Who are we

At Frontiers, our purpose is simple yet ambitious: to make science open. We believe open science empowers the global scientific community to accelerate discovery and develop the solutions needed for healthy lives on a healthy planet.

We are one of the world's largest and most influential open-access research publishers. Every article we publish is peer-reviewed and quality-certified, ensuring research is accessible to everyone, everywhere. To date, Frontiers research has been viewed over 4 billion times, demonstrating the real-world impact of science without barriers.

Joining Frontiers means being part of a global, mission-driven organization at the intersection of science, technology, and innovation - working alongside passionate colleagues who care deeply about advancing knowledge for the benefit of society.

To learn more about our impact and culture, please watch this video

About the Role:

We are looking for an enthusiastic .NET Engineer to join our team in evolving Frontiers' publishing platform. The platform is large and complex, combining both modern and legacy technologies. This role involves maintaining and improving existing systems built with older technologies while contributing to the gradual transition toward a more modern and scalable architecture.

You will work across the stack, developing and maintaining features using .NET, Vue.js, and other technologies. As part of this transformation, you'll help rebuild legacy components with modern solutions, ensuring better performance, maintainability, and integration across the platform.

A strong proficiency in SQL, particularly with SQL Server, is crucial for this role, as you will work on optimizing database performance, troubleshooting complex queries, and ensuring data integrity.

Your focus on best practices, collaboration, and continuous improvement will be essential in driving the platform's success. If you enjoy working with both existing and new technologies in a dynamic environment, we'd love to hear from you!

Key Responsibilities:

• Design, develop, and maintain scalable, high-performance web applications using .NET and Vue.js.
• Enhance and support existing solutions built with older versions of .NET and Vue.js.
• Troubleshoot and optimize database performance, including query optimization, indexing strategies, and transaction management in SQL Server and MongoDB.
• Collaborate with product managers, architects, and other cross-functional teams to gather requirements, assess technical feasibility, and determine optimal implementation strategies.
• Collaborate within a multinational, cross-functional team to deliver software solutions aligned with business needs.
• Write clean, maintainable, and efficient code while adhering to best practices.
• Ensure the quality of the delivered solutions.
• Optimize applications for performance, scalability, and responsiveness.
• Troubleshoot and resolve complex technical challenges.
• Conduct code reviews and mentor junior engineers.
• Willingness to learn, flexible approach, and staying current with emerging trends in IT to maintain an up-to-date technology stack.

Requirements

• 4+ years of professional backend development experience

• Strong experience building production services with .NET (modern .NET / .NET Core)

• Build and maintain backend services and APIs for our products

• Design and implement RESTful APIs (and contribute to API standards/versioning/documentation)

• Work with SQL databases: write efficient queries, design schemas, optimize performance

• Collaborate with frontend, QA, DevOps, and product teams

• Participate in code reviews, improve code quality, and help with troubleshooting/incident resolution

• Contribute to technical improvements (testing, performance, observability, maintainability)

Must-have technical Skills:

• C# and .NET (modern up to .NET 10) - strong hands-on experience

• REST APIs - design, implementation, authentication/authorization basics

• SQL / TSQL - 2+ years practical experience (queries, indexes, performance)

• Comfortable with Git and code review workflow

• Understanding of clean code principles (SOLID, maintainable architecture)

Nice-to-Have Skills:

• Experience with ORMs (Entity Framework or similar)

• .NET Framework (Legacy platforms such as .NET Framework 4.7 or .NET Core)

• GraphQL (building or consuming APIs)

• MongoDB

• Elasticsearch

• Rabbit MQ or similar queuing system

• Docker / containers

• Hangfire or background job processing

• Observability tools (e.g., New Relic or similar)

• Agile tooling (e.g., Jira)

• Basic frontend understanding (HTML/CSS/JavaScript) for debugging/integration

• AI-assisted development tools (Cursor, etc.) - optional

Soft Skills:

• Team player; collaborates well across roles

• Comfortable giving and receiving constructive feedback (code reviews)

• Proactive learner; adapts to new tools and requirements
• English communication: can clearly explain technical ideas in writing and calls (doesn't need to be perfect)
  

Benefits

• We prioritise office presence and emphasise in-person collaboration, but also offer appropriate adjustments where needed, in line with company policy
• Extra wellbeing days on top of your annual leave allowance
• Up to 3 paid volunteering days each year
• 24/7 confidential Employee Assistance Programme (wellbeing, mental health, legal & financial support)
• Learning & development support via the Frontiers Learning Hub
• Competitive local benefits country dependent (e.g. healthcare and pension/retirement provision)

Frontiers actively embraces diversity and is a safe and welcoming workplace. Recruitment is free from discrimination - including based on race, national or ethnic origin, age, religion, disability, sex, gender identity or sexual orientation. With employees from more than 50 different nations, our diversity creates vibrant teams and constantly challenges us to appreciate multiple perspectives.