Junior Software Engineer jobs in United Kingdom

KO2's client develops cutting‑edge technologies that have a real‑world impact. They’re now looking for a Full Stack Software Developer to join their growing digital team in Newcastle and take their software platforms to the next level.

This is your chance to own and evolve web, mobile, and cloud solutions – integrating seamlessly with industry‑leading hardware and delivering insights that matter.

As a key member of the digital team, you’ll:

• Enhance and evolve an ASP.NET Core web application and supporting services
• Develop intuitive front‑end interfaces and robust back‑end APIs
• Ensure seamless presentation across web and mobile platforms
• Integrate with PC and mobile apps that sync with the client’s hardware devices
• Drive DevOps best practices across CI/CD pipelines, monitoring, and deployment
• Design and maintain a cybersecurity‑first architecture, including penetration testing
• Optimise an Azure‑based infrastructure for high availability and cost efficiency
• Collaborate with cross‑functional teams to deliver impactful new features
• Shape the design of future products, including AI and data modelling initiatives

• Web: ASP.NET Core, C#, JavaScript, HTML/CSS
• PC: C#, XAML, USB-MTP
• Mobile: Cordova (iOS & Android)
• Cloud: Microsoft Azure, CI/CD pipelines, version control, automated testing
• Security: Secure coding, authentication, penetration testing
• Hardware: Industry‑leading devices, digitally integrated

KO2’s client is seeking a creative, forward‑thinking developer who thrives in collaboration and is excited about building systems with real‑world impact.

• Strong experience with C#, ASP.NET Core, JavaScript, HTML/CSS
• Expertise in RESTful API design and integration
• An eye for UX/UI design and brand‑consistent interfaces
• Knowledge of DevOps practices (CI/CD, version control, automation)
• Hands‑on experience with Microsoft Azure and performance tuning
• Solid understanding of cybersecurity best practices
• Familiarity with mobile or desktop development (a plus!)
• A proactive, innovative mindset with a passion for improvement

With KO2’s client, your work will directly impact global industries and communities. You’ll enjoy:

• Competitive salary & benefits
• Flexible, hybrid working in Newcastle
• Opportunities to grow into new tech areas, including AI and data science
• A supportive, collaborative culture where innovation is celebrated

Ready to make an impact? Apply now and help build the next generation of digital solutions with KO2’s client.