At a Glance
- Tasks: Lead the design and development of mobile apps, shaping technical decisions and delivering solutions.
- Company: Join one of the UK's fastest-growing tech companies with a strong focus on innovation.
- Benefits: Competitive salary, flexible working, and opportunities for professional growth.
- Other info: Be part of a certified B Corp with excellent career advancement opportunities.
- Why this job: Make a real impact in tech while working with cutting-edge tools like Flutter and Dart.
- Qualifications: 5+ years in app development, strong skills in Flutter/Dart, and experience with client interactions.
The predicted salary is between 42750 - 52250 £ per year.
Description
Zenzero is one of the UK's fastest-growing technology companies.
Named a Top 8 Technology Company at the British Business Awards 2026, recognised by Deloitte as a Best Managed Company, and featured in the Sunday Times Hundred (an annual ranking of the UK's fastest-growing private companies) in both 2025 and 2026, we hold Microsoft Solutions Partner status across all six designations, putting us in the top tier of UK Microsoft partners.
The accolades reflect something real: a business that is scaling fast, executing well, and building something that lasts.
We're on a mission to make technology genuinely work for mid-market businesses, covering managed IT, cyber security, cloud, and AI solutions that actually move the needle.
The demand is growing, and so are we.
We're also a certified B Corp and Scale Up Award winner.
That combination matters to us: high growth and high standards aren't in conflict here.
Fast growth, high standards, real impact.
If that sounds like your kind of place, keep reading.
About the Role
We are looking for a Senior Mobile Developer to lead the design, development and delivery of mobile and cross-platform applications within our DDS team.
As the primary technical authority for app development, you will work directly with clients and internal stakeholders to understand requirements, shape technical decisions and deliver effective solutions.
This is an opportunity to combine hands-on Flutter and Dart development with technical leadership.
You will modernise legacy application codebases where required, contribute to architecture and planning, and help junior and mid-level developers strengthen their app development practice.
Requirements
- Minimum 5 years commercial development experience
- Flutter / Dart — strong commercial experience building cross-platform mobile apps
- i OS and Android development principles and deployment processes
- Experience working with legacy app development technologies and codebase migration
- RESTful API design and integration
- Version control (Git) and collaborative development workflows
- Strong communication skills — comfortable dealing directly with clients
Senior App Developer employer: Zenzero Solutions
Zenzero is an exceptional employer, recognised for its rapid growth and commitment to high standards, making it a fantastic place for a Service Delivery Manager to thrive. With a strong focus on employee development, a collaborative work culture, and the opportunity to work with cutting-edge technology solutions, Zenzero offers a rewarding environment where your contributions truly make a difference. Located in the heart of the UK tech scene, employees benefit from a vibrant community and access to numerous professional growth opportunities.
StudySmarter Expert Advice🤫
We think this is how you could land Senior App Developer
✨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 Zenzero Solutions 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 Zenzero Solutions.
✨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 Zenzero Solutions.
✨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 Zenzero Solutions 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 App Developer
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 Zenzero Solutions.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Zenzero Solutions 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 Zenzero Solutions
✨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 Zenzero Solutions 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.
