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- Tasks: Own and evolve backend services for a high-scale, real-time platform.
- Company: Join a fast-growing sports manufacturing organisation in London.
- Benefits: Hybrid working, competitive pay, and potential contract extension.
- Other info: Collaborative environment with opportunities for mentorship and growth.
- Why this job: Make an impact on global commerce and enhance user experiences.
- Qualifications: Extensive backend engineering experience, especially with Elixir and GraphQL.
The predicted salary is between 60000 - 80000 £ per year.
Robert Half have partnered with a high growth sports manufacturing organisation based in London who are looking to engage an experienced Senior Backend Engineer to support the evolution of a live, transaction-driven platform as it scales internationally. This is an initial 6-month, Inside IR35 contract, focused on building and scaling core backend systems that support global commerce, real-time interactions, and the integration of newly acquired platform capabilities.
Responsibilities:
- Owning and evolving backend services within a high-scale, real-time environment
- Designing and scaling systems to support multi-currency and cross-border transactions
- Building and extending a shared transaction and ledger layer used across multiple platforms
- Supporting the integration of newly acquired products and capabilities into the core platform
- Designing and exposing APIs for frontend, mobile, and third-party platform use cases
- Handling complex transaction logic including currency conversion, fees, reconciliation, and refunds
- Supporting region-specific requirements such as tax, compliance, and shipping logic
- Improving performance, resilience, and scalability of transaction-heavy systems
- Leading architectural decisions across backend and platform services
- Mentoring engineers and contributing to higher backend engineering standards
- Collaborating closely with frontend, mobile, and product teams to deliver global user experiences
Skills:
- Extensive experience working as a Senior Backend Engineer in production environments
- Strong background designing and building distributed systems and APIs
- Proven experience building or scaling payment, ledger, or transaction systems
- Experience working with Elixir and GraphQL (strongly preferred)
- Background in eCommerce or transaction-heavy, real-time platforms operating across regions
- Ability to evolve existing systems pragmatically in fast-moving environments
- Comfortable operating with ambiguity and a strong sense of ownership
- Strong communication skills and experience working within cross-functional teams
Contract:
- Initial 6-month contract with potential to extend
- Inside IR35 London-based assignment with hybrid working (on-site expectation)
Senior Back End Developer in London employer: Robert Half
Contact Detail:
Robert Half Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Back End Developer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech industry, especially those who work in backend development. A friendly chat can lead to insider info about job openings or even referrals that could land you an interview.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving distributed systems and APIs. This is your chance to demonstrate your expertise in building transaction-heavy systems and how you’ve tackled complex challenges.
✨Tip Number 3
Prepare for technical interviews by brushing up on your knowledge of Elixir and GraphQL. Practice coding challenges and system design questions that reflect real-world scenarios you might face in a high-scale environment.
✨Tip Number 4
Don’t forget to apply through our website! We’re always on the lookout for talented individuals like you. Plus, it’s a great way to ensure your application gets the attention it deserves.
We think you need these skills to ace Senior Back End Developer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Back End Developer role. Highlight your experience with distributed systems, APIs, and any relevant technologies like Elixir and GraphQL. We want to see how your skills match what we're looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about backend engineering and how you can contribute to our live, transaction-driven platform. Keep it engaging and relevant to the job description.
Showcase Your Projects: If you've worked on any projects that involved payment systems or real-time platforms, make sure to mention them. We love seeing practical examples of your work, especially if they relate to the responsibilities listed in the job description.
Apply Through Our Website: We encourage you to apply through our website for a smoother application process. It helps us keep track of your application and ensures you don’t miss out on any important updates from us!
How to prepare for a job interview at Robert Half
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially Elixir and GraphQL. Brush up on your experience with distributed systems and APIs, as you'll likely be asked to discuss specific projects where you've implemented these technologies.
✨Showcase Your Problem-Solving Skills
Prepare to discuss complex transaction logic and how you've handled challenges like currency conversion or reconciliation in past roles. Use real examples to illustrate your thought process and decision-making skills, as this will demonstrate your ability to thrive in a fast-paced environment.
✨Emphasise Collaboration
Since the role involves working closely with cross-functional teams, be ready to share experiences where you’ve successfully collaborated with frontend, mobile, or product teams. Highlight your communication skills and how they’ve helped you achieve project goals.
✨Prepare for Architectural Discussions
Expect questions about architectural decisions you've made in previous roles. Be prepared to explain your reasoning behind certain choices and how they improved system performance, resilience, or scalability. This will show your depth of knowledge and leadership potential in backend engineering.