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Ascendion

Dotnet Developer

Ascendion
Poland · Full-time · Mid-Senior

Join Us as a Senior .NET Full-Stack Developer!


About the Role

As a Senior developer you will be responsible for the ensuring the team deliver high quality software, using industry best practices for code management, testing and CI/CD. This is an exciting opportunity to build a new greenfield solution, working as part of a small team, to help the business improve their electronic trading capabilities within the fixed income space. The platform itself is built on top of AWS and makes use of many services within the AWS ecosystem.


Responsibilities

  • Take responsibility for the software delivery by ensuring quality and scope expectations are met.
  • Contribute and take ownership of the technical design and ensure all aspects of the system architecture are well documented.
  • Work closely with partner technology teams and to collaborate effectively.


Qualifications

  • Bachelor's degree in computer science / information technology or a related field, or substantial practical experience of software delivery at an advanced level.


Required Skills

  • Very deep understanding of .Net/.Net Core and Solid understanding of OO principles.
  • Experience in ASP.NET Core Web API and RESTful API techniques.
  • Solid understanding of and experience with multi-threading and asynchronous programming.
  • Familiar with SQL and NoSql databases.
  • Hands-on experience with containerisation solutions like Docker.
  • Experience designing and building api based service oriented or microservice architectures.
  • Diligent with automated testing i.e. Nunit/Moq/Cucumber etc.
  • Strong experience with middleware messaging services like Rabbit MQ, TIBCO, SignalR etc.
  • Solid experience with continuous integration and continuous delivery tools like Git, TeamCity etc.
  • Agile development/Software life cycle.


Preferred Skills

  • Fixed Income product knowledge.
  • Experience configuring continuous integration and continuous delivery tools.
  • An awareness of/understanding of one or more javascript single page application framework.
  • Experience using AWS platform.

Pay range and compensation package

  • Competitive economic package: UoP or B2B (open for market rates).
  • B2B rates: PLN 150 - 200/hour
  • Flexible working options.
  • Telecommuting opportunities.
  • Prime office location in Warsaw.
  • Top-notch computer and office equipment.
  • Opportunity to work on large-scale cloud-native platforms.
  • Exposure to modern technologies and enterprise engineering practices.


Equal Opportunity Statement

We are committed to diversity and inclusivity.


About Us:

Ascendion is a global, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and Europe. We are headquartered in New Jersey. We combine technology and talent to deliver tech debt relief, improve engineering productivity solutions, and accelerate time to value, driving our clients’ digital journeys with efficiency and velocity.

For more information, please go to www.ascendion.com

With Ascendion (www.ascendion.com), you:

  • Will get to work on numerous challenging and exciting projects across AI/Data, Automation, Cloud, and Product Engineering
  • Have strong chances of project extension or redeployment across clients

Can also refer someone you know — we have a referral policy in place.

Key Skills

Ranked by relevance

aws continuous integration continuous delivery cloud javascript nosql cicd git sql ai
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Posted
Mar 13, 2026
Type
Full-time
Level
Mid-Senior
Location
Warsaw
Company
Ascendion

Industries

IT Services IT Consulting

Categories

Engineering

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