Senior Developer

Menzies LLP; Staines-upon-Thames; On-site; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Career Development

Private medical cover

Pension matching

Flexible working

Job summary

Menzies LLP is seeking a Senior Developer to join our IT & Innovation team. This role can be based from any Menzies office, including Heathrow, and focuses on designing, building and maintaining internal apps, integrations and automations that empower staff and leverage data and AI.

You will work across the firm to deliver scalable solutions, secure integrations and improved processes, with emphasis on collaboration, quality, and modern development practices.

Qualifications

• Degree or equivalent practical experience in Computer Science, Software Engineering, Information Systems or related field.
• Certifications in Microsoft, Google Cloud, software development, integration or automation are a bonus though not essential.

Responsibilities

• Design and deliver innovative internal applications, integrations and automations from concept to testing and deployment.
• Build scalable applications, APIs, scripts and automated workflows using Python, TypeScript, SQL and cloud platforms.
• Create secure, reliable integrations between platforms using APIs, web services and databases.
• Collaborate with teams to understand challenges and deliver practical technology solutions with impact.
• Leverage Google Cloud Platform (GCP), BigQuery and AI capabilities to enhance decision making.
• Maintain high-quality, well-documented solutions with Git/GitHub, CI/CD, monitoring and docs.

Skills

Python

TypeScript

SQL

C#

Java

APIs

Education

Bachelor's degree in Computer Science or related field

Tools

Git/GitHub

Google Cloud Platform (GCP)

Azure

Terraform

CI/CD pipelines

Job description

Senior Developer

Department: IT & Innovation

Employment Type: Full Time

Location: Heathrow Office

Description

Menzies is an equal opportunities employer which means that we recruit, employ, train, pay, and promote regardless of race, religion, national origin, gender, sexual orientation, disability or age. We are building a first‑class team and, to do so, we know that we need a diverse mix of talented people doing their best work.

If you’re ready to make an impact, lead with purpose, and work in a place where your voice truly matters, keep reading!

We have a great opportunity for a Senior Developer to join our team and can be based from any of our Menzies offices.

Join us in shaping the future of technology at Menzies by designing, building and maintaining innovative internal applications, integrations and automations that empower our teams to work smarter, streamline processes, and unlock the full potential of data and AI across the business.

Why Menzies?

At Menzies, our culture is our cornerstone. We blend technical excellence with genuine care for our people and clients. With over 1100 colleagues in the UK, we’ve built a culture based on shared values and mutual respect. Here’s why you’ll love working with us:

• People First: Our work‑life balance isn’t just talk. From agile working to generous leave, we create space for what matters to you and this is why we were recognised as one of the Best Places to Work 2024, 2025 and now also 2026
• Work with Inspiring Clients: You’ll be working with a range of clients so no two days will be the same.
• Collaborate Across The Firm: Working with various people across the firm to raise the profile of Menzies Academy
• Innovate with Purpose: We’re always looking for better ways to work—leveraging tech, simplifying complexities, and delivering value.
• Empathy at Our Core: We don’t just serve our clients; we build trusted relationships that stand the test of time.

Key Responsibilities

Here’s what you’ll be doing:

• Design and deliver innovative solutions – Lead the development of internal applications, integrations and automations from initial concept and prototyping through to testing, deployment and ongoing support.
• Build technology that makes a difference – Create scalable applications, APIs, scripts and automated workflows using modern technologies such as Python, TypeScript, C#, SQL and cloud‑based platforms to help our people work smarter.
• Connect our systems – Develop secure, reliable integrations between Menzies' platforms and third‑party applications using APIs, web services, databases and automation tools to create seamless business processes.
• Partner with the business – Work closely with teams across the firm to understand challenges, identify opportunities for improvement and deliver practical technology solutions that have a real impact on the way we work.
• Unlock the power of data and AI – Build intelligent tools that make the most of our Google Cloud Platform (GCP), BigQuery and AI capabilities, helping colleagues make better decisions and deliver greater value to clients.
• Champion engineering excellence – Develop high‑quality, well‑tested solutions using modern software engineering practices, including Git/GitHub, code reviews, CI/CD, monitoring and technical documentation.
• Drive continuous improvement – Enhance and optimise existing applications, automations and integrations, reducing manual effort, increasing reliability and improving the user experience.
• Collaborate across technology teams – Work alongside data engineers and analysts to ensure applications use data effectively while complementing our wider data platform.
• Build security into everything – Ensure every solution is designed with GDPR, information security, authentication and data protection at its core.
• Help shape our Innovation Team – Share your expertise, mentor colleagues and contribute to developing best practices as our growing Innovation Team continues to evolve.

Skills, Knowledge & Expertise

What We’re Looking For: We're looking for someone who's passionate about building technology that solves real business challenges. You'll enjoy working with a variety of stakeholders, embracing new technologies, and creating solutions that make a genuine impact across the firm.

Qualifications

• A degree, apprenticeship or equivalent practical experience in Computer Science, Software Engineering, Information Systems or a related field.
• Microsoft, Google Cloud, software development, integration or automation certifications are a bonus, but they're by no means essential.

Technical Skills & Knowledge

• Strong programming skills in Python and TypeScript, with experience of SQL and cloud‑based development. Experience with C#, Java or other programming languages would be an advantage.
• A solid understanding of APIs, authentication, web services, data formats and relational databases.
• Experience developing internal applications, automations or integrations that support day‑to‑day business operations.
• Familiarity with modern software development practices, including Git/GitHub, testing, code reviews, documentation and deployment.
• Experience with integration platforms, automation tools, low‑code solutions and cloud technologies. Exposure to Google Cloud Platform (GCP), Azure or Terraform would be beneficial but isn't essential.
• A good understanding of GDPR, cyber security, secure development, access management and data protection.
• The ability to balance rapid innovation with building reliable, scalable solutions that stand the test of time.

What You’ll Bring

• A natural curiosity and passion for solving complex problems.
• Strong communication skills, with the ability to translate technical concepts into practical business solutions.
• A collaborative approach and the confidence to work with colleagues across different teams and disciplines.
• Pride in producing high‑quality, well‑documented and reliable solutions.
• A commercial mindset, always looking for opportunities to deliver value through technology.
• A willingness to share knowledge, learn from others and contribute to a growing innovation team.

Experience

• Around 3–5 years' experience in software development, integration engineering, automation engineering or a similar technical role.
• A proven track record of delivering software, applications or automation solutions that are used by business teams in a live environment.
• Experience within professional services, finance, accounting, legal, tax or audit would be advantageous, but we're equally keen to hear from candidates with transferable experience from other industries.

Travel

• Occasional travel to other Menzies offices for workshops, discovery sessions, project delivery and team collaboration.

Job Benefits

Why Join Us?

At Menzies, we know that success starts with our people. That’s why we offer:

• Career Development: From learning opportunities to career coaching, we’ll help you achieve your goals.
• Competitive Benefits: Private medical cover, pension matching, and enhanced parental leave, to name a few.
• Flexibility That Works for You: Agile working is embedded in our culture.
• Perks That Go Beyond: From volunteering days to wellbeing initiatives, we care about your whole self.

To find out more about our benefits please read here