Trustonic

Senior Backend Developer | JobSetuu

Trustonic

UK
['Full-Time']

Posted 5 days ago • Via jobicy.com

Description

Job Overview

  • Source: Jobicy

Job Description

Company Description

Who we are...

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.

Click here 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 job and what you’ll deliver…

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 the 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.

Please note, this is a remote role 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 serverless 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.

What we’re looking for…

Experience & Expertise

  • Strong commercial experience building Python backend systems in production
  • Proven experience working with AWS serverless 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

  • A degree in computer science, software engineering, or equivalent experience 
  • AWS certification is highly desirable but not essential

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

  • Immediate participation in our pension scheme.
  • Private medical insurance for you and your family from day one.
  • Income protection and life insurance for peace of mind.

Flexibility & work-life balance

  • Remote/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.

Growth & development

  • 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-Remote

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.

Expert Career Tips for Senior Backend Developer Roles

To succeed in a competitive market as a Senior Backend Developer, you need more than just technical skills. Here are some expert strategies to elevate your profile:

  • Build a Strong Portfolio: For technical roles, a clean GitHub or a personal project site is essential. For non-technical roles, a case study portfolio demonstrating problem-solving and impact is equally valuable. Show, don't just tell, what you have achieved in your previous positions.
  • Master the Narrative: When interviewing, use the STAR method (Situation, Task, Action, Result) to structure your answers. Quantify your results wherever possible—mentioning "increased efficiency by 20%" is much more impactful than saying "improved efficiency."
  • Continuous Learning: The industry moves fast. Whether it's staying updated with the latest AI tools or mastering a new management methodology, continuous professional development is key. Consider obtaining industry-recognized certifications that align with Senior Backend Developer requirements.
  • Networking: Connect with other professionals in similar roles. Join online communities, attend webinars, and engage in meaningful discussions on professional social networks. Often, the best opportunities come through referrals and community engagement.
  • Soft Skills Matter: Communication, empathy, and leadership are often the deciding factors between two equally qualified technical candidates. Cultivate these skills as they are universally valued across all industries and seniority levels.

Additionally, research the specific company's culture and values. Tailoring your application to show how you align with their mission can significantly increase your chances of moving forward in the process.

Salary & Compensation

Salary not disclosed; typically competitive for the role.

Work Arrangement

Type: On-Site

Standard business hours at the office.

Comprehensive Application Strategy & Hiring Process

Applying for a new role is a marathon, not a sprint. Follow this strategic approach to maximize your success rate:

1. Initial Research & Tailoring

Don't send the same resume to every employer. Spend at least 30 minutes researching the company. Look for recent news, their product roadmap, and their team structure. Modify your summary and core competencies to reflect the specific keywords found in the job description.

2. The Perfect Cover Letter

If the application allows for a cover letter, use it to tell a story that your resume cannot. Explain why you are passionate about this specific company and how your unique background makes you the perfect fit for the challenges they are currently facing.

3. Navigating the Multi-Stage Interview

Most modern hiring processes involve 3-5 stages. This typically includes a recruiter screen, a technical or skill-based assessment, a peer interview, and a final leadership round. Prepare for each stage differently: focus on enthusiasm and fit for the recruiter, technical depth for the assessment, and strategic vision for the leadership round.

4. Post-Interview Follow-Up

Always send a personalized thank-you note within 24 hours of each interview. Reference a specific topic discussed during the call to demonstrate your active listening and genuine interest in the role.

By following these steps, you demonstrate a high level of professionalism and attention to detail that sets you apart from the average applicant.

Typical Interview Process

  1. Resume screening
  2. HR call
  3. Skill interview
  4. Final manager interview
  5. Offer

Tip: Research the company's products and culture.

Global Market Intelligence & Relocation Insights

At JobSetuu, we specialize in helping talent navigate the global job market. Here is what you need to know about the current landscape in Global and beyond:

The demand for skilled professionals is increasingly borderless. For roles based in Global, understanding the local cost of living, visa requirements (if applicable), and cultural nuances is vital. If this is a remote role, consider the time zone alignment and the asynchronous communication culture of the hiring organization.

Relocation Support: Many forward-thinking companies offer relocation packages that include moving stipends, temporary housing, and legal assistance with work permits. When evaluating an offer, look beyond the base salary—consider the total compensation package, including equity, bonuses, and healthcare benefits.

Work-Life Balance Trends: Hybrid and remote work have become standard in many regions. Research the local labor laws and common practices regarding work hours and vacation time to ensure the role aligns with your lifestyle goals.

Leveraging JobSetuu's tools can help you compare salaries across different cities and understand the "purchasing power" of your potential offer, ensuring you make an informed decision for your long-term career path.

Skills & Competency Roadmap for Professional Development

To remain competitive in Professional Development, we recommend focusing on the following core competencies over the next 12-18 months:

  • Technical Mastery: Deepen your expertise in the core tools and languages relevant to your field. For developers, this might be cloud architecture; for marketers, it might be data-driven attribution modeling.
  • AI Augmentation: Learn how to leverage generative AI and automation tools to increase your productivity. Understanding how to integrate these technologies into your workflow is becoming a non-negotiable skill.
  • Leadership & Strategy: Even in individual contributor roles, the ability to think strategically and lead projects from inception to completion is highly valued. Focus on stakeholder management and high-level project planning.
  • Data Literacy: The ability to interpret data and use it to drive decisions is essential across all business functions. Familiarize yourself with data visualization and basic analytical concepts.

By investing in these areas, you not only prepare yourself for the role you are applying for today but also build a resilient foundation for the opportunities of tomorrow.

Apply via JobSetuu

Discover your next career milestone on JobSetuu. This Senior Backend Developer position is part of our commitment to bringing you the most relevant and high-impact job openings globally. At JobSetuu, we simplify your job search by aggregating premier listings and providing the tools you need to stand out. Don't miss the chance to elevate your professional journey—explore more opportunities and career insights on our platform today.

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