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Harnham

Junior Software Engineer

Hybrid

London, United kingdom

£ 55,000 /year

Junior

Full Time

10-11-2025

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Skills

Communication Python Java JavaScript C# SQL Data Visualization Data Engineering MySQL Problem-solving Databases SQL Server software testing Agile ETL Processes PostGres

Job Specifications

Full-Stack Developer

Hybrid London (3 days per week)

Up to £55,000 + Benefits

Are you a motivated developer who enjoys working across the full stack, learning new technologies, and building solutions that make a real impact? We’re working with Olus, a fast-growing digital consultancy helping law firms and corporate legal teams embrace technology and transform how they work — and they’re looking for a Full-Stack Developer to join their expanding team in central London.

This is an exciting opportunity to work on varied, high-impact projects in a collaborative environment where your ideas and growth truly matter.

Why this role?

Be part of a growing, innovative consultancy combining business change, data, and software expertise.
Work on a variety of projects — from building web apps to exploring low-code and automation platforms.
Hybrid working: 3 days per week in a premium central London office near Covent Garden, Soho, and Southbank; 2 days remote.
Join a small, close-knit team where your work has real visibility and purpose.

What you’ll be doing:

Supporting the development of applications and digital tools across the full stack.
Collaborating with consultants and stakeholders to translate business needs into technical solutions.
Helping to build scalable, secure applications using traditional frameworks and low-code tools (e.g. Microsoft Power Platform, Outsystems).
Writing, testing, and maintaining code while following agile best practices.
Contributing to proofs of concept and prototypes, exploring new technologies and ways of working.
Learning continuously and taking on more responsibility as you grow within the team.

What we’re looking for:

1+ years’ experience as a software developer (Ideally with exposure to both frontend and backend development.)
Strong experience in at least one of: Python, JavaScript, Java or C#.
Computer Science BSc.
Strong educational background, attending a Russell Group University.
Basic knowledge of relational databases (e.g. Postgres, MySQL, SQL Server).
Familiarity with building or consuming RESTful APIs.
Understanding of software testing principles, performance, and security best practices.
Strong communication and problem-solving skills, and a willingness to learn.
A degree in Computer Science, Engineering, or a related field.

Nice-to-haves:

Exposure to data engineering concepts such as ETL processes or integration pipelines.
Experience with low-code development (Power Platform, Outsystems, Mendix).
Interest in automation, data visualization, or digital transformation projects.

Package & Benefits:

Salary up to £55,000, depending on experience.
Hybrid working – 3 days per week in the London office, 2 from home.
Private medical insurance.

About the Company

Harnham provides specialist Data and AI recruitment and staffing services, along with bespoke training solutions, across multiple industry verticals, operating in the UK, the USA and EU - contact us today to discuss your requirements: info@harnham.com Our recruitment and talent teams cover all aspects of the data and AI pipeline, from collection to consumption, across multiple data roles and functions. Whether you need full-time staff, contract talent, specialized training, Data-qualified graduates, or C-suite executives... Know more