Backend Engineer - C# and Dotnet

Finastra; Atlanta (GA); Hybrid; USD 110,000 - 150,000; Full time

Benefits offered by this job

Unlimited vacation

Hybrid working arrangements

Paid time off for voting

Bereavement leave

Sick leave

Job summary

Finastra is seeking a Back-End Engineer to design and implement robust backend services, APIs, and data processes. You will write clean, maintainable code and collaborate with cross-functional teams to support scalable applications.

Key responsibilities include building API layers, data access, and integration with enterprise systems while contributing to code reviews and engineering best practices. A hybrid work model and diverse benefits are offered.

Qualifications

• Build backend services with C#/.NET or TypeScript/Node.js in a scalable architecture.
• Strong understanding of REST APIs, data modeling, and server-side development.
• Experience integrating with third-party APIs and enterprise systems.

Responsibilities

• Design and implement backend services, APIs, and data access layers.
• Develop clean, well-tested, and maintainable code with modern frameworks such as C#/.NET and Next.js.
• Integrate backend services with databases, APIs, and enterprise systems.
• Contribute to code reviews, technical documentation, and engineering best practices.
• Collaborate with frontend, DevOps, and senior engineers to deliver end-to-end features.

Skills

C#/.NET

TypeScript/Node.js

REST APIs

Data modeling

Third-party APIs

OOP

Git/GitHub

React/Next.js

AI/LLM

Tools

Azure

Docker

Salesforce

Job description

Who are we?

At Finastra, we’re a global leader in financial services software, dedicated to expanding access to financial services and shaping what’s next for the industry. Our technology powers mission‑critical solutions across Lending, Payments and Universal Banking, supporting over 7,000 customers, including 80% of the world’s top 50 banks, in more than 110 countries.

What will you contribute?

We are seeking a Back-End Engineer to design and implement robust backend services, APIs, and processes. This role involves writing clean, maintainable code, collaborating with cross‑functional teams, and ensuring high‑quality backend architecture that supports scalable applications.

Responsibilities & Deliverables

• Design and implement backend services, APIs, and data access layers
• Develop clean, well‑tested, and maintainable code with modern frameworks such as C#/.NET and Next.js.
• Integrate backend services with databases, APIs, and enterprise systems
• Contribute to code reviews, technical documentation, and engineering best practices
• Collaborate with frontend, DevOps, and senior engineers to deliver end‑to‑end features

Required Skills & Experience

• Experience building backend services with C#/.NET, TypeScript/Node.js, or equivalent backend frameworks
• Solid understanding of REST APIs, data modeling, and server‑side application development
• Experience integrating with third‑party APIs and enterprise systems
• Strong grasp of object‑oriented programming and software design fundamentals
• Experience using Git/GitHub in a team‑based development environment
• Familiarity with modern web application architectures involving React, Next.js, and backend APIs
• Exposure and interest in developing AI‑powered or large language model‑based applications

Nice to Have

• Familiarity with cloud platforms such as Azure
• Experience with Salesforce integrations or other enterprise SaaS platforms
• Exposure to Docker and containerized application development
• Familiarity with automated testing and CI/CD practices

We are proud to offer a range of incentives to our employees worldwide. These benefits are available to everyone, regardless of grade, and reflect the values we stand for:

Flexibility: Enjoy unlimited vacation, subject to local regulations and business priorities. Benefit from hybrid working arrangements and inclusive policies such as paid time off for voting, bereavement, and sick leave.

Well‑being: Access confidential one‑to‑one support through our Employee Assistance Program, connect with our network of Wellbeing Champions and Gather Groups, and take part in monthly events and initiatives designed to help you thrive—inside and outside of work.

Health & Financial Security: Medical, life and disability insurance, retirement plans, lifestyle, and other benefits.*

Sustainability: Paid time off for volunteering and donation‑matching opportunities to support causes that matter to you.

Inclusion: Get involved in our inclusion communities, such as Count Me In, Culture@Finastra, Proud@Finastra, Disabilities@Finastra, and Women@Finastra—open to everyone who wants to participate and contribute.

Career Development: Access online learning and accredited courses through our Skills & Career Navigator tool.

Recognition: Take part in our global recognition program, Finastra Celebrates, and share your voice through regular employee surveys that help shape our culture and ways of working.

*Specific benefits may vary by location.

At Finastra, each individual is unique—bringing their own ideas, perspectives, cultural backgrounds, and experiences. We learn from one another, value what makes us different, and create an environment where everyone feels included, supported, and able to be their authentic selves.

Be unique. Be exceptional. Help us make a difference at Finastra.

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.