Senior.NET Developer

On-siteSalary not specified
Denmark · United States · Lithuania · Wrocław, Poland

Tech Stack

JWTPostgreSQL.NETC#OAuth2OpenTelemetryAWS Polly

Job Description, Responsibilities & Requirements

About the Position

We are seeking a Senior.NET Developer to join our team for industrial digitalization projects. DICEUS is a product company focused on building innovative SaaS solutions for the global insurance and financial services markets. Our mission is to modernize how insurers, brokers, MGAs, and other financial players operate through intelligent underwriting, seamless policy management, and digital engagement platforms.

Responsibilities

  • Implement a reusable synchronization platform with a modular connector approach.
  • Develop an independent DAP middleware service with an isolated Polarion connector module.
  • Introduce robust queuing mechanisms using PostgreSQL to prevent message loss and support asynchronous processing.
  • Implement idempotent message processing and retry strategies to guarantee consistency under failure conditions.
  • Improve system resilience using fault-handling patterns (e.g., Polly) and ensure graceful degradation.
  • Maintain and extend synchronization logic across ~40 mapped fields.
  • Align solution architecture with evolving DAP (Data/Application Platform) middleware strategy.
  • Ensure compatibility with Polarion X and cloud-oriented deployment models.
  • Optimize performance and scalability of.NET Worker Services handling high-throughput integration workloads.
  • Implement structured logging (Serilog) and distributed tracing/monitoring (OpenTelemetry).
  • Contribute to secure integration design using JWT/OAuth2 authentication mechanisms.
  • Collaborate with AI, backend, and platform teams for seamless integration.
  • Develop automated tests (unit + integration).
  • Support packaging and deployment processes (MSI installer, Windows Server environments).
  • Participate in architecture discussions, code reviews, and continuous improvement initiatives.

Requirements

  • 5+ years in.NET/C# development.
  • Experience with .NET Worker Services or background services architecture.
  • Expertise in building reliable distributed systems (messaging, retries, idempotency).
  • Experience with PostgreSQL, including designing queue-based processing patterns.
  • Experience with Entity Framework Core and performance tuning.
  • Experience implementing resilience patterns (e.g., Polly or equivalent frameworks).
  • Familiarity with observability tools (OpenTelemetry) and structured logging frameworks (Serilog).
  • Strong understanding of RESTful integrations using HttpClientFactory and hosting services with Kestrel.
  • Experience with authentication/authorization standards (OAuth2, JWT).
  • Knowledge of dependency injection patterns (Microsoft.Extensions.DependencyInjection).
  • Experience working with Windows Server environments and deployment packaging (MSI or similar).
  • Testing practices using xUnit, Moq, or similar frameworks.
  • Problem-solving skills with a focus on reliability, scalability, and maintainability.

We Offer

  • Equipment for work
  • Paid vacation (18 business days) and Statutory Holidays
  • Paid sick leave (10 business days)
  • Non-paid days off (10 business days)
  • Professional growth and development opportunities
  • Free English lessons

About the Company

DICEUS is a product company focused on building innovative SaaS solutions for the global insurance and financial services markets. Our mission is to modernize how insurers, brokers, MGAs, and other financial players operate through intelligent underwriting, seamless policy management, and digital engagement platforms. Since 2011, we have accomplished more than 150 projects, helping SMBs and enterprises overcome business challenges with the right technology solutions.

Locations

  • USA (Headquarters)

    • Wilmington, Delaware
    • Phone: +19293091005
    • Address: 2810 N Church St, Ste 94987, Wilmington, Delaware 19802-4447
  • Denmark

    • Copenhagen
    • Phone: +4566339213
    • Address: Tuborg Havnepark 7, 2900 Hellerup
  • Poland

    • Wrocław
    • Phone: +48573568229
    • Address: ul. Księcia Witolda, nr 49, lok. 15, 50-202 Wrocław
  • Lithuania

    • Vilnius
    • Phone: +37069198546
    • Address: Konstitucijos ave.7, 6th floor, LT-09308
  • Faroe Islands

    • Tórshavn
    • Phone: +298201515
    • Address: Smærugøta 9A, FO-100
  • Austria

    • Vienna
    • Phone: +4366475535405
    • Address: Handelskai 92 - Rivergate - 1200
  • United Arab Emirates

    • Dubai
    • Phone: +4366475535405
    • Address: Emarat Atrium, 423 Al Wasl Area, P.O. Box 112344
  • Jordan

    • Amman
    • Phone: +962787500100
    • Address: Swafeya, Waklat St. 2, Office 302

Job Details

Company name:
Diceus
Location:
Denmark · United States · Lithuania · Wrocław, Poland
Work Mode:
On-site
Posted on TheJob:
Jul 17, 2026
Last checked:
Jul 17, 2026
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