Senior .NET Developer (Fintech)

Posted 5 Days Ago
Be an Early Applicant
Hiring Remotely in Poland
Remote
Senior level
Artificial Intelligence • Fintech • Machine Learning • Software • App development • Conversational AI • Generative AI
Social Discovery Group (SDG) connects people across cultures online, making virtual intimacy the new normal
The Role
Develop and maintain backend payment-processing and back-office services, including reconciliation, payouts, fee calculation, settlements, and B2B dashboards. Design resilient microservice integrations and asynchronous workflows with reliability patterns such as retries, sagas, idempotency, and deduplication. Monitor performance and reliability, use AI agents to deliver and validate code, write tests, review code, and maintain technical specifications.
Summary Generated by Built In

Social Discovery Group (SDG) is a group of social discovery companies. SDG solves the problems of loneliness, isolation, and disconnection - transforming virtual intimacy into the new normal. SDG’s products redefine the way people interact and connect with one another.

Our portfolio includes social entertainment platforms designed to connect people online across different cultures and regions of the world.

We bring together a team of like-minded people and IT professionals who specialize in creating and developing globally impactful social discovery products. Our international team of digital nomads works remotely from all over the world.

We’re proud to be a two-time “Great Place to Work” winner (USA & Japan, 2024–2025) and a Top-5 Company for Work-From-Anywhere Jobs (FlexJobs, 2025).

We are looking for a Senior .NET Developer (Fintech).

Your main tasks will be:

  • Develop and maintain backend services for payment processing and the back office: reconciliation, payouts, fee calculation, settlements and the B2B client dashboard;
  • Build resilient integrations and asynchronous workflows (idempotency, outbox/inbox, sagas, retries, deduplication);
  • Meet performance and reliability targets (p95/p99 latency, SLA/SLO), set up monitoring and alerting;
  • Deliver tasks with AI agents, validate the generated code, add tests and fix defects;
  • Review code, keep specifications up to date and share knowledge with the team.

We expect from you:

  • 5+ years of commercial experience with C# and ASP.NET Core;
  • Experience designing microservices;
  • Hands-on experience with Azure, Docker, AKS, MS SQL Server, MongoDB and Cosmos DB;
  • Real experience delivering tasks with AI tools or agents from task definition to a working result. You understand every line you ship and can explain it;
  • Clean, maintainable code with tests;
  • Ownership of results and open communication when something goes wrong;
    Nice to have: payments or banking background, spec-driven development, product or startup experience, mentoring or technical leadership.

What do we offer:

  • REMOTE OPPORTUNITY to work full-time;
  • The initial pay level or pay range for this role will be shared with candidates during the recruitment process and before the commencement of employment;
  • Vacation 27 paid days per year from day one;
  • Paid sick leave;
  • Bonuses for recommending successful applicants for positions in the company;
  • Learning support. Access to language lessons on Preply and educational courses on Coursera and other platforms;
  • Wellbeing Wallet. After the integration period, you get up to €2,800 per year that can be spent flexibly on medical expenses, therapy, dentistry, pharmacy, fitness, sports activities and emotional wellbeing;
  • Workplace organization. The company provides all the necessary tech equipment and a budget of €1,000 for setting up your home office or renting a coworking space;
  • Family support. €1,000 gross for childbirth, marriage or bereavement, and an annual Child Support Benefit of up to €1,000 gross per child;
  • Long-term recognition. A bonus for team members after three years of continuous service.

Sounds good? Join us now!

Skills Required

  • 5+ years of commercial experience with C# and ASP.NET Core
  • Experience designing microservices
  • Hands-on experience with Azure, Docker, AKS, MS SQL Server, MongoDB, and Cosmos DB
  • Real experience delivering tasks with AI tools or agents from task definition through working implementation
  • Ability to write clean, maintainable code with tests
  • Payments or banking background
  • Experience with spec-driven development
  • Product or startup experience
  • Mentoring or technical leadership experience

Social Discovery Group Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Social Discovery Group and has not been reviewed or approved by Social Discovery Group.

  • Healthcare Strength — Health coverage is presented as a voluntary medical insurance program with options like dentistry, cancer coverage, telemedicine, psychological support, and discounted coverage for relatives. For those not eligible for corporate plans, an annual allowance toward health insurance or doctor’s fees is available.
  • Wellbeing & Lifestyle Benefits — Wellness-oriented perks include yoga, sports tournaments, a unified sports subscription, office massages, and remote-work support such as equipment and internet/coworking stipends. Feedback suggests mobility perks like work-from-anywhere and relocation assistance further enhance everyday flexibility.
  • Strong & Reliable Incentives — Bonuses are described as flexible and tied to outcomes and projects, with substantial referral rewards and recognition via a gamified gratitude system. Professional development funding and paid conferences add tangible performance-linked rewards.

Social Discovery Group Insights

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The Company
HQ: Sliema
Year Founded: 1991

What We Do

Social Discovery Group (SDG) is a group of social discovery companies. SDG solves the problem of loneliness, isolation, and disconnection - transforming virtual intimacy into the new normal. SDG products redefine the way people interact and connect with each other. Our portfolio includes social entertainment platforms designed to connect people online across different cultures in different parts of the world. We bring together a team of like-minded people and IT professionals specializing in the creation and development of globally impactful social discovery products. We’re proud to be a two-time “Great Place to Work” winner (USA & Japan, 2024–2025) and a Top-5 Company for Work-From-Anywhere Jobs (FlexJobs, 2025). Know someone who'd be a great fit at SDG? You could earn up to $5,000 for introducing them to us. 💰 Refer them --> https://socialdiscoverygroup.com/vacancies/referral-program

Why Work With Us

We infuse Passion into every project, driving innovation. Empowerment and Responsibility lets you own initiatives beyond your role, Result-based Evaluation rewards impact over hours. Integrity and Trust ensure transparency, Honesty and Feedback fuel growth, Tolerance of Failures turns setbacks into breakthroughs—unique in tech

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