Margo Group
Margo Group3mo ago
PLN 100–110/yr

Regular .NET Developer (Card Payment Systems)

Warsaw,WarsawRemotePermanent contract & B2Bmid
Backend Engineering.Net DeveloperSoftware Engineering
4 views0 saves0 applied
Apply Now

Quick Summary

Overview

About the role We are looking for a Regular .NET Developer to join a team responsible for developing and maintaining core card payment systems - from transaction authorization and settlement to integrations with external payment services.

Key Responsibilities

- Develop and maintain .NET applications in card payment domain - Design and implement new functionalities according to business and regulatory requirements - Integrate systems with external services (REST, SOAP, messaging queues) - Optimize…

Requirements Summary

- Experience in card payments / payment processing domain - Knowledge of Docker / Kubernetes - Experience working on high-availability or complex distributed systems

Technical Tools
angularcsharpdockerkubernetessqlagileci-cdcode-reviewdistributed-systemsdocumentationsql-optimization
About the role
We are looking for a Regular .NET Developer to join a team responsible for developing and maintaining core card payment systems - from transaction authorization and settlement to integrations with external payment services.
The systems process hundreds of thousands of transactions daily, so performance, availability and security are key priorities.
Work model: Remote-first with scheduled on-site team meetings (2 days per month in Warsaw).
 
Responsibilities
- Develop and maintain .NET applications in card payment domain
- Design and implement new functionalities according to business and regulatory requirements
- Integrate systems with external services (REST, SOAP, messaging queues)
- Optimize performance, availability and security of applications
- Cooperate with Analysts, Architects and QA in Agile/Scrum teams
- Participate in SIT/UAT testing, code reviews and preparation of technical documentation
 
Required skills
- Commercial experience with C# and .NET (Framework / Core)
- Experience with ASP.NET Core, Angular and WebAPI
- Knowledge of Entity Framework, LINQ, Dapper
- Experience with SQL Server (T-SQL) and query optimization
- Knowledge of SOLID principles and design patterns
- Experience writing unit tests (xUnit / NUnit)
- Experience with system integrations (REST, SOAP, JSON, XML)
- Experience working in Agile environment
- Knowledge of Git, CI/CD and TeamCity
 
Language requirements
- Polish: native or C2 level (required)
- English: professional level enabling work with technical documentation
 
Nice to have
- Experience in card payments / payment processing domain
- Knowledge of Docker / Kubernetes
- Experience working on high-availability or complex distributed systems
 

Location & Eligibility

Where is the job
Worldwide
Fully remote, anywhere in the world
Who can apply
Same as job location
Listed under
Worldwide

Listing Details

Posted
January 23, 2026
First seen
March 26, 2026
Last seen
May 12, 2026

Posting Health

Days active
46
Repost count
0
Trust Level
49%
Scored at
May 12, 2026

Signal breakdown

freshnesssource trustcontent trustemployer trust
Apply for this position
Margo Group
Margo Group
lever
Employees
30
Founded
2006
Domain
margocare.com
Jobs
View 83 jobs
View company profile

4 other jobs at Margo Group

View all →

Explore open roles at Margo Group.

Margo Group
IT Project Lead – Oracle Implementation
EUR 850–1100
Permanent contract & B2BMargo Group
AI Engineer - Spécialiste AI4Code & Agents IA (H/F)
EUR 50000–80000
Permanent contractMargo Group
Business Process Owner — Sales (BizOps)
Permanent contract & B2BMargo Group
Business Process Owner — Finance (O2C Ops)
Permanent contract & B2B

Similar .Net Developer jobs

View all →
GroweGroweRemote
Senior .Net Developer
Remote
C
CiandtRemote
[Job- 28496] .Net Developer, Brazil
HomeofficeRemote
V
Vmlenterprisesolutions
Senior .Net Developer
E
Examplecorpsandbox
.Net Developer
DeptDept
Senior .NET Developer with CMS experience
IrisIris
Senior .NET Developer | Backend and AI | In Office Required - Boston, MA
$120k–$130k/yr

Browse Similar Jobs

Software Engineer9.7kSolutions Architect555Java Developer229Full Stack Developer158Salesforce Developer123Embedded Software Engineer114Laravel Developer112Security Software Engineer104Python Developer79Application Developer77Firmware Engineer65Build Engineer63Search Engineer61Cloud Platform Software Engineer49Low-Code Developer49C++ Developer44Php Developer41Robotics Software Engineer40Data Platform Software Engineer39Wordpress Developer38
Newsletter

Stay ahead of the market

Get the latest job openings, salary trends, and hiring insights delivered to your inbox every week.

A
B
C
D
Join 12,000+ marketers

No spam. Unsubscribe at any time.

Margo GroupRegular .NET Developer (Card Payment Systems)PLN 100–110
Apply Now