SaaS Technical Architect in London

SaaS Technical Architect in London

London Full-Time 70000 - 100000 £ / year (est.) Home office (partial)
Certus Sales Recruitment

At a Glance

  • Tasks: Design and develop secure, scalable backend services for a next-gen payments platform.
  • Company: Innovative fintech company at the forefront of digital finance.
  • Benefits: Competitive salary, hybrid work model, and professional growth opportunities.
  • Other info: Join a talented team focused on quality and impactful system design.
  • Why this job: Tackle complex engineering challenges and shape the future of digital finance.
  • Qualifications: 5+ years in software engineering with strong skills in TypeScript and SQL.

The predicted salary is between 70000 - 100000 £ per year.

Certus Recruitment is partnering with an innovative fintech business operating at the intersection of financial services, digital assets, and modern software engineering. As they continue to build a highly regulated next-generation payments platform, they are seeking two Senior Software Engineers to join their growing engineering team.

This is a unique opportunity to work on complex, mission-critical systems where correctness, security, and scalability are non-negotiable. Successful candidates will play a key role in designing, building, and delivering the services, applications, and core platforms that underpin a regulated financial ecosystem.

Working closely with senior technical leadership, you'll take ownership of features from concept through to production, building robust systems that process transactions, enforce compliance controls, maintain accurate financial records, and integrate with modern blockchain technologies.

Key Responsibilities
  • Design, develop, and maintain backend services and APIs
  • Build and enhance high-integrity transaction, settlement, and ledger systems
  • Deliver features across the full software lifecycle, from design through deployment
  • Contribute to customer-facing applications and internal operational tooling
  • Collaborate on smart contract integrations and blockchain-based workflows
  • Ensure systems are scalable, secure, auditable, and production-ready
  • Produce clear technical documentation and contribute to architecture discussions
  • Work within a design-led engineering culture focused on quality and long-term maintainability
Required Experience
  • 5+ years of professional software engineering experience
  • Strong experience building and operating production-grade software systems
  • Background in environments where accuracy and reliability are critical, such as fintech, payments, banking, financial services, or other highly regulated sectors
  • Commercial experience with TypeScript and modern backend development
  • Strong SQL and database design skills, ideally PostgreSQL
  • Experience taking products or platforms from early-stage development through to production
  • Excellent written communication and documentation skills
  • Ability to work collaboratively within a highly technical, engineering-led environment
Desirable Experience
  • Exposure to Rust or an interest in developing expertise in systems programming
  • Experience with React, modern frontend frameworks, and full-stack development
  • Understanding of blockchain technologies, digital assets, or cryptographic systems
  • Familiarity with event-driven architectures, distributed systems, or financial ledgers
  • Experience working within regulated industries

This role offers the opportunity to work on genuinely challenging engineering problems while helping shape the future of regulated digital finance. Candidates will join a highly capable team where engineering quality, technical ownership, and thoughtful system design are valued and rewarded.

SaaS Technical Architect in London employer: Certus Sales Recruitment

Join an innovative fintech company in London that champions a design-led engineering culture, where your contributions directly impact the future of regulated digital finance. With a strong focus on employee growth and collaboration, you'll have the opportunity to tackle complex engineering challenges while enjoying a hybrid work model and competitive benefits. This is not just a job; it's a chance to be part of a mission-driven team dedicated to building secure and scalable financial systems.

Certus Sales Recruitment

Contact Details:

Certus Sales Recruitment Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land SaaS Technical Architect in London

Tip Number 1

Network like a pro! Reach out to folks in the fintech space on LinkedIn or at meetups. A personal connection can often get your foot in the door faster than a CV.

Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, especially those involving backend services and APIs. This gives potential employers a taste of what you can do.

Tip Number 3

Prepare for technical interviews by brushing up on your SQL and TypeScript skills. Practice coding challenges that reflect real-world problems in fintech to impress your interviewers.

Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive!

We think you need these skills to ace SaaS Technical Architect in London

Backend Development
API Development
Transaction Processing
Settlement Systems
Ledger Systems
Software Lifecycle Management
Smart Contract Integration

Some tips for your application 🫡

Tailor Your CV:Make sure your CV reflects the skills and experiences that match the job description. Highlight your experience in fintech, payments, or any regulated sectors to show us you understand the environment you'll be working in.

Showcase Your Projects:Include specific examples of projects you've worked on, especially those involving backend services, APIs, or blockchain technologies. We want to see how you've tackled complex problems and delivered robust solutions.

Craft a Compelling Cover Letter:Use your cover letter to tell us why you're passionate about this role and how your background aligns with our mission. Be genuine and let your personality shine through – we love to see enthusiasm!

Apply Through Our Website:For the best chance of success, make sure to apply directly through our website. This helps us keep track of your application and ensures it gets the attention it deserves!

How to prepare for a job interview at Certus Sales Recruitment

Know Your Tech Inside Out

Make sure you’re well-versed in the technologies mentioned in the job description, especially TypeScript and SQL. Brush up on your knowledge of backend development and be ready to discuss how you've built production-grade systems in the past.

Showcase Your Problem-Solving Skills

Prepare to talk about specific challenges you've faced in previous roles, particularly in fintech or regulated environments. Use the STAR method (Situation, Task, Action, Result) to structure your answers and highlight your ability to deliver robust solutions.

Demonstrate Collaboration

This role requires working closely with technical leadership and other engineers. Be ready to share examples of how you’ve successfully collaborated on projects, especially those involving complex systems or blockchain technologies. Highlight your communication skills and teamwork.

Ask Insightful Questions

At the end of the interview, don’t forget to ask questions that show your interest in the company and the role. Inquire about their design-led engineering culture or how they ensure system scalability and security. This shows you’re genuinely interested and engaged.