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- Tasks: Lead back-end development for a high-traffic mobile app using Kotlin, Java, and GCP.
- Company: Join a global tech organisation with a focus on innovation and collaboration.
- Benefits: Enjoy a long-term contract with stability, competitive pay, and a hybrid work model.
- Why this job: Make a real impact on large-scale systems while mentoring and growing your skills.
- Qualifications: Strong experience in Java/Kotlin, RESTful APIs, and cloud technologies like GCP.
- Other info: Embrace diversity and thrive in a dynamic, agile environment.
The predicted salary is between 36000 - 60000 £ per year.
London (Hybrid – 4 days onsite, 1 remote). I’m currently working with a global technology organisation looking to bring on an experienced Senior Back End Engineer (Kotlin/Java/GCP) to join a well-established Mobile App Engineering function. You’ll be joining a cross-functional, product-aligned feature team working on the back end of a high-traffic mobile application with millions of MAU. This is a long-term contract role offering stability, technical ownership, and the opportunity to work on complex, large-scale systems.
The Role
As a Senior Back End Engineer (Kotlin/Java/GCP), you’ll play a technical leadership role within the team, helping translate business needs into scalable, well-architected platform solutions. You’ll work closely with mobile, frontend, and backend teams to ensure the platform enables high-quality feature delivery across the app. This role suits someone who values software craftsmanship, enjoys mentoring others, and thrives in collaborative, agile environments.
Required Experience
- Strong experience within the Java ecosystem, ideally Kotlin
- Deep knowledge of Spring / Spring Boot
- Experience designing and building RESTful APIs
- Hands-on experience with GCP
- Familiarity with event-driven systems and distributed architectures
- Experience with observability and monitoring tools (e.g. Grafana, Splunk)
- Comfortable working with CI/CD pipelines and modern DevOps practices
- Strong knowledge of Git and collaborative development workflows
- Strong focus on clean, maintainable, well-tested code
- Comfortable working with pair programming and mobbing
- Experience contributing to robust testing strategies across the development lifecycle
- Pragmatic, delivery-focused mindset
The Ideal Candidate
- Has operated successfully in Senior Engineer or Technical Lead roles
- Values team success and knowledge sharing
- Comfortable working in ambiguous problem spaces
- Proactive, adaptable, and collaborative
- Enjoys mentoring and supporting the growth of others
If you’re a Senior Back End Engineer looking for a long-term contract working on large-scale mobile platforms, I’d love to have a conversation. Feel free to reach out directly or apply via LinkedIn.
At Pixelated People, we don’t just do inclusion and diversity. We embrace people that have different opinions, perspectives and personalities. Because we believe that by seeing the world from all sorts of angles, we can make life better for all the people who live in it. So we want you to know that the things that make you, you — like your age, ability, background and identity — are things that we celebrate and support.
Senior Back End Developer (Kotlin/Java/GCP) - 12 month Contract (Inside IR35) in London employer: Pixelated People
Contact Detail:
Pixelated People Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Back End Developer (Kotlin/Java/GCP) - 12 month Contract (Inside IR35) in London
✨Network Like a Pro
Get out there and connect with folks in the industry! Attend meetups, tech conferences, or even local coding events. You never know who might have a lead on that perfect Senior Back End Engineer role.
✨Show Off Your Skills
Don’t just talk about your experience; demonstrate it! Consider building a small project or contributing to open-source. This way, you can showcase your Kotlin/Java skills and your ability to work with GCP, which will definitely catch the eye of potential employers.
✨Ace the Interview
Prepare for those technical interviews by brushing up on your coding skills and system design knowledge. Practice common interview questions related to RESTful APIs and CI/CD pipelines. Remember, confidence is key, so show them you’re the right fit for their team!
✨Apply Through Our Website
We’ve got your back! Make sure to apply through our website for the best chance at landing that contract. It’s a straightforward process, and we’re here to help you every step of the way!
We think you need these skills to ace Senior Back End Developer (Kotlin/Java/GCP) - 12 month Contract (Inside IR35) in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Kotlin, Java, and GCP. We want to see how your skills align with the role, so don’t be shy about showcasing your relevant projects and achievements!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re passionate about back-end development and how you can contribute to our team. We love seeing your personality come through, so let it reflect who you are.
Showcase Your Technical Skills: When filling out your application, make sure to mention your experience with RESTful APIs, CI/CD pipelines, and any observability tools you've used. We’re looking for someone who’s not just technically skilled but also values clean and maintainable code.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates. Plus, we love seeing applications come in through our own channels!
How to prepare for a job interview at Pixelated People
✨Know Your Tech Stack Inside Out
Make sure you’re well-versed in Kotlin, Java, and GCP. Brush up on your knowledge of Spring and Spring Boot, as well as RESTful APIs. Be ready to discuss your past experiences with these technologies and how you've used them to solve complex problems.
✨Showcase Your Leadership Skills
As a Senior Back End Engineer, you'll be expected to take on a technical leadership role. Prepare examples of how you've mentored others or led projects in the past. Highlight your ability to translate business needs into scalable solutions and how you’ve contributed to team success.
✨Demonstrate Your Collaborative Spirit
This role thrives in a cross-functional environment, so be prepared to discuss how you’ve worked with mobile, frontend, and backend teams. Share experiences where collaboration led to successful feature delivery, and don’t forget to mention your comfort with pair programming and mobbing.
✨Prepare for Problem-Solving Questions
Expect to face some ambiguous problem scenarios during the interview. Think about how you approach problem-solving and be ready to articulate your thought process. Show that you can adapt and find pragmatic solutions, even when faced with challenges.