Medior C# / .NET Software Engineer at Telio Group

Budapest, Central Hungary, Hungary -

Full Time

Start Date

Immediate

Expiry Date

05 Aug, 26

Salary

0.0

Posted On

07 May, 26

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

C#, .NET, Microservices, Domain-Driven Design, API Design, CI/CD, Azure, SQL, NoSQL, Distributed Systems, System Design, AI-Assisted Development, VoIP, Observability, Backend Architecture, English Proficiency

Industry

Information Technology & Services

Description

Your mission Are you passionate about writing clean, high-quality code and building reliable software solutions? We are looking for a Medior C# Developer to join our growing development team in Budapest, working for a multinational leader in the telecommunications sector. In this role, you’ll contribute to cutting-edge projects that power secure and efficient communication systems across the Globe. Your profile Duties and responsibilities Design, implement and evolve scalable backend services using C# / .NET Contribute to microservices architecture and domain-driven design initiatives Own features end-to-end from technical design to production rollout Participate in architecture discussions and system evolution decisions Collaborate with cross-functional teams (Frontend, DevOps, QA, Product) Support modernization of legacy components into distributed systems Contribute to API design and internal platform capabilities Participate in improving CI/CD pipelines and DevOps maturity Contribute to observability, monitoring and reliability improvements Ensure high standards of code quality, maintainability and security Support integration with telephony, VoIP, financial and regulatory systems Take part in research and experimentation with AI-based solutions where applicable Required Qualifications, Experience & Competencies Professional Experience & Skills Core Engineering Foundation 2-5 years of professional software engineering experience Solid foundation in computer science fundamentals (data structures, algorithms, distributed systems, system design) Ability to design scalable, maintainable and resilient systems Experience working on production systems (not necessarily mission-critical at scale) Good understanding of backend architecture principles Experience designing and working with APIs and service-oriented systems Awareness of performance, reliability, and security considerations Technology Adaptability Proficiency in at least one modern backend programming language (C#/.NET experience is highly valued, but strong engineers from other ecosystems are welcome) Experience working in distributed or microservices-based systems Solid database design knowledge (relational and/or NoSQL) Experience working with cloud environments (Azure preferred, but not mandatory) Comfort navigating hybrid (cloud + on-prem) environments Learning agility and architectural thinking over specific library knowledge AI & Modern Engineering Mindset Interest in applying AI-assisted development practices Openness to integrating AI-driven features into products Curiosity toward automation, intelligent workflows and experimentation Experience using modern AI development tools (Copilot, LLM-based workflows, etc.) is an advantage Growth mindset toward emerging technologies Active contribution to AI-enabled engineering workflows and intelligent product capabilities DevOps & Engineering Culture Understanding of CI/CD principles Ownership mentality and accountability for production systems Experience working in collaborative, cross-functional teams Desire to contribute to high-performance engineering culture English proficiency (written and spoken) Why us? We are offering Professional challenges, inspiring, diverse tasks structured development process learning path on new technologies (AI, LLM) multiculture environment flexible working hours and home office days relaxed atmosphere, steady, supportive international team easily accessible modern office with good infrastructure complimentary coffee, fruit and snacks About us Telio is a medium-sized, internationally active, rapidly growing company in the field of telecommunications and IT services in the prison sector. As the European market leader, we have been providing communications solutions for prisons and their inmates worldwide for over 25 years. With more than 270 employees, we are active in 23 countries and develop, install and operate communication and media systems that make an important contribution to resocialization in prisons as well as in correctional facilities.

Responsibilities

Design and implement scalable backend services and microservices using C#/.NET for secure communication systems. Collaborate with cross-functional teams to modernize legacy components and improve CI/CD pipelines and system reliability.