Senior .NET Engineer — Hybrid, Global Payments Platform

Description Ciklum; Spain; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Medical insurance

Udemy license

23 vacation days

Short Fridays

Internal mobility program

Job summary

Ciklum is seeking a Senior .NET Engineer to join our team in Spain. You will be part of a cross-functional development group, working on back-end services in a microservice architecture for a fast-growing global payments client.

You will collaborate with PMs, architects, and QA in an Agile, distributed team, delivering features with high quality, performance, and security. The role offers hybrid work from Málaga and opportunities for professional growth.

Qualifications

• Experience in software development for more than 5 years.
• Excellent knowledge of clean code practices, OOP and OOD.
• Excellent knowledge in programming and REST API development.
• Database theory including RDBMS and NoSQL.
• Strong testing practices (unit/integration/functional).
• Algorithms and data structures.
• Knowledge of Architectural and Design Patterns.
• Security patterns, OWASP awareness.
• Experience with REST, RPC, OAuth/JWT authentication flows.
• Excellent knowledge of C# and .NET (Core/Framework).
• Proven experience with Redis, messaging systems (RabbitMQ, Kafka, SQS).
• Version control (Git) and CI/CD tools.

Responsibilities

• Back-end development in a microservice architecture.
• Participate in design decisions for architecture and code reviews.
• Develop and review feature design documents and specifications.
• Design and implement various tests (unit, integration, functional).
• Work in an international distributed Agile team.
• Communicate with PMs, engineers, architects, QA and stakeholders.
• Deliver product roadmap and planning.
• Maintain high coding standards and testable, performant code across the SDLC.

Skills

Fluent English

OOP/OOD

Clean code

C# & .NET

REST API

Databases

Testing frameworks

Algorithms

Data structures

Agile

Security patterns

Tools

REST API

ASP.NET Core

Entity Framework/Dapper

SQL Server

PostgreSQL

Redis

RabbitMQ

Kafka

Git

CI/CD (Gitlab/Jenkins/Azure DevOps)

Job description

Ciklum is seeking a Senior .NET Engineer to join our team in Spain. You will be part of a cross-functional development group, working on back-end services in a microservice architecture for a fast-growing global payments client.

You will collaborate with PMs, architects, and QA in an Agile, distributed team, delivering features with high quality, performance, and security. The role offers hybrid work from Málaga and opportunities for professional growth.