Senior Finance Systems Developer

Mitchell Adam Ltd; Birmingham; Hybrid; GBP 70,000 - 95,000; Full time

Job summary

Mitchell Adam Ltd. in Birmingham is recruiting a Senior Finance Systems Developer to own and evolve our finance applications.

You will lead development across bespoke systems, integrations and AI-driven solutions, taking projects from design through to testing and deployment while staying hands-on. You will mentor a small technical team, drive best practices, resolve complex issues, and engage with clients to showcase solutions.

Qualifications

• Strong Python development experience; Flask experience preferred.
• Advanced SQL/T‑SQL with complex queries, stored procedures and performance tuning.
• Experience with REST APIs, JSON integrations, HTML/CSS and full development lifecycle.
• Previous team leadership or mentoring experience with strong analytical problem-solving skills.

Responsibilities

• Lead development across bespoke applications, integrations and AI-driven solutions, guiding projects from design to deployment.
• Mentor and develop a small technical team and drive best practices.
• Serve as the main technical escalation point for complex system issues and ensure reliability of applications.
• Engage with clients, tying technical delivery to business outcomes and presenting solutions.

Skills

Python

Leadership

C#/.NET

SQL/T-SQL

REST APIs

JSON integrations

HTML/CSS

Full development lifecycle

Fluent English communication

Tools

Flask

REST APIs

JSON

HTML/CSS

C#/.NET

SQL/T‑SQL

Job description

Overview

Mitchell Adam are partnering with an established Professional Services business to recruit a Senior Finance Systems Developer. This is a senior technical role combining hands-on development, team leadership and the opportunity to work with emerging technologies across a varied finance systems environment.

You'll lead development across bespoke applications, integrations and AI-driven solutions, taking projects through the full lifecycle from design and development to testing and deployment. Working with Python, SQL, C#/.NET and REST APIs, you'll also act as the main technical escalation point for complex system issues and help ensure applications remain reliable and effective.

Alongside your technical responsibilities, you'll mentor and develop other members of the team, helping shape best practice and improve overall capability. With opportunities to explore AI integration and develop your knowledge of modern finance systems, this is an excellent step for an experienced developer looking to combine technical delivery with greater ownership and influence. You will be in a client facing area of the business, tying in your technical skillset with the opportunity to present.

Skills Needed

• Strong Python development experience, ideally using Flask, alongside C#/.NET.

• Advanced SQL/T-SQL skills, including complex queries, stored procedures and performance tuning.

• Experience with REST APIs, JSON integrations, HTML/CSS and the full development lifecycle.

• Previous team leadership or mentoring experience, supported by strong analytical and problem-solving skills.

What You Will Receive

• A senior position with ownership of business-critical applications and integrations.

• The opportunity to lead and mentor a small technical team while remaining hands-on.

• Exposure to AI, LLM integration and other developing technologies.

• Very hyrbid work, with three days from home.

Summary

This role offers the chance to combine hands-on engineering with technical leadership, shape important systems and explore new technologies.