.NET Software Architect – Fintech Modernization Role in Columbus
Career & Market Insight
Principal-level scope with real architectural ownership — this isn't a maintenance role. You'll lead a full monolith-to-MVC migration for a 60+ portfolio-company PE firm, which is substantial portfolio material for any senior engineer moving toward Staff or Principal Engineer tracks.
High-demand skill development:
- Legacy modernization (monolith-to-MVC) is among the most sought-after skills in enterprise .NET hiring.
- AI-augmented engineering (Claude Code, GitHub Copilot) is an emerging differentiator — hands-on fluency here is increasingly valued and relatively rare.
- Regulated fintech/PE domain experience adds a premium to your market value in financial services.
- Shift-left QA (Playwright, SonarQube) and Azure infrastructure deepen a well-rounded Principal profile.
Compensation context: No salary is listed, which is a yellow flag for a Principal-calibre role. Market rates for .NET Architects at this level in Western Europe range from €80k–€120k+. Candidates should benchmark carefully in negotiation.
Culture signals: Zartis is a consulting/staffing model — expect client-facing pressure and a "demanding client" is explicitly named. The 360° feedback and structured career development program suggest a mature internal culture for a consulting firm. The mentoring program and dedicated training time during the working week are genuine green flags for continuous learning.
Watch for: Consulting roles can lead to project hopping; clarify contract length and what happens post-project for long-term career planning.
.NET Software Architect
The Company and Our Mission
Zartis is a global AI transformation and technology consulting partner where talented engineers and technologists work on cutting-edge innovation. We partner with ambitious organizations to design, build, and scale technology solutions that deliver real impact.
Our teams bring deep expertise in AI-driven platforms, secure API architectures, and cloud-native engineering. You will work on meaningful projects that accelerate the adoption of advanced technologies — from strategy and discovery through to full product delivery — helping turn complex challenges into measurable outcomes.
With engineering hubs across EMEA and LATAM, and long-term partnerships in financial services, healthcare and life sciences, and energy and climate, we offer opportunities to work on projects that truly matter. Here, you will not just build technology — you will drive business impact and grow your career alongside industry leaders.
We are looking for a .NET Software Architect to work on a project in the Fintech Industry.
The Project
You will be part of a distributed team developing new technologies to solve real business problems for a global private equity firm managing 60+ portfolio companies, on a major platform rebuild — modernizing a core banking/reconciliation platform from a tightly-coupled .NET monolith into an MVC architecture (ASP.NET Core, Razor Pages, Telerik), migrating several hundred business rules onto a test-driven validation layer, and integrating with 15–20 remote databases on Azure.
We are looking for a Principal-calibre engineer with strong, current C#/.NET expertise, real experience taking a legacy monolith through a modern re-architecture, and the stakeholder-management maturity to communicate confidently and proactively with a demanding client. Hands-on fluency with AI-augmented, agentic development workflows (e.g. Claude Code) is expected, not just tool familiarity.
What You Will Do
Own end-to-end technical delivery — the ASP.NET Core/Razor Pages front end with Telerik components, and the underlying C#/MS SQL Server back end — within the core delivery team.
Lead the discovery, characterisation, testing and migration of business rules, currently split across stored procedures and application code, onto a reliable, test-driven validation layer as part of the platform rebuild.
Help define and drive the transition from a tightly-coupled monolith to a modern MVC architecture, including hardening the existing API layer toward a full REST implementation.
Design and build resilient integrations across 15–20 remote databases, working within the Azure App Configuration and Key Vault infrastructure.
Use Claude Code, GitHub Copilot and Zartis' Zcora instruction framework to structure and accelerate AI-assisted delivery with appropriate human review and validation.
Act as the primary technical point of contact for client stakeholders, bringing Principal-level communication, expectation-setting and delivery ownership.
Drive quality through the shift-left QA effort (Playwright automation, SonarQube quality gates, Three Amigos sessions) to reduce regression cycles.
What You Will Bring
Strong, current C#/.NET expertise: Azure, ASP.NET Core/MVC, Razor Pages, Telerik UI components and MS SQL Server.
Proven experience with legacy-to-modern migrations and monolith-to-MVC architecture, ideally on tightly-coupled, full-stack codebases.
A track record of strong stakeholder management and clear, proactive communication in senior or principal engineering roles.
Hands-on fluency with AI-augmented, agentic engineering workflows (Claude Code, GitHub Copilot or similar) — able to speak concretely about your own approach, not just tool familiarity.
Comfort operating in a regulated financial-services or private-equity environment.
Azure cloud infrastructure experience, particularly App Configuration and Key Vault.
Nice to Have
Exposure to shift-left QA practices — i.e. Playwright, SonarQube.
Experience with GitHub, including migrations away from Azure DevOps.
Prior experience in private equity, fund administration, or wider financial-services technology.
What We Offer
100% Remote Work
WFH Allowance: Monthly payment as financial support for remote working.
Career Growth: We have established a career development program accessible for all employees with a 360° feedback system that will help guide you in your career progression.
Training: You have time allocated during the week for tech training. Options include online courses (Pluralsight, Educative.io), English classes, books, conferences, and events.
Mentoring Program: You can become a mentor at Zartis, receive mentorship, or both.
Zartis Wellbeing Hub (Kara Connect): A platform providing sessions with a range of specialists, including mental health professionals, nutritionists, physiotherapists, fitness coaches, and professional webinars.
Multicultural Working Environment: We organize tech events, webinars, parties, and activities including online team-building games and contests.
Frequently Asked Questions
Is this role fully remote or are there on-site requirements?
What does the project involve on a day-to-day basis?
Is salary disclosed for this position?
What level of AI tooling experience is expected?
What career development support does Zartis provide?
