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senior

Backend Engineer

Yalantis
format:Hybridcompany:Product
c#.netpostgresqlawsoauthauth0
twiliostripepython
semantic dedup

Reposted 2× across DOU — deduped to one listing.

metahunt matched 2 postings of this exact role by semantic similarity, so you see it once instead of 2 times.

englishB2
experience5+ years
domainHealthTech
locationDnipro, Ukraine · Warsaw, Poland
> full description

We are looking for a Senior .NET Engineer to join a healthcare project and contribute to backend development under the guidance of a Tech Lead.

In this role, you will work on building and extending backend services, participate in integrating external systems, and contribute to developing scalable cloud-based solutions. You’ll collaborate closely with a cross-functional team and support the implementation of reliable and secure backend functionality within a healthcare domain.

Responsibilities:

  • Develop and maintain backend services using C# and .NET
  • Collaborate with Solution Architect, PM, QA, DevOps, and frontend engineers
  • Participate in implementation of cloud-based solutions on AWS
  • Work with relational databases (PostgreSQL)
  • Contribute to system integrations (authentication, third-party services)
  • Support development of scalable and maintainable backend architecture
  • Write clean, testable, and maintainable code

Qualifications & Skills:

  • 5+ years of commercial experience with C# and .NET
  • Hands-on experience with relational databases (PostgreSQL or similar)
  • Experience with AWS services (ECS, RDS, SQS, SNS) or building cloud-based solutions
  • Understanding of authentication and authorization flows (OAuth, Auth0 or similar IdP)
  • Basic understanding of microservices or distributed systems
  • Strong problem-solving skills and willingness to learn
  • Upper-Intermediate level of English or higher

Nice to Have:

  • Experience with Twilio, Stripe integrations
  • Experience with multi-tenant systems
  • Understanding of event-driven architecture
  • Experience with Python (data pipelines, crawlers)
  • Experience in healthcare domain

Our Benefits:

  • Professional growth: Individual development plan, mentorship, reimbursement for professional certifications and English lessons, access to professional courses in Corporate Learning Management System.
  • Community: Tech community and knowledge-sharing events, English speaking club, corporate library and book club, volunteering and charity initiatives.
  • Wellbeing: Medical insurance, regular medical check-ups, sport reimbursement, paid vacation and sick leave, mental health support and events.
  • Work environment: Fully-equipped offices, top-notch equipment, flexible work format, activities both in-office and online, Y-bucks and access to the Yalantis store.

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