Senior .NET Engineer

As a Senior .NET Engineer, you'll become a part of a cross-functional development team engineering experiences of tomorrow.

Our client is a fast-growing, profitable, and dynamic global payments company serving thousands of corporates and millions of users in over 190 countries. The R&D organization consists of nearly 500 professionals operating under SCRUM methodology. Their systems leverage Microsoft and open-source technologies to provide high-quality, secure global payment solutions.

Responsibilities:

• Advanced Development: Lead back-end development using microservices architecture to meet complex business needs
• Architecture & Design: Drive decision-making in application architecture, solution development, and lead code reviews
• SDLC Leadership: Take full ownership of the software development life cycle (SDLC), ensuring high coding standards and performant code throughout
• Testing Excellence: Design and implement comprehensive test suites (unit, integration, functional) with a strong focus on highly testable and automatable code
• Collaboration: Communicate effectively with PMs, Architects, and stakeholders to deliver product roadmaps and planning
• Mentorship: Supervise others and make decisions that impact project phases and teamwork assignments, * Care: your mental and physical health is our priority. We ensure comprehensive company-paid medical insurance and 4 additional undocumented sick leave days
• Tailored education path: boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy license, language courses and company-paid certifications
• Growth environment: share your experience and level up your expertise with a community of skilled professionals, locally and globally
• Flexibility: Own your schedule - you are the one to decide when to start your working day. Just don't miss your regular team stand-up. We are there to support your work-life balance and provide 23 vacation days & short Fridays
• Opportunities: we value our specialists and always find the best options for them. Our Internal Mobility Program helps change a project if needed to help you grow, excel professionally and fulfill your potential
• Global impact: work on large-scale projects that redefine industries with international and fast-growing clients
• Welcoming environment: feel empowered with a friendly team, open-door policy, informal atmosphere within the company and regular team-building events

• Experience: 5+ years as a server-side developer (C#, .NET, REST Web API), with expertise from the database to the UI
• Architecture: Strong experience with microservices and distributed systems (Communication Patterns, Distributed Transactions, Eventual Consistency)
• Messaging: Proven experience with messaging systems such as RabbitMQ or Kafka
• Databases: 3+ years of experience with advanced SQL (e.g., MSSQL) and NoSQL (e.g., MongoDB)
• Engineering Standards: Mastery of Clean Code, OOP, OOD, Design Patterns, and engineering best practices
• Testing: High level of expertise in unit and integration testing using frameworks like xUnit
• Troubleshooting: Advanced skills in profiling and debugging complex applications

Desirable:

• Cloud Migration: Knowledge or readiness for the team's upcoming move to AWS within the next year
• Networking: Deep understanding of network protocols, REST conventions, and security flows
• CI/CD: Knowledge of deployment patterns and automated pipelines
• Education: B.Sc. in Computer Science or an equivalent degree

Personal skills:

• Influence: Ability to influence customers and team members at the project level
• Complexity: Capability to resolve a broad range of complex technical and professional issues
• Agility: Readiness for challenges, learning agility, and openness to technical changes (such as cloud migration)

Ciklum is looking for a Senior .NET Engineer to join our team in Spain. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.