a compact, fast-moving team working on two flagship products—an intelligent API for AML decision-making and an AI-driven report generation platform simulating the work of a financial crime analyst.

The company is venture-backed, with an active client base across fintechs and ambitions to break into large-scale enterprise. This is a unique opportunity to have end-to-end impact—designing, building, and deploying features in an environment where engineering best practices are respected and expected.

Key Responsibilities

• Design and build scalable backend and frontend components for core products
• Help establish technical standards, best practices, and delivery processes across the engineering team
• Drive feature development from concept to deployment, working autonomously or in small teams
• Collaborate with engineering leadership on technical direction and architectural decisions
• Work on complex problems involving data aggregation, report generation, and AI agent integration
• Contribute to product evolution based on customer feedback and internal roadmap

Ideal Candidate

• 5-10 years\' experience delivering production software in fast-paced environments
• Comfortable working across backend and frontend (slight backend lean preferred)
• Strong ownership mindset—able to ship features independently (build + deploy)
• Experience managing multiple workstreams in low-management settings
• Product-focused engineer who thrives in flat, startup-style team structures
• Good grasp of engineering best practices, code quality, and system design

Tech Stack

• Python
• JavaScript / TypeScript
• SQL
• AWS (Cloud Infrastructure)

Interview Process

• Technical Discussion (30-60 mins)
• Collaborative Co-working Session (60-90 mins) - Solve a real-world problem together via screen share

Both stages are conducted remotely.

Additional Details

• Urgent hire
• Equity included
• Sponsorship not available at this time