At a Glance
- Tasks: Design and build high-performance financial calculation services using Go.
- Company: Join Delio, a leader in private market financial infrastructure.
- Benefits: Competitive salary, hybrid working, 25 days holiday, and private medical insurance.
- Other info: Be part of a supportive team with excellent growth opportunities.
- Why this job: Tackle complex data challenges and shape the future of financial systems.
- Qualifications: Strong Go experience and a passion for backend development in data-heavy environments.
The predicted salary is between 60000 - 80000 € per year.
The Delio Core OS platform supports the full private markets lifecycle, from deal origination and execution through to ongoing portfolio monitoring and reporting. This role sits specifically within the portfolio monitoring and analytics layer, focused on building high-performance systems that process complex financial data at scale. Our platform handles large volumes of capital, positions, and holdings with strict requirements around accuracy, auditability, and performance, and we are investing heavily in scalability, reliability, and long-term architectural growth.
We are looking for a highly skilled Go (Golang) Developer to design and build large-scale financial calculation services that power our platform. This is not a typical web development role; this role is for someone who thrives in high-performance, data-intensive backend systems. You will play a key role in building and scaling a core calculation engine that supports portfolio analytics and financial modelling.
Key responsibilities- Design and develop high-performance services in Go (Golang)
- Build and optimise large-scale financial calculation engines
- Build systems that accurately process and reconcile high volumes of capital, positions, and holdings
- Architect systems for scalability, reliability, and low latency
- Work with complex, high-volume datasets and portfolio logic
- Collaborate with frontend/backend teams to integrate services
- Contribute to system design, performance tuning, and infrastructure decisions
- Strong commercial experience with Go (Golang)
- Proven experience working within a high-data environment (e.g. fintech or similar data-intensive industries)
- Experience building scalable backend systems
- Strong understanding of data processing, performance optimisation, and system design
- Experience designing and working with APIs
- Experience in financial systems or portfolio management platforms
- Familiarity with microservices architecture
- Knowledge of distributed systems and Go concurrency patterns
- Experience with cloud infrastructure (AWS, GCP, or similar)
- Ability to leverage AI tools to improve development workflows and efficiency
- Experience supporting integration with a PHP Laravel-based presentation layer
- Ability to help bridge backend calculation services with frontend delivery
- CRM-focused developers
- Generalist engineers without deep backend or data experience
- Backend-first engineer with experience in data-heavy systems
- Strong problem solver with a focus on performance and scale
- Comfortable working in complex, high-volume data environments
- Interested in leveraging modern tooling, including AI-assisted development
- Able to take ownership of critical system components
Why Join Delio
- Work on mission-critical financial infrastructure
- Solve complex scaling and data challenges
- Be part of a high-calibre engineering environment
- Opportunity to shape the architecture of a growing platform
- Competitive salary based on experience
- Hybrid working – based in or around Cardiff. We operate a hybrid working model with a minimum 3 days per week in the office - with Wednesday and Thursday being obligatory office days
- A friendly, supportive and innovative team culture
- Opportunities for professional growth and training
- 25 days holiday (plus bank holidays), increasing with length of service
- Extra day off for your birthday
- Private medical insurance and Death-in-service benefit
Senior Go Developer - Financial Systems in Cardiff employer: Delio Group
Delio is an exceptional employer that offers a dynamic and innovative work environment, particularly for those passionate about high-performance financial systems. With a strong focus on professional growth, employees benefit from a supportive team culture, competitive salaries, and a hybrid working model based in Cardiff, allowing for a balanced work-life integration. Join us to tackle complex data challenges and contribute to the architecture of a cutting-edge platform while enjoying generous holiday allowances and comprehensive health benefits.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Go Developer - Financial Systems in Cardiff
✨Tip Number 1
Network like a pro! Reach out to your connections in the fintech space and let them know you're on the lookout for opportunities. You never know who might have the inside scoop on a role that’s perfect for you.
✨Tip Number 2
Get your hands dirty with some projects! Build a small-scale financial calculation service or contribute to open-source projects using Go. This not only sharpens your skills but also gives you something tangible to show during interviews.
✨Tip Number 3
Prepare for technical interviews by brushing up on your Go knowledge and system design principles. Practice coding challenges that focus on performance optimisation and data processing 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 about their job search!
We think you need these skills to ace Senior Go Developer - Financial Systems in Cardiff
Some tips for your application 🫡
Tailor Your CV:Make sure your CV highlights your experience with Go (Golang) and any relevant financial systems. We want to see how your skills align with our needs, so don’t be shy about showcasing your backend expertise!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Tell us why you’re passionate about building high-performance systems and how your background in data-intensive environments makes you the perfect fit for this role.
Showcase Your Problem-Solving Skills:In your application, give examples of how you've tackled complex challenges in previous roles. We love candidates who can think critically and come up with innovative solutions, especially in high-volume data settings.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy!
How to prepare for a job interview at Delio Group
✨Know Your Go Inside Out
Make sure you brush up on your Go (Golang) skills before the interview. Be prepared to discuss your experience with building high-performance services and how you've tackled challenges in data-intensive environments. They’ll want to see that you can not only code but also architect scalable systems.
✨Showcase Your Problem-Solving Skills
Be ready to share specific examples of how you've solved complex problems in previous roles. Think about times when you optimised performance or handled large datasets. This is your chance to demonstrate your analytical thinking and how you approach challenges in a high-volume data environment.
✨Familiarise Yourself with Financial Systems
Since this role is focused on financial calculation services, it’s crucial to understand the basics of financial systems and portfolio management. Brush up on relevant terminology and concepts so you can speak confidently about how your skills align with their needs.
✨Prepare for Technical Questions
Expect technical questions that dive deep into system design, APIs, and concurrency patterns in Go. Practise explaining your thought process clearly and concisely. They’ll be looking for your ability to communicate complex ideas effectively, so don’t shy away from discussing your past projects.
