Senior Fullstack Engineer, Tussell
More information about location
2-3 days a week in office (Shoreditch, London)
Data insights into the public sector
Be an early applicant
Data insights into the public sector
1-20 employees
Be an early applicant
More information about location
2-3 days a week in office (Shoreditch, London)
1-20 employees
Company mission
To make it as easy as possible for companies to do business with the government – in the UK and around the world.
Role
Who you are
- The ideal candidate will have strong experience with any or all of Ruby on Rails, Python, PostgreSQL, and React, along with a track record of working with live, data-heavy applications
- We’re looking for a versatile self-starting engineer who can work across our entire technology stack, from backend services to user-facing applications. Someone who can set standards of good practice, not just follow them
- Someone who can add to our technical know-how
- Experienced engineer: You’ve spent 5+ years in full-stack development, ideally with Ruby on Rails, Python, PostgreSQL, and React — and are comfortable shipping and maintaining live, data-rich products
- Technical leadership capability: You’ve made key technical decisions and been a respected engineering voice in a business. You’re confident in influencing the technical direction where needed
- Player-coach mindset: You enjoy writing code, solving hard problems, and helping others improve — you're equally motivated by hands-on work and team success
- Process-oriented: You know how to improve and standardise engineering practice in line with what’s needed to ensure stability, quality, and speed
- Commercially-minded: You understand how engineering choices affect cost, product delivery, and customer outcomes — and you prioritise accordingly
- Real-world experience: You’ve worked on live systems, dealt with bugs, responded to users, and made decisions under pressure
- Excited by the challenge: You’re energised by the opportunity to be an influential voice, help replace an outsourced team, build from within, and help set the direction of a growing company
- Our ideal candidate may not exist. Please consider applying if you think you can contribute in this role despite not having experience in every area we have identified - we’re looking for a Tussell person first and foremost, and skill gaps can be addressed with personal development plans
What the job involves
- This is an influential role, offering the successful candidate the chance to join a new team at a pivotal time and have a significant impact on a growing business
- You will take part in transitioning our external development model to an in-house team during the first half of 2026, whilst setting engineering best practices
- The role also offers the opportunity to take part in hiring and growing the team
- There is a huge opportunity to help us unlock the full potential of our market-leading data
- We’re facing exciting technical challenges - from re-architecting our data pipeline, to enabling users to query and interact with complex datasets intuitively, and scaling how we acquire entirely new swathes of data
- We also believe Tussell is uniquely positioned to apply machine learning and algorithmic approaches in ways that genuinely add value — surfacing insights, improving search and discovery, and making market intelligence dramatically more accessible
- As a senior hire, you will collaborate closely with the product team and other key stakeholders to ensure that technical decisions support business objectives, user needs, and long-term product vision
- Over time, you’ll play an influential role in evolving our architecture and infrastructure, ensuring Tussell takes full advantage of the best tools and technologies for a modern, data-driven product
- Backend Development
- Design, develop, and maintain robust APIs and backend services using Ruby on Rails
- Build and optimize data processing pipelines and automation tools using Python
- Implement scalable service-based architecture and integrate with third-party services
- Ensure code quality through comprehensive testing, code reviews, and documentation
- Understand and refactor legacy code while maintaining feature velocity
- Frontend Development
- Develop responsive, interactive user interfaces using React and modern JavaScript
- Collaborate with UX/UI designers to implement pixel-perfect, accessible designs
- Optimize frontend performance and ensure cross-browser compatibility
- Build reusable component libraries and maintain design systems
- Release & deployment
- Maintain and enhance the CI/CD pipeline
- Create and implement managed data migrations
- Drive the move to infrastructure-as-code and managed environments
- Ensure the apps are secure, highly available and performant
- Architecture & ecosystem
- Ensure that third-party components and libraries are fit for purpose
- Take part in database design and schema enhancements
- Identify opportunities to break down monolithic code into discrete services
- Lead on leveraging the capabilities of ML & LLMs to enhance our data architecture
- Technical Leadership
- Able to set standards while we transition to a small in-house team
- Mentor junior developers and provide technical guidance across projects
- Participate in architectural decisions and technology roadmap planning
- Lead code reviews and champion best practices for development workflows
- Contribute to technical documentation and knowledge sharing initiatives
- Collaboration & Delivery
- Work closely with product managers, designers, and other engineers in an agile environment
- Break down complex features into manageable tasks and deliver high-quality solutions on time
- Participate in on-call rotations and troubleshoot production issues as needed
- Continuously evaluate and recommend new technologies and tools
Salary benchmarks
Our take
Tussell fills the gap for useful and reliable information on UK public procurement, a crucial market that accounts for more than 10% of UK GDP. Their clients range from brand-name multinationals through to small companies and an increasing number of public bodies.
By building on the UK government's information transparency with data analytics, they help to make the public sector even more open. They promote competition by empowering small firms with market intelligence that was previously only accessible to big companies.
On the back of the government’s expanding financial intervention in the economy, Tussell saw record revenue growth in recent years. Due to strong demand from companies wanting to tap into the public sector, and influenced by the post Covid and Brexit space, public contracts and investment will be even more important to promoting an equitable national economic recovery.
Freddie
Company Specialist at Welcome to the Jungle
Company
Funding (1 round)
Jan 2018
$1.4m
SEED
Total funding: $1.4m
Company benefits
- Work from home opportunities
Company HQ
London, UK
Leadership
Gus Tugendhat
(Founder)Previously CEO of fintech start-up Red Deer Systems, a Managing Director at Thomson Reuters and an investment banker at Lazard.
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