Senior .NET Engineer

Ciklum; Málaga; Hybrid; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Medical insurance

Udemy license

Language courses

Company-paid certifications

23 vacation days

Short Fridays

Job summary

Ciklum in Madrid is seeking a Senior .NET Engineer to join a cross-functional team delivering scalable backend services in a microservices environment. You’ll design, implement, test, and review RESTful components using C#, .NET Core/Framework, and relational and NoSQL databases, within an agile, distributed setup.

You’ll collaborate with PMs, architects, QA, and clients across borders, uphold coding standards, and help shape the product roadmap while enjoying a hybrid work setup in one of

Qualifications

• 5+ years of software development experience.
• Strong knowledge of Clean code, OOP and OOD.
• Expertise in C# and .NET ecosystem.
• Experience with REST API development and databases (RDBMS/NoSQL).
• Proficient in testing and code review processes.
• Familiarity with microservices and enterprise patterns.
• English proficiency and collaboration in a distributed team.

Responsibilities

• Back-end development to meet customer needs in a microservice architecture.
• Contribute to design decisions and architecture reviews.
• Develop and review feature design docs and specifications.
• Design and implement tests (unit/integration/functional).
• Collaborate with PMs, architects, QA and stakeholders.
• Deliver product roadmaps and planning with high coding standards.

Skills

C#

.NET

REST API

Entity Framework

SQL

NoSQL

Microservices

Unit Testing

Agile/Scrum

English

Tools

ASP.NET Core

NUnit

XUnit

MSTest

Redis

RabbitMQ

Azure Service Bus

Kafka

Git

SQL Server

Job description

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.

Responsibilities

• Back-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 review
• Develop and review feature design documents and provide inputs/update to specifications for the solution
• Design and implement a set of various types of tests (unit, integration, functional, etc)
• Working in an international distributed team in an Agile environment
• Communicate with PMs, engineers, Architects, QA and other colleagues and stakeholders
• Delivering the product roadmap and plannings
• To use high coding standards, software best practices and write highly testable, automatable and performant code over the whole SDLC

Requirements

• Experience in software development for more than 5 years
• Excellent knowledge in: Clean code practices, OOP and OOD
• Excellent knowledge in Programming
• Database theory (RDBMS, NoSQL)
• Code testing practices
• Algorithms
• Data structures
• Architectural, Enterprise and Design Patterns
• Security 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 .NET
• Practical 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), Builders
• Experience 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 process
• Fluent or Upper-Intermediate English

What’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 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

About Us

At 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 global-scale projects.

Explore, empower, engineer with Ciklum!