At a Glance
- Tasks: Design and build core financial processing services using Go for an innovative fintech platform.
- Company: Early-stage fintech company focused on secure financial processing and AI capabilities.
- Benefits: Competitive pay for 1-2 days a week, flexible working arrangements, and impactful role.
- Other info: Opportunity for hands-on engineering and architectural ownership in a growing startup.
- Why this job: Join a dynamic team to shape the future of finance with cutting-edge technology.
- Qualifications: Experience in backend development with Go and strong fintech knowledge required.
The predicted salary is between 59400 - 72600 £ per year.
Location: London
Salary: Competitive
Job Type: Fractional, 1-2 days per week
About The Company: Our client is an early-stage financial technology business building an intelligent platform that combines secure financial processing with advanced data and AI capabilities. Accuracy, auditability and transaction integrity sit at the heart of the product. The business is now looking for an experienced backend engineer to help create the core financial engine and establish a robust technical foundation for future development and scale.
The Role: The Fractional Fintech Backend Engineer will design and build the core ledger and financial processing services using Go. The role will involve creating deterministic, event-sourced systems that ensure financial transactions remain balanced, traceable and safe. Working directly with the founder and alongside graph, AI and infrastructure specialists, the successful candidate will translate complex accounting requirements into secure, maintainable software and reliable integrations.
Key Responsibilities:
- Design and build an append-only, event-sourced double-entry ledger using Go
- Develop strict, type-safe validation logic that ensures financial transactions balance before execution
- Create secure, high-performance APIs and microservices for financial data and open banking integrations
- Build reliable processes for idempotency, reconciliation, audit trails and transaction safety
- Manage low-latency communication between backend services, graph databases and AI components
- Establish engineering patterns for security, automated testing, observability, resilience and maintainability
- Work closely with financial and product specialists to convert complex accounting requirements into clear technical solutions
- Provide senior technical guidance while remaining closely involved in hands-on implementation
You:
- Significant commercial experience developing concurrent, high-throughput backend services using Go
- Strong fintech experience gained within banking, payments, open banking, accounting software or another transaction-intensive environment
- Thorough knowledge of event sourcing, double-entry ledger concepts, idempotency, reconciliation and transaction safety
- Excellent API, database, distributed systems and automated testing fundamentals
- Strong understanding of security, data protection and auditability when handling sensitive financial information
- Comfortable working with ambiguity, taking ownership of architectural decisions and explaining complex technical issues clearly
- Experience with PostgreSQL, Neo4j, GCP, Moneyhub or similar financial data integrations would be advantageous
Benefits:
- Competitive remuneration for a fractional commitment of 1-2 days per week
- Opportunity to build the core financial engine of an innovative early-stage platform
- Flexible working arrangements with London listed as the role location
- A high-impact role combining architectural ownership with hands-on engineering
Fractional Fintech Backend Engineer in City of London employer: Elliot Marsh
Join an established garden furniture and outdoor living business in Manchester as a Managing Director, where you will have the opportunity to lead a dynamic team and shape the future of an international brand. The company fosters a culture of growth and development, offering ongoing personal and professional training, including executive coaching and leadership development, alongside a competitive salary package with bonuses and private healthcare. With a strong emphasis on international markets and a commitment to employee empowerment, this role provides a unique chance to make a significant impact in a thriving industry.
StudySmarter Expert Advice🤫
We think this is how you could land Fractional Fintech Backend Engineer in City of London
✨Tap into Online Freelance Networks
Jump onto platforms like Upwork or Freelancer where finance and accounting gigs pop up all the time. Build a strong profile that showcases your financial controlling expertise, and don’t hesitate to apply for projects that fit your skillset.
✨Connect with Finance Communities
Join finance-specific groups on LinkedIn or forums like Finance Club. Engage in discussions and share insights to get noticed. This can lead to word-of-mouth recommendations and direct job leads from fellow finance professionals.
✨Show Off Your Knowledge
Create a public portfolio showcasing your projects or case studies related to financial controlling. Consider writing articles or blogs about finance trends or strategies, which can help establish your credibility and attract new clients.
✨Leverage Local Meetups
Keep an eye out for finance meetups or workshops in your area. They’re perfect for networking and can often lead to freelance opportunities. Plus, having that face-to-face connection can set you apart from the competition when clients are choosing who to hire.
We think you need these skills to ace Fractional Fintech Backend Engineer in City of London
Some tips for your application 🫡
Show off your qualifications:In financial controlling, it's essential to highlight your relevant qualifications. Make sure to include any certifications like ACCA or CIMA in your CV, as they particularly catch the eye of hiring managers in this field. It's all about showcasing your expertise!
Portfolio of projects:As a freelancer, your portfolio is your best friend. Include case studies or summaries of past financial projects you've worked on. Clearly outline the challenges you faced, the solutions you implemented, and the outcomes. This not only showcases your skills but also proves your value to potential clients like Elliot Marsh.
Be clear about your rates:When applying for freelance gigs, it's wise to be upfront about your rates in your application. Clearly stating your hourly or project-based fees can save both you and Elliot Marsh time down the line. It shows you’re professional and ready to jump into negotiations.
Personalise your application:Don’t just send a generic application to Elliot Marsh. Tailor your cover letter to include specific examples of how your skills in financial controlling align with their needs. Mention any software tools you're proficient with, like ERP systems or financial modelling tools, that are relevant to the role.
How to prepare for a job interview at Elliot Marsh
✨Showcase Your Analytical Skills
In financial controlling, your ability to analyse data is vital. Make sure we highlight specific examples from your previous work where you've utilised analytical tools like Excel or specific forecasting software. The interviewers at Elliot Marsh will want to see your numbers dance!
✨Prepare to Discuss Financial Strategies
Expect questions around how you approach financial strategy development. Have a few examples of successful strategies you've implemented in the past, as these can demonstrate your value to Elliot Marsh. We should also think about discussing risk management, as it'll show you're thinking ahead.
✨Tailor Your Portfolio for Freelance Success
As a freelancer, your portfolio is your calling card! Let’s make sure it’s packed with case studies that showcase your financial projects, perhaps including any forecasting or budgeting you’ve done for diverse clients. Highlighting your versatility will be key to impressing Elliot Marsh.
✨Pitch Your Services Confidently
When working as a freelancer, be prepared to discuss not just your experience but also your rates and value proposition. We need to have a clear idea of how your skills will fit into Elliot Marsh's needs. Confidence in pitching your worth can go a long way!
