Senior Software Engineer I in London

Senior Software Engineer I in London

London Full-Time 58500 - 71500 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Develop next-gen payment tech and mentor junior engineers while collaborating with diverse teams.
  • Company: Join Checkout.com, a leader in innovative payment solutions with a focus on inclusivity.
  • Benefits: Enjoy a hybrid work model, competitive salary, and opportunities for professional growth.
  • Other info: Embrace a dynamic culture that values diversity and offers excellent career advancement.
  • Why this job: Make a real impact in the fintech world while working with cutting-edge technologies.
  • Qualifications: Degree in Computer Science or related field; proficiency in C#, Java, or Go required.

The predicted salary is between 58500 - 71500 £ per year.

Job Summary

Senior Software Engineer at Checkout. com will develop next‑generation payment technologies to help merchants increase acceptance rates, reduce costs, combat fraud, and create outstanding customer experiences.

Working across Checkout. com’s portfolio of products, you will design, build, and maintain scalable, high‑availability systems while mentoring junior engineers and collaborating with cross‑functional teams.

Responsibilities

  • Lead and drive specific projects that are critical to Checkout’s needs, setting priorities, deadlines, and deliverables.
  • Collaborate with product management, design, and other engineering teams across a large community.
  • Design, develop, test, deploy, maintain, and enhance software solutions in a backend or full‑stack environment.
  • Mentor junior team members and assist in their technical development.
  • Build, own, and operate systems to the highest levels of resilience and service.

Qualifications

  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
  • Proficiency in C# . NET, Java, or Go with a strong understanding of software development principles in a backend or full‑stack context.
  • Excellent communication skills and the ability to interact effectively with a wide range of stakeholders.
  • Experience in agile environments and delivering high‑quality code within tight deadlines.
  • Strong problem‑solving skills and the ability to work independently as well as part of a team.
  • AI proficiency or curiosity, and a willingness to embrace the latest technologies to improve productivity.
  • Payments or financial knowledge is a plus, but not required.
  • Impact

Collaborate with cross‑functional teams; define and design loosely coupled, scalable microservices using industry best practices; stay up‑to‑date with the latest technologies; write clean, maintainable, testable code; mentor junior engineers; and own resilient, high‑reliability systems within Checkout’s impact‑driven culture.

Benefits

Hybrid working model offering flexibility with three days per week in the office to support collaboration and connection.

Inclusive Culture

Checkout. com values diversity and inclusion, encouraging applicants from all backgrounds and identities to apply.

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Senior Software Engineer I in London employer: 0026 Checkout Technology Ltd

At Checkout.com, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters collaboration and innovation. Our London headquarters is not just a workplace; it's a thriving environment where employees are empowered to take ownership of their roles, supported by a hybrid working model that promotes flexibility and work-life balance. With a strong focus on personal and professional growth, we provide ample opportunities for development, ensuring that every team member can make a meaningful impact in the fast-paced world of fintech.

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Contact Details:

0026 Checkout Technology Ltd Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Software Engineer I in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at 0026 Checkout Technology Ltd or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to 0026 Checkout Technology Ltd.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like 0026 Checkout Technology Ltd.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like 0026 Checkout Technology Ltd that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior Software Engineer I in London

C# .NET
Java
Go
Software Development Principles
Backend Development
Full-Stack Development
Agile Methodologies

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at 0026 Checkout Technology Ltd.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at 0026 Checkout Technology Ltd and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at 0026 Checkout Technology Ltd

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If 0026 Checkout Technology Ltd uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.