Job Url: https://newfts.bamboohr.com/careers/174

Job Description: About us

Are you passionate about FinTech and ready to make a tangible impact in a dynamic company where your decisions shape the future? Altery could be the next chapter in your professional journey!


We are looking for a Senior .NET Developer to build and optimize backend systems for card transaction processing. You will work on core platforms handling authorization, clearing, settlement, and card lifecycle management, ensuring high performance, reliability, and scalability.




Working hours from 9-6 UK time zone

 Does this sound like a fit? Join us and help shape the future of financial services!  



What you'll be doing

Develop and maintain .NET backend services for card transaction processing (issuing, acquiring, or payment networks).
Design and implement high-throughput REST APIs REST for card operations.
Optimize database performance (SQL/NoSQL) for transaction-heavy workloads.
Implement idempotency, retry logic, and reconciliation features for fault-tolerant processing.
Collaborate with issuing banks, payment networks (Visa/Mastercard), or third-party processors.
Follow PCI DSS compliance guidelines in code and infrastructure.
Participate in incident resolution and system monitoring for card transaction flows.



What You’ll Bring To Us

3+ years of backend development with .NET (C#).
Familiarity with Docker and Kubernetes concepts (deployments, scaling).
Ability to work in high-availability systems (logging, alerting, observability).
Understanding of CI/CD pipelines (GitLab, Teamcity).
Experience with SQL/NoSQL databases (SQL Server, PostgreSQL, MongoDB) and optimized query design.
Fluency in English.
Experience with Fintech or digital start-ups is a big plus
Experience with AI is a big plus


What we offer

Team and our Product: We are team players and we are passionate about our
product and understand what we aim to achieve and the impact it will make.
Growth Opportunities: You can Influence and shape our story while advancing your career.
Flexibility: We always listen to our people and can be flexible with arrangements.
Hybrid or Remote Working: We don't expect you to be in the office every day.
Local Market Perks: Enjoy insurance coverage, local perks, and beautiful offices.



Why to join us
We may not be perfect, but our strength lies in our resilience. Facing challenges with our expertise, positive attitude, and a supportive environment where everyone relies on one another gives us confidence in what we do. We empower our people to make decisions, explore, and experiment — micromanagement isn’t our style. We reward those who take on additional responsibilities and go the extra mile.


We are proud of how diverse and unique we are. We thrive on diverse