At Trustonic, we make smartphones affordable for many, enabling global access to devices and digital finance through the world’s most secure smartphone locking technology.
Job Description
We’re looking for a Senior Backend Engineer to play a key role in building and scaling our cloud‑native telecoms platform. You’ll design and deliver backend services that power device lifecycle management at scale, working on highly distributed, event‑driven systems in AWS. This is a high‑impact engineering role where you’ll help shape architecture, influence technical direction, and deliver resilient, production‑grade services. You’ll work at the intersection of performance, scalability and reliability, solving complex problems that directly impact real‑world systems and customers. The role is remote with attendance required at our office in Winnersh from time to time.
What you’ll do
* Build scalable cloud services – Design and develop Python‑based backend services, from early concept through to production, using modern AWS server‑less technologies.
* Deliver event‑driven architectures – Create and evolve event‑driven systems using AWS Lambda, SQS, SNS and Step Functions to support high‑scale device operations.
* Own backend quality & performance – Write clean, testable code and continuously improve system reliability, observability and performance in production environments.
* Shape system architecture – Contribute to architecture decisions, design reviews and technical strategy across multiple backend services.
* Drive engineering best practices – Promote strong SDLC practices including CI/CD, automated testing, monitoring and structured logging.
* Collaborate across teams – Work closely with product, QA and other engineers to deliver high‑quality features and improve overall platform resilience.
* Solve complex problems – Diagnose and resolve issues across distributed systems, including performance bottlenecks and production incidents.
* Support critical systems – Participate in incident response and continuous improvement of business‑critical AWS workloads.
Experience & Expertise
* Strong commercial experience building Python backend systems in production.
* Proven experience working with AWS server‑less technologies (Lambda, API Gateway, SQS, SNS).
* Solid understanding of event‑driven and distributed architectures.
* Experience with PostgreSQL (schema design, optimisation) and/or DynamoDB.
* Hands‑on experience with Docker, Terraform and CI/CD pipelines.
Technical Strength
* Strong Python skills (modern features such as async, typing and testing practices).
* Experience building APIs using frameworks like FastAPI or Flask.
* Understanding of observability, logging and monitoring in cloud environments.
* Comfortable debugging complex, distributed systems.
Nice to have
* Experience with Airflow, PySpark or data pipelines.
* Exposure to telecoms, IoT or device management platforms.
* Familiarity with multi‑tenant SaaS architectures.
* AWS certifications.
Ways of Working
* Thrive in a fast‑paced, evolving engineering environment.
* Strong problem‑solving mindset with attention to detail.
* Collaborative, pragmatic and delivery‑focused.
* Comfortable taking ownership and driving work independently.
* Curious and continuously looking to improve systems and practices.
Qualifications
* Degree in computer science, software engineering or equivalent experience.
* AWS certification is highly desirable but not essential.
Benefits
* Competitive Compensation
o Base salary reflects your expertise and impact.
o Bonus scheme to share in our success.
* Financial security & wellbeing
o Immediate participation in our pension scheme.
o Private medical insurance for you and your family from day one.
o Income protection and life insurance for peace of mind.
* Flexibility & work‑life balance
o Remote/hybrid working arrangements to support your lifestyle.
o An open holiday policy with no upper limit—take the time you need, when you need it.
o Support for volunteering and causes that matter to you.
* Growth & development
o Opportunities for professional development and career progression.
o Exposure and interaction with global teams.
* Inclusive, supportive culture
o Commitment to diversity, equity and inclusion.
o Collaborative environment where your voice is valued and your wellbeing is prioritised.
* Impact & purpose
o The chance to work on technology that drives global economic inclusion and makes a real difference in people’s lives.
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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