At a Glance
- Tasks: Design and develop exciting mobile apps that bring LEGO experiences to life.
- Company: Join the LEGO Group, a leader in creativity and innovation.
- Benefits: Enjoy family care leave, insurance, wellbeing resources, and generous discounts.
- Other info: Hybrid work policy and a commitment to equal opportunity for all applicants.
- Why this job: Make a real impact on children's play experiences while working with cutting-edge technology.
- Qualifications: Experience with Unity or similar frameworks and strong software engineering skills required.
The predicted salary is between 60000 - 80000 £ per year.
Overview
Want to build the digital play experiences that bring LEGO products to life?
This role helps ensure that strong mobile engineering becomes a foundational capability across our portfolio rather than something solved app by app.
By driving architecture, improving development practices, and supporting both modern cross-platform and legacy applications, you’ll give the team the technical strength to move faster and build with confidence.
Your work will directly support the broader organization’s ambition to deliver high-quality digital play experiences that children love and families trust.
Responsibilities
- Design, architect, develop, and maintain scalable cross-platform mobile applications for LEGO consumers.
- Lead technical decisions on app architecture, code structure, and platform strategy to support long-term scalability and maintainability.
- Maintain and evolve legacy Unity applications by delivering new features and supporting upcoming LEGO products and experiences.
- Partner closely with UI/UX designers to deliver world‑class user experiences with high attention to quality, usability, and visual detail.
- Ensure high engineering standards across code quality, testing, automation, release processes, and application reliability.
- Collaborate with Quality Assurance and Consumer Service teams to identify issues, improve app performance, and enhance customer satisfaction across multiple products.
- Mentor and support other engineers on architectural patterns, scalable development practices, and modern cross‑platform frameworks and tools.
Requirements
- Hands‑on production experience with Unity or a similar cross‑platform mobile app framework (Flutter, React Native, KMP, etc.).
- Strong software engineering fundamentals, including architecture, object‑oriented design, testing, debugging, and performance optimization.
- Proven experience designing scalable, maintainable application architecture for consumer‑facing mobile apps.
- Experience working with legacy codebases and modernizing existing applications while maintaining stability and compatibility.
- Ability to collaborate effectively across engineering, QA, design, and product teams to deliver high‑quality user experiences.
- Strong understanding of code quality practices, automated testing, CI/CD, and release processes for mobile applications.
- Significant software engineering experience, with substantial experience developing mobile or cross‑platform consumer applications.
Benefits
- Family Care Leave
- enhanced paid leave options for important times.
- Insurances
- life and disability insurance coverage for all colleagues.
- Wellbeing
- resources and benefits to nurture physical and mental wellbeing, plus opportunities to build community and inspire creativity.
- Colleague Discount
- eligibility for generous discounts from day 1.
- Bonus
- rewards through a bonus scheme when goals are reached and eligibility applies.
- Workplace
- assigned primary workplace location with hybrid work policy (average 3 days per week in the office).
The LEGO Group is highly committed to equal employment opportunity and equal pay and seeks to encourage applicants from all backgrounds (sex, gender identity or expression, race/ethnicity, national origin, sexual orientation, disability, age, and religion) to apply for roles in our team.
The LEGO Group is fully committed to Children’s Rights and Child Wellbeing across the globe.
Candidates offered positions with high engagement with children are required to take part in Child Safeguarding Background Screening, as a condition of the offer.
Thank you for sharing our global commitment to Children’s Rights.
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Senior Software Engineer (Mobile app) employer: the LEGO Group
The LEGO Group is an exceptional employer, offering a dynamic and inclusive work culture that prioritises creativity and personal development. As an eCommerce Key Account Manager, you will thrive in a supportive team environment, with access to comprehensive benefits such as enhanced family care leave, wellness initiatives, and a generous colleague discount. With a commitment to diversity and equal opportunity, this role not only allows for professional growth but also fosters a sense of belonging within a globally recognised brand.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer (Mobile app)
✨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 the LEGO Group 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 the LEGO Group.
✨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 the LEGO Group.
✨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 the LEGO Group 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 (Mobile app)
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 the LEGO Group.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at the LEGO Group 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 the LEGO Group
✨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 the LEGO Group 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.
