.NET Engineer Middle

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a .NET Engineer Middle based in France.

Join a remote engineering team building scalable, high-traffic technology for a fast-moving fintech environment.

You will design, develop, and maintain reliable backend solutions using C# and modern .NET technologies.

The role combines hands-on software development with distributed systems, data-intensive workloads, APIs, and cloud-native infrastructure.

Your work will directly contribute to products where technology, data, performance, and reliability are critical to the user experience.

You will collaborate with engineers and cross-functional stakeholders to turn complex business requirements into clean and maintainable solutions.

There is also significant scope to improve observability, engineering practices, and development efficiency through modern tools and AI-assisted workflows.

This opportunity is well suited to a mid-level engineer who enjoys solving challenging technical problems and working with modern backend technologies.

Accountabilities

• Design, develop, and maintain scalable solutions for high-traffic systems using C# and modern .NET.
• Analyze business and technical requirements and translate them into clean, maintainable components aligned with established architectural principles.
• Collaborate with engineers and cross-functional stakeholders to design, implement, and deliver new product features.
• Write clean, testable, maintainable, and well-documented code supported by appropriate unit, integration, and load testing.
• Work with asynchronous programming, multithreading, distributed systems, and event-driven architectures to build reliable services.
• Investigate production incidents and improve system observability through effective use of logs, metrics, traces, and business data.
• Contribute to performance optimization, scalability improvements, and overall system reliability.
• Work with APIs, relational databases, caching systems, and messaging technologies as part of the broader technology ecosystem.
• Research and evaluate new technologies, tools, AI capabilities, and engineering practices that can improve product quality and development efficiency.
• Contribute to continuous integration and delivery processes and support reliable software deployment practices.
• Participate actively in an Agile development environment, collaborating with teammates to continuously improve products and engineering workflows.

Requirements

• 3+ years of commercial software development experience using C# and modern .NET.
• Strong understanding of object-oriented programming, design patterns, data structures, and algorithms.
• Hands-on experience with multithreading and asynchronous programming.
• Proven experience building and operating software in production environments.
• Familiarity with distributed systems and event-driven architectures, including message brokers such as RabbitMQ or Apache Kafka.
• Understanding of scalability and reliability principles, with some practical exposure to performance tuning.
• Solid experience with relational databases, preferably PostgreSQL; familiarity with NoSQL databases is an advantage.
• Experience developing and consuming APIs using technologies such as REST, GraphQL, or gRPC.
• Hands-on experience with Entity Framework.
• Practical experience with Docker and a basic understanding of Kubernetes concepts.
• Experience writing and maintaining unit and integration tests.
• Experience with continuous integration and delivery tools, preferably GitLab and ArgoCD.
• Comfortable working in a fast-paced Agile environment and collaborating effectively with distributed teams.
• Understanding of modern AI capabilities and limitations, with hands-on experience using AI-powered coding assistants or agents.
• English proficiency at B1 level or higher, sufficient for technical discussions and documentation.
• Experience with ClickHouse or other analytical databases for large-scale data processing is a plus.
• Experience with AWS or another major cloud platform is a plus.
• Familiarity with Infrastructure as Code tools such as Terraform is advantageous.
• Experience in fintech, trading, or other high-load environments is a strong plus.

Benefits

• Fully remote working opportunity.
• Medical insurance.
• 20 paid vacation days per year.
• 10 paid sick leave days per year.
• Paid public holidays according to the applicable company holiday calendar.
• Professional education and development budget.
• Language learning budget.
• Wellness budget covering eligible expenses such as gym memberships and sports equipment.
• Tax expense coverage and expert support for eligible private entrepreneurs in Ukraine.
• Opportunity to work with modern technologies including .NET, PostgreSQL, Redis, ClickHouse, RabbitMQ, Kafka, Docker, Kubernetes, AWS, and cloud-native tooling.
• Exposure to high-traffic, data-intensive fintech systems and challenging engineering problems.
• Opportunity to use modern AI-powered development tools and contribute to continuous improvement of engineering practices.