.NET developer (Sizing team)

We are seeking an experienced Senior .NET developer to join our Sizing team. Sizing is a cutting-edge platform designed for portfolio management, enabling business users to adjust portfolio structures to meet specific metrics, simulate trading scenarios and generate comprehensive risk reports.

Sizing is a high-performance system that allows business users to:
- adjust portfolio structures to meet specific metrics,
- simulate trading scenarios (opening/closing positions),
- generate comprehensive risk reports in near real time.

Each user action may trigger 300,000–500,000 calculations, so backend performance, concurrency, and scalability are critical. The team is deeply focused on building a fast, resilient, and responsive backend that performs reliably under heavy computational load.

This is an active product development role, not maintenance or support. You will work on evolving the platform, integrating new functionality, and modernizing existing solutions.

We need a developer who is capable in:

• truly knows OOP, design patterns, SOLID, KISS, DRY, YAGNI;

• the understanding of how to effectively utilize CPU and RAM resources;

• experience in multithreading, resolving race conditions and synchronization challenges;

• keen to get deep into business logic and domain specific knowledge;

• (micro) services, cloud architecture;

• contributing to CI/CD improvements.  

Requirements & technologies:

• .Net 9.0

• Multithreading and async/await

• Microservices, k8s base

• HTTP - REST, Swagger 

• Testing - xUnit, e2e tests

• SQL - PostgreSQL, EF Core

• Messaging (Kafka)

Nice to have

• AWS (MSK, EKS, DynamoDB, AppConfig, Elasticache, CloudFormation)

• Oracle

• gRPC

• JWT and OAuth

Benefits

• Flexible work setup: remote work or a hybrid model.

• Full health insurance coverage for those based in Cyprus or Poland.

• 50% coverage of health insurance for spouses and children in Cyprus or Poland.

• 24 days of paid vacation.

• 10 days of paid sick leave.

• 50% reimbursement for professional training, education, conferences.

• Work alongside a highly professional team.

• Engaging teambuilding events and activities.

In case of relocation to Poland or Cyprus, we offer:

• Flight tickets, accommodation rent for 1st month for our relocated employee and his/her official family.

• Support in visa application and issue process, entry permit and residence permit processing.