Ciklum is looking for a Senior .
NET Engineer to join our team in Madrid.
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.

About The Role
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, well-funded and dynamic global payments company. It is serving thousands of corporates and millions of end-users (payment receivers), in 190+ countries.
ResponsibilitiesBack-end development to meet customer’s business needs and implement components according to modern software development environment (microservice architecture)Taking part in the decision-making process in design application architecture, solution development, architecture and code reviewDevelop and review feature design documents and provide inputs/update to specifications for the solutionDesign and implement a set of various types of tests (unit, integration, functional, etc)Working in an international distributed team in an Agile environmentCommunicate with PMs, engineers, Architects, QA and other colleagues and stakeholdersDelivering the product roadmap and planningsTo use high coding standards, software best practices and write highly testable, automatable and performant code over the whole SDLCRequirementsExperience in software development for more than 5 yearsExcellent knowledge in: Clean code practices,



OOP and OODExcellent knowledge in ProgrammingDatabase theory (RDBMS, NoSQL)Code testing practicesAlgorithmsData structuresArchitectural, Enterprise and Design PatternsSecurity patterns, Reverse engineering resistance, Common attacks types (OWASP)Understanding of network interactions: protocols, conventions (e.g. REST, RPC), authentication and authorization flows, standards and practices (e.g. oAuth, JWT)Excellent knowledge and experience in C# and .
NETPractical commercial experience with: REST API development, .
NET Framework, .
NET Core, ASP.
NET (Core, MVC, WebAPI), Testing frameworks (e.g. e.g. NUnit, XUnit, MSTest), ORM (e.g. Entity Framework, Dapper) (more than 2 years), RDBMS (e.g. SQL Server, MySQL/MariaDB, PostgreSQL), Key-value storages, strong experience with Redis, Messaging systems (e.g. RabbitMQ, Azure ServiceBus, Apache Kafka, Active MQ, AWS SQS, Google Pub/Sub), Web Servers, Version control systems (GIT), Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins, Azure DevOps), BuildersExperience with: Troubleshooting, profiling and debugging applications, Creation software architecture and design of complex applications, platforms, microservices solutions, Agile software processes and technologies, Code Review process, refactoring processFluent or Upper-Intermediate EnglishWhat’s in it for you?Care: your mental and physical health is our priority.



We ensure comprehensive company-paid medical insurance and 4 additional undocumented sick leave daysTailored education path: boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy license, language courses and company-paid certificationsGrowth environment: share your experience and level up your expertise with a community of skilled professionals, locally and globallyFlexibility: 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 FridaysOpportunities: 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 potentialGlobal impact: work on large-scale projects that redefine industries with international and fast-growing clientsWelcoming environment: feel empowered with a friendly team, open-door policy, informal atmosphere within the company and regular team-building eventsAbout UsAt Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.
Based in Málaga, our team thrives in one of Andalusia’s leading tech hubs. Enjoy a hybrid work setup, the sunny Mediterranean vibe, and endless opportunities to grow your skills on general-scale projects.
Explore, empower, engineer with Ciklum

📌 Senior .NET Engineer (Málaga)
🏢 Ciklum
📍 Málaga