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Senior .NET Software Engineer, Gdańsk
  • Gdańsk
Senior .NET Software Engineer, Gdańsk
Gdańsk, Gdańsk, Pomeranian Voivodeship, Polska
TN Poland
27. 2. 2025
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Ciklum is looking for a Senior .NET Software Engineer to join our team full-time in Poland.

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 Software Engineer, you will become a part of a cross-functional development team providing strong technical direction that leverages diverse back-end services, relational and NO-SQL databases, CI/CD, sync/async processing, big data stores, and real-time data streams.

Responsibilities

  • Design and implement applications following software engineering best practices and principles.
  • Be responsible for maintaining the defined level of code quality on the project.
  • Make required infrastructural changes for successful application deployment.
  • Efficiently engage in global teamwork.
  • Specify needs for new apps and modifications, following standards and best practices.
  • Utilize technical skills to mentor and foster junior staff.

Requirements

  • Software Design: Use of best practices and patterns during application design and implementation. Hands-on experience with monolith, microservice, and serverless architectural styles. Understanding applications scalability approaches. Strong knowledge and practical experience with async processing techniques. Understanding REST API approach in web API implementation.
  • Software Development: In-depth proficiency level of C# and .NET technologies, implementing applications with .NET Framework/.NET Core. Experience in developing applications or solutions within large AWS/Azure/GCP infrastructures. Proven successful cases in developing backend applications using advanced framework features and industry standard conventions. Practical experience in writing and performance tuning of complex SQL/NO-SQL queries in MS SQL/CosmosDb/DynamoDB.
  • Quality Assurance: Previous participation in constant quality improvement on the project: conducting code reviews, setting up quality metrics, and monitoring.
  • Software Deployment: Hands-on experience with application deployment patterns and tools. Practical experience in infrastructure configuration using popular cloud providers. Understanding of all the SDLC steps.
  • AWS Cloud knowledge or practical experience.
  • NO-SQL databases (with a preference for DynamoDB).
  • Experience in configuring application security aspects.
  • Practical experience in application performance optimization.

Personal skills

  • Communication is key! You speak and write in English fluently or at least at an upper-intermediate level.
  • Accountability: Following the “said and done” principle. Accountability for your own scope of work. Corporate Security Responsibility.
  • Drive: Proactive in efforts to deliver results according to expectations. Suggesting new ideas, looking for alternative solutions, proven problem-solver.
  • Self-development: Eager to learn and grow; curious, keen on constant self-development. Constantly improving your own mastery.
  • Effective communication: Ability to express ideas, thoughts, and questions simply, concisely, and in a structured way. Good communication skills with the ability to communicate with all levels of management. A good team player.
  • Mentoring: Capability to assess tasks of less experienced colleagues. Ability to provide constructive feedback. Agile-driven development.

Whats in it for you

  • Care: Your mental and physical health is our priority. We ensure comprehensive company-paid medical insurance, life insurance, and Multisport card.
  • 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 dont miss your regular team stand-up.
  • 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.
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