Python Software Developer jobs in United Kingdom

At TOPPAN Security, our mission is to shape a meaningful, technology-driven future by being a global leader in mission-critical identity and payment technologies.

We serves as the international development arm of the TOPPAN Group in the security domain founded in 1900. TOPPAN is a trusted Japanese brand renowned for its commitment to exceptional quality. Building on this legacy, we combine bold ideas, deep sector expertise, and collaborative intelligence to deliver secure, future-ready solutions.

Our culture is grounded in four core values: Agility, Ownership, Resilience, and a Sense of Fun. We move fast, lead with accountability, grow through challenges, and bring positive energy into everything we do.

Join us and be part of a global, collaborative team where trust and innovation drive everything we do.

We’re looking for a Senior Software Developer to be part of the creation of innovative, secure, and scalable software solutions from front to back end. You’ll combine hands‑on coding with technical leadership, working in an agile environment to deliver high‑quality products, mentor junior developers, and collaborate across teams — with opportunities for occasional international travel.

Duties and Responsibilities include the following. Other duties may be assigned.

• Be assigned to lead the analysis, development, and delivery of software projects or subsets of an existing project
• Work with other functions within the Business to shape up and develop quality software systems and solutions
• Implementation, including day‑to‑day software programming, unit testing, bug fixing, documentation, and 3rd line support
• Provide expert technical know‑how to the internal and external customers
• Able to explore and work within unfamiliar software environments and platforms when required
• Provide support and mentorship to junior developers when required

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• 7 years or more, full‑stack front and backend software development
• Complete and thorough understanding of the SOLID principles and demonstrable real‑world applications
• Competent in programming in C# and with in‑depth experience in .Net Framework, .Net Core and the latest .Net frameworks
• Experience in Angular 5+, able to code in TypeScript
• Flexibility to take on assignments requiring development in other programming languages, technologies that may require additional familiarization or training
• Working with MSSQL database predominantly, other RDMS are beneficial i.e. Oracle, MySQL, SQLite, PostgreSQL
• Experience in working within the Microsoft Azure DevOps space – including source control, build and release pipelines, CD/CI concepts
• Experience in using Octopus Deploy or similar automated software packaging and deployment platforms
• Analytical and articulate. Be able to present and discuss ideas within small or large groups of the audience
• Must have experience in working within an Agile software delivery environment and squad(s). Demonstrable understanding of the Agile software development methodology and principles
• Understanding the need for Secure Software Development Life Cycle

• Hardware integration into software layers
• Programming in Java, modern Java frameworks and deployment ecosystems
• Utilising AI assistance in software development workflows to increase efficiency, accuracy and productivity
• DevOps automation - software configuration, deployment and maintenance
• Test Driven Development
• Micro Services – beneficial but not essential, containerization concepts, i.e. Docker/Kubernetes
• PKI Infrastructure, Software security
• Software testing methodologies

• Degree holder in Computer Science, Computer Engineering, or related disciplines
• Experience in agile software development methodologies is required
• Experience in software development for customer‑facing products is highly preferred
• Ability to communicate and be well‑spoken is essential to integrate into a fast‑moving team and be able to interact directly with customers during problem analysis

• Ability to effectively communicate in the English language verbally and in writing.
• Proficient in communication with cross-regional teams
• Ability to read and interpret technical journals, specifications, international technical standards, etc.

• Trustworthy, open, humble personality
• Confident, decisive, extremely well organized, and solution-oriented
• Energetic, self‑motivated, able to work independently, and is a good team player with first‑class analytical and troubleshooting skills
• Excited by new technologies and challenges and a speedy learner

TOPPAN is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, gender, sexual orientation, age, color, religion, national origin, veteran status, or disability.