Senior Platform Engineer

Job Description

What we're looking for

We’re looking for a Senior Platform Engineer to help design, build and evolve the internal platforms and shared engineering tools that support software delivery across AJ Bell Technology Services.

This role is focused on improving Developer Experience and enabling product teams to deliver high-quality software quickly, safely and at scale and increasing the pace of change across engineering. You’ll work across platform capabilities, shared tooling and engineering enablement, combining strong technical expertise with a collaborative, practical approach.

As a senior member of the team, you’ll contribute to the design, development and ongoing improvement of platform solutions, provide technical guidance to engineering teams, support adoption of platform capabilities, and mentor other Platform Engineers.

What you’ll be doing

You’ll play a key role in maintaining and evolving our core engineering platforms, including:

• Backstage and internal developer portal capabilities
• Engineering data platforms, including ELT workflows, DBT and SQL-based data pipelines
• Observability and monitoring Grafana platforms
• Internal automation and workflow platforms that support software delivery and engineering operations

You’ll also contribute to broader platform engineering initiatives, including:

• Streamlining software delivery workflows and engineering practices
• Supporting integration across internal platforms and tooling
• Improving the developer experience through self-service tooling, templates and golden paths
• Using engineering insights and data to drive continuous improvement
• Providing technical guidance and support to engineering teams
• Driving adoption of modern platform tools and practices
• Mentoring Platform Engineers and contributing to technical leadership within the team

You should bring

• Strong experience designing and operating internal platforms and shared engineering tooling
• Experience improving developer workflows, developer experience and software delivery practices
• Solid understanding of modern software engineering, platform patterns and delivery workflows
• Hands-on experience with TypeScript or Go
• Experience building and supporting Internal Developer Platforms
• Experience working with data platforms, ELT workflows, DBT and SQL-based data pipelines
• Strong understanding of cloud platforms, containerisation and infrastructure as code
• Experience building self-service tooling, templates and developer enablement capabilities
• Experience with monitoring and observability
• Good understanding of security best practices in software delivery and platform design
• Strong problem-solving, communication and collaboration skills
• Ability to provide technical leadership, mentor others and influence adoption of engineering best practices

About AJ Bell

AJ Bell is one of the UK’s fastest-growing investment platform businesses, providing award-winning solutions for everyone, from professional financial advisers to first-time investors.

Today, over 723,000 customers trust us to manage more than £108.7 billion of assets. By continually striving to make investing simpler and more accessible, we’re helping more people take control of their financial futures.

We’re proud to be recognised as one of the UK’s Best 100 Companies to Work For for six consecutive years, and a Great Place to Work® in 2025 and 2026 a reflection of our supportive and collaborative culture.

What we offer

• 26 days holiday, increasing with service + buy/sell scheme + bank holidays
• 7% Pension with matched contributions
• Discretionary bonus scheme
• Share schemes (including free shares and BAYE)
• Health Cash Plan and discounted private healthcare
• Free onsite gym
• Enhanced family leave (subject to qualifying criteria)
• Travel and bike loan schemes
• Employee Assistance Programme

Life at AJ Bell

• Regular social events including summer and Christmas parties
• Learning and development opportunities tailored to you
• Casual dress code
• Friendly, supportive team environment

Our ways of working

We offer hybrid working, with a minimum of 50% of your working time per month spent in the office.

For new starters, there’s an initial period of full-time office working to help you settle in and build relationships.

Inclusion & diversity

We’re committed to creating an inclusive environment where everyone feels respected and able to be themselves at work.

We welcome applications from all backgrounds and make hiring decisions based on skills, experience and potential.