Senior .NET Backend Engineer - Fintech, Remote

Jobgether; Ireland; Remote; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Fully remote work

27 paid vacation days per year

Paid sick leave

Performance-related referral bonuses

Learning and development support

Wellbeing Wallet up to €2,800/year

€1,000 home office budget

Family support (€1,000 gross)

Annual Child Support Benefit up to €1,

Long-term recognition bonus

Salary shared during recruitment

Job summary

Jobgether is partnering with a fintech-focused team in Ireland to hire a Senior .NET Developer. You will own backend services for payments and financial operations, building scalable microservices, and integrating with AI-assisted tooling.

The role emphasizes reliability, performance, and secure code in a fully remote environment. You will design resilient workflows, monitor systems, and contribute to technical decisions while maintaining documentation and collaborating with an international

Qualifications

• At least 5 years of commercial software development experience with C# and ASP.NET Core.
• Proven experience designing and developing microservices architectures.
• Hands-on experience with Microsoft Azure, Docker, and Azure Kubernetes Service (AKS).
• Practical experience with Microsoft SQL Server, MongoDB, and Cosmos DB.
• Demonstrated experience using AI-powered development tools or agents to deliver tasks from initial definition through to working implementation.
• Ability to understand, validate, explain, and take responsibility for every line of code delivered, including AI-generated code.
• Strong commitment to clean, maintainable code and automated testing.
• A strong sense of ownership, accountability, and reliability when managing technical responsibilities.
• Clear and open communication skills, particularly when addressing challenges, defects, or unexpected outcomes.

Responsibilities

• Develop and maintain backend services supporting payment processing and back-office operations, including reconciliation, payouts, fee calculations, settlements, and B2B client dashboards.
• Design and implement resilient integrations and asynchronous workflows using idempotency, outbox/inbox, sagas, retries, and deduplication.
• Build and optimize microservices to meet performance and reliability objectives, including p95/p99 latency targets and SLA/SLO requirements.
• Implement monitoring, alerting, and Operational practices to maintain service availability and quickly identify potential issues.
• Use AI-powered development tools and agents throughout the software delivery process, from task definition to implementation.
• Thoroughly review and validate AI-generated code, ensuring correctness, maintainability, security, and appropriate test coverage.
• Write clean, well-structured code and develop automated tests to support software quality and long-term maintainability.
• Participate in code reviews, maintain up-to-date technical specifications, and share knowledge and best practices with the engineering team.
• Take ownership of assigned deliverables, communicate openly about challenges, and proactively address defects or implementation issues.

Skills

C#

ASP.NET Core

Microservices

Azure

Docker

AKS

SQL Server

MongoDB

Cosmos DB

AI tools

Job description

Jobgether is partnering with a fintech-focused team in Ireland to hire a Senior .NET Developer. You will own backend services for payments and financial operations, building scalable microservices, and integrating with AI-assisted tooling.

The role emphasizes reliability, performance, and secure code in a fully remote environment. You will design resilient workflows, monitor systems, and contribute to technical decisions while maintaining documentation and collaborating with an international