At a Glance
- Tasks: Join a dynamic team to build secure, cloud-native applications that impact millions.
- Company: Trustonic, a leader in smartphone security and economic inclusion.
- Benefits: Competitive salary, private medical insurance, unlimited holiday, and hybrid work options.
- Other info: Inclusive culture that values diversity and supports professional growth.
- Why this job: Make a real difference with innovative technology while enjoying a flexible work-life balance.
- Qualifications: Experience in Python, AWS, and modern frontend technologies like React.
The predicted salary is between 60750 - 74250 £ per year.
At Trustonic, we make smartphones affordable for the many, enabling global access to devices and digital finance through the world’s most secure smartphone locking technology.
We partner with mobile carriers, retailers, and financiers across 30+ countries, powering device financing solutions that drive economic inclusion, profitability, and growth.
We pride ourselves on living by the Trustonic culture code, a blueprint for our journey that recognises that great working environments don’t guarantee success, but bad ones almost always ensure failure.
Working here, you’ll find a company that celebrates its diversity and is looking to do the right thing: for each other, the community and the planet.
We believe in equal opportunities and take to heart the old African proverb ’If you only want to go fast, go alone.
If you want to go far, go together’.
We work flexibly when and where we’re at our best, but regardless of how you choose to work, we’ll make sure you feel like one of the team.
Clickhere if you would like to find out more about Trustonic's culture code.
If you would like to work in a fast-moving global technology company, with great ambition, then we’d love to hear from you!
Job Description
A bit about the team and what you'll deliver...
As a
Senior Software Engineer -Fullstack you'll join a collaborative, multidisciplinary engineering team responsible for building the cloud platform and user-facing applications that power Trustonic's secure connected device ecosystem.
Working alongside Product, UX, QA and fellow engineers, you'll contribute across the full technology stack, helping to create intuitive user experiences backed by secure, scalable cloud services.
In this role, you'll deliver end-to-end features that have a direct impact on customers, combining modern frontend development with robust backend engineering.
Your work will help shape highly available, cloud-native solutions that are secure, performant and capable of supporting millions of devices worldwide, while contributing to a culture of innovation, technical excellence and continuous improvement.
Please note, this is a hybrid role with regular attendance required at our office in Winnersh.
- As a
- Senior Software Engineer -Fullstack
, you will
- Design, build, debug, and deliver cloud-native features across the Trustonicplatform from early development through production release.
- Develop and enhance AWS-based microservices, with strong focus on AWS Lambda, SQS-driven workflows, API Gateway, and App Sync integrations.
- Build reliable backend services in Python 3 (Fast API/Flask) and support event-driven processing patterns for high-scale device operations.
- Collaborate with QA and product engineering teams to improve release quality, performance, and resilience of ALPS services.
- Lead orparticipatein architecture discussions, design reviews, and code reviews across multiple backend services.
- Implement and promote SDLC best practices: requirements refinement, test strategy, CI/CD, observability, and production support.
- Diagnose and resolve production defects, performance bottlenecks, and integration issues across distributed systems.
- Support L3 operations, incident response, and post-incident improvements for business-critical AWS workloads.
Who you are...
- Team player
- Energetic and passionate about delivering great software in a rapidly growingenvironment
- Prepared to invest whatever effort isrequiredto get the jobdone
- Operatewithintegrity and transparency and conduct business in a propermanner
- Tenacious with a problem-solving approach
- Organised, rigorous andautonomous
What makes you, you...
Skills
- React 18+ - functional components and hooks (use State, use Effect, use Context, custom hooks).
- Component-based UI architecture, JSX, and consuming REST/Graph QLAPIs from the frontend.
- Jest and React Testing Library for unit and component-level testing.
- Cypress (or similar) for end-to-end frontend testing.
- Python 3.10+ - strongproficiencyincluding type hints, dataclasses, and async patterns.
- AWS Lambda Powertools(Logger, Tracer, Metrics) for observability.
- Fast APIor Flask for containerised microservices.
- Hands-on AWSexpertise: Lambda, SQS, SNS, Step Functions, App Sync (Graph QL), API Gateway, Cloud Watch, X-Ray, IAM, S3, and VPC fundamentals.
- Postgre SQL RDS - schema design, Alembic migrations, query optimisation.
- Redis - caching, pub/sub, distributed locks and idempotency patterns.
- Serverless Framework v3, Docker (container-based Lambdas), Terraform, Jenkins CI/CD.
- Apache Airflow DAG authoring and AWS Glue with Py Sparkfor batch ETL.
- pytestand moto (offline AWS service mocking), Black formatter, ruff linter.
- Datadog APM tracing and structured JSON logging with Lambda Powertools.
- Strong debugging skills across async event flows, API behaviour, and distributed systems.
- Good working knowledge of Linux, Git workflows, and infrastructure as code.
Experience and Knowledge
- A degree in computer science, software engineering, or equivalent experience
- Proven commercial experience building Python-based AWS Lambda services in production.
- Strong experience with Postgre SQL (schema design, Alembic migrations) and Dynamo DB (access patterns, Streams).
- Experience with event-driven architectures: SQS, SNS, Step Functions, DLQ and retry patterns.
- Hands-on AWS infrastructure experience: Serverless Framework v3, Terraform, ECR, IAM.
- Experience deploying Docker container-based Lambda functions.
- Data engineering background with Airflow DAGs and Py Spark/Glue ETL pipelines is an advantage.
- Multi-tenant Saa S platform experience at scale is desirable.
- Familiarity with telecom, OEM device management, or Io T platforms is a plus.
- Experience with CDC (Change Data Capture) and real-time data sync patterns is a plus.
- Experience reading ormaintaining Java Spring Boot services is beneficial.
- AWS certification is highly desirable but not essential.
Qualifications
Additional Information
What we can provide you in return for your investment...
- Competitive compensation
- A base salary that reflects your expertise and impact.
- Bonus scheme to share in our success.
- Financial security & wellbeing
- Private medical insurance for you and your family from day one.
- Income protection and life insurance for peace of mind.
- Flexibility & work-life balance
- Hybrid working arrangements to support your lifestyle.
- An open holiday policy with no upper limit—take the time you need, when you need it.
- Support for volunteering and causes that matter to you.
- Opportunities for professional development and career progression.
- Exposure and interaction with global teams.
- Inclusive, supportive culture
- A commitment to diversity, equity, and inclusion.
- A collaborative environment where your voice is valued and your wellbeing is prioritised.
- Impact & purpose
- The chance to work on technology that drives global economic inclusion and makes a real difference in people’s lives.
- #LI-Hybrid
Trustonic is an equal opportunity employer. We do not discriminate on any grounds.
We empower, engage, enable and value differences between people, including; different races, ethnicities, genders, ages, religions, disabilities and sexual orientations, with differences in education, backgrounds, skill sets, experiences and knowledge
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Senior Software Engineer - Fullstack in Winnersh employer: Trustonic Limited
Trustonic Limited is an excellent employer for Fullstack Engineers, offering a dynamic work environment that fosters innovation and collaboration within a multidisciplinary team. Located in Winnersh, employees benefit from a hybrid work model that promotes work-life balance, alongside opportunities for professional growth and development in cutting-edge cloud technologies. With a strong emphasis on security and performance, Trustonic provides a meaningful and rewarding experience for those passionate about building scalable solutions for connected devices.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer - Fullstack in Winnersh
✨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 Trustonic Limited 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 Trustonic Limited.
✨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 Trustonic Limited.
✨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 Trustonic Limited 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 - Fullstack in Winnersh
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 Trustonic Limited.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Trustonic Limited 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 Trustonic Limited
✨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 Trustonic Limited 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.
