cover image
Certes Computing Ltd

Senior Python Software Developer

Remote

London, United kingdom

£ 650 /day

Senior

Freelance

06-01-2026

Share this job:

Skills

Leadership Python JavaScript Ruby HTML CSS Docker Kubernetes Version Control Architecture Software Architecture git Agile

Job Specifications

Senior Python Software Developer

Duration: 12 Months

Location: London & remote (hybrid)

Rate: £650 per day

IR35 Status: Inside

Start: ASAP

A Senior Python Software Developer is required for our government client, where you will be working on a specific project where they are transforming and redesigning their data hub, which provides access to a variety of public sector data.

We require an experienced full stack developer with extensive Python experience.

You will have previous experience developing across a number of services on the Front End and Back End including Web Services.

Proficient in creating good and well documented code and take ownership of the development process.

Also to work well with UCD (user centre design) teams and other technical experts on their side.

You will be part of a small agile and multi-disciplinary team and confident to clearly explain key concepts and articulate projects. You will be the Senior Developer but also the voice for the project too.

Responsibilities include:

Work within a multi-disciplinary product team and lead decisions on development and maintenance of a robust, scalable open data website (Front End and Back End); it's services and API's.
Provide strategic technical leadership by setting software architecture, engineering practices, and technical direction across the team
Define and evolve scalable, secure design patterns and coding standards, ensuring alignment with government standards and cross-government platforms
Collaborate with teams to select technologies, shape roadmaps, and deliver resilient, maintainable digital services that meet programme goals
Represent the department at technical forums, open-source communities, and government working groups
Ensure delivery aligns with the Service Standard, Technology Code of Practice, and departmental governance processes

Essential Skills & Experience required:

As the Senior Python Developer you will possess the following:

Significant experience in software engineering, including leading the development of production-level web services.
Strong coding ability in Python/Ruby and at least one other modern language
Strong Docker and Kubernetes experience
An understanding and the ability to work with HTML, CSS and JavaScript.
Skilled working with GIT as a version control system and effectively documenting development.
Experience of developing containerised applications and the capability to work with engineers to deploy applications in the cloud.
Ability to engage with non-technical stakeholders and explain complex technical concepts in a clear, accessible way
Experience leading delivery across multi-disciplinary teams

Hybrid working - This role requires two days per week onsite at the clients office in London. However; if preferred you can be based two days per week at their Manchester office instead.

Certes Computing (and all of its subsidiary companies) is committed to promoting equality and diversity in its business operations.

About the Company

Certes began in 1983 as an IT development company. With 4 decades of experience, today, we have grown to become leading experts in delivering IT service solutions. Experienced in agile IT resource planning, we help organisations across a range of sectors, supporting their transition to new services and technologies. With a continued focus on the digitisation of services as part of organisational transformation, the demand for high-quality IT resources is increasing. As a specialist provider of IT professionals and capability... Know more