Finastra (Misys International Banking Systems Limited)

Senior Software Engineer - C# AND Dotnet

Finance & Insurance
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of software development experience in architecture and implementation
  • Expertise in C#/.NET and Angular for full-stack development
  • Proven experience with RESTful APIs and event-driven systems
  • Strong knowledge of secure coding practices and automated testing
  • Experience with Entity Framework Core and Azure cloud services
  • Familiarity with CI/CD pipelines and DevOps tooling
  • Financial services or regulated industry experience is preferred

Responsibilities

  • Design and build production-grade services and features for the lending platform
  • Make technical decisions balancing speed of delivery with system maintainability
  • Develop and maintain RESTful APIs and event-driven integrations
  • Write clean, secure code and enforce coding standards during reviews
  • Collaborate with product management, UX design, and quality engineering
  • Participate in architectural discussions and design reviews
  • Mentor junior engineers and facilitate knowledge sharing

Benefits

  • Engage in AI-native development to define standards for modern software
  • Have significant architectural influence in a complex production environment
  • Experience true system ownership beyond simple task execution
  • Directly impact lending operations with meaningful regulatory implications
Full Job Description
What will you contribute?

The Senior Software Engineer designs, builds, and evolves production systems across Finastra's lending platform-a cloud-native, Azure-hosted ecosystem serving lending origination, underwriting, compliance, and servicing workflows. This is a system-ownership role: you are responsible for the quality, scalability, and operational readiness of the software you deliver, not just the code you write.

AI-assisted development is the standard way of working on this team. You will be expected to use AI tooling daily to accelerate delivery while maintaining the engineering rigor required of enterprise financial software.

Responsibilities & Deliverables:
  • Design and implement production-grade services and UI features across the lending platform
  • Own technical decisions that balance delivery speed with long-term system health and maintainability
  • Build and maintain RESTful APIs, background services, and event-driven integrations.
  • Write clean, secure, and testable code; participate in code reviews enforcing SOLID principles, async/await correctness, and EF Core best practices
  • Collaborate closely with product management, UX design, and quality engineering from concept through delivery
  • Contribute to architectural discussions, design reviews, and technical documentation including ADRs
  • Mentor other engineers and raise the technical bar through code review and knowledge sharing
  • Other duties and projects as assigned


Technical Environment:
  • Back-end: C#/.NET (ASP.NET Core, Entity Framework Core), .NET 10/.NET4.8, RESTful API design, WCF
  • Front-end: Angular, TypeScript, Angular Material, MVC
  • Cloud & Infrastructure: Azure (App Service, App Insights, Redis, Azure SQL, Docker, Azure AD), Kubernetes
  • Data: SQL Server, LINQ, EF Core
  • DevOps & Tooling: CI/CD pipelines, PowerShell, Git


Required Experience:
  • Demonstrated professional software development experience including both architecture and implementation
  • Strong proficiency in C#/.NET and Angular for full-stack development
  • Hands-on experience designing and consuming RESTful APIs and distributed, event-driven systems
  • Deep understanding of secure coding practices, automated testing strategies, and CI/CD pipelines
  • Experience with Entity Framework Core including query optimization, change tracking, and migration management
  • Working knowledge of Azure cloud services
  • Experience in code review as both author and reviewer, with a focus on quality, security, and maintainability
  • Financial services or regulated-industry experience preferred


AI Fluency Expectations

This role requires daily, hands-on use of AI-assisted engineering. You are expected to:
  • Use GitHub Copilot (IDE and CLI) as a default part of your development workflow
  • Author and maintain structured context files (PRDs, design docs) that guide AI agents toward accurate output
  • Orchestrate AI agents to generate code, scaffold tests, review pull requests, and identify defects
  • Decompose complex work into planning and execution steps that AI can accelerate
  • Exercise strong engineering judgment over all AI-generated output-AI is treated as a junior collaborator whose work you guide, review, and refine
  • Embed AI into project delivery to drive productivity, automate routine activities, strengthen decision quality through trusted data, and deliver continuous process improvement while applying appropriate human judgement.


Why This Role
  • AI-native development is the standard, not an experiment-you will help define how modern software is built at enterprise scale
  • Real architectural influence on a complex, production platform with legacy bridges, multi-service Azure infrastructure, and third-party integrations
  • Engineers are trusted with system ownership, not just ticket execution
  • Your work directly supports lending operations that serve real customers and carry real regulatory weight

Applicants for this position need to be located in posted location or their immediate surrounding areas. Due to the requirements of this position, this job posting is not available for, and Finastra will not be considering any applicants who currently reside in New York City or California.

About Finastra (Misys International Banking Systems Limited)

Finastra is a financial technology company that provides software solutions to financial institutions. The company was formed in 2017 through the merger of Misys and D+H. Finastra has over 10,000 employees and operates in over 130 countries. The company's products are used by banks, credit unions, and other financial institutions to manage their operations, including lending, payments, and treasury management. Finastra is headquartered in London, UK.
Learn more about Finastra (Misys International Banking Systems Limited)
Size
10,000 employees
Industry

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