---
title: "Senior .Net Engineer"
company: "N-iX"
company_url: "https://www.remjobs.works/companies/n-ix"
url: "https://www.remjobs.works/job/n-ix-senior-net-engineer-8246ba43-4bfa-4546-9d85-530bdfb3ccb5"
apply_url: "https://careers.n-ix.com/jobs/4977588101?gh_jid=4977588101"
workplace: onsite
location: "Europe"
employment_type: unspecified
seniority: senior
role: software-engineering
region: europe
skills: ["aws", "azure", "csharp"]
date_posted: 2026-09-17T14:50:20.000Z
first_seen_by_remjobs: 2026-09-19T22:11:55.143Z
---

# Senior .Net Engineer

**N-iX** · Europe

Apply: https://careers.n-ix.com/jobs/4977588101?gh_jid=4977588101

## About the role

#### Role Overview

We are looking for a Senior .NET Engineer to work on migrating a client-facing e-commerce/store application's payment processing from its current gateway to a new payment provider.

#### Key Responsibilities

- Design and implement an abstraction layer that decouples the application from a single payment provider, enabling multiple providers to operate in parallel.

- Implement the integration with the new payment provider, including the card-capture and payment/refund flows, in a way that minimizes the application's compliance exposure.

- Collaborate closely with a small delivery team and client-side stakeholders where ownership or documentation is incomplete.

#### Requirements & Qualifications

- Experience: 6+ years of professional .NET development on large production systems; brownfield / legacy modernization experience is mandatory — this is not a greenfield role.

- Core stack (Must-Have): expert C# and ASP.NET (MVC, Web API, Razor Pages); hands-on with both .NET Framework 4.5.x-era code and .NET 6+ migrations; EF / EF Core.

- Security mindset: practical experience remediating security findings (OWASP classes, secrets handling, crypto usage) in existing code; PCI / payments / fintech exposure is a strong plus.

- Nice-to-Haves: Azure PaaS (App Services, Functions, Service Bus, Cosmos DB); AWS (Lambda, S3, SNS/SQS); Azure AD B2C; Blazor; SignalR; Telerik / Kendo UI.

- English: fluent written and spoken English (B2+) for documentation, evidence packages and client calls.
**We offer*:**

- Flexible working format - remote, office-based or flexible

- A competitive salary and good compensation package

- Personalized career growth

- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

- Active tech communities with regular knowledge sharing

- Education reimbursement

- Memorable anniversary presents

- Corporate events and team buildings

- Other location-specific benefits

*not applicable for freelancers

---

Source: N-iX's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/n-ix-senior-net-engineer-8246ba43-4bfa-4546-9d85-530bdfb3ccb5