Software Engineer (m/f/d) - Go / Cloud-Native IMS

About us

About Us 

Committed to building the next generation of 100% software-based mobile networks, ng-voice combines DevOps with telecommunications expertise. We are creating innovative mobile infrastructure solutions, making them accessible for operators and enterprises that want to deploy future-proof, cloud-native networks.
We're hiring a talented Software Engineer (m/f/d) to join our team in developing next-gen features for our IMS (IP Multimedia Subsystem) solution. You will build high-performance Go applications, optimize distributed systems, and improve operational efficiency in a cloud-native environment.

Tasks

What You’ll Do 

• Next-Gen IMS Development: Develop and scale features for our IMS solution using Go (Golang) , following a test-driven development (TDD) approach.
• Core Network Logic: Work across the full spectrum of IMS nodes (P/S/I-CSCF, MMTel , etc.), transitioning legacy signaling patterns into high-performance Go services.
• Protocol Implementation: Handle signaling and media protocols (SIP, Diameter, RTP) directly within Go-based microservices.
• System Optimization: Perform deep-track testing, validation, and optimization to ensure low-latency performance and high-quality deliverables.
• Standards Alignment: Interpret 3GPP specifications and implement them to ensure our IMS solution remains industry-compliant and interoperable.
• Cloud-Native Operations: Work with a modern stack including Kubernetes, Redis, MySQL, and Prometheus to build resilient, self-healing network functions.

Requirements

Our Ideal New Colleague 

• Strong Go Proficiency: Deep experience in Go (Golang) is required , specifically with concurrency patterns (goroutines/channels) and performance tuning.
• Telephony & Signaling: Solid understanding of telephony standards, specifically SIP and Diameter .
• Systems Expertise: Very comfortable working in Linux environments and understanding low-level networking (TCP/UDP/SCTP).
• Scripting: Knowledge of Python or Bash for automation and tooling.
• Problem Solver: Strong analytical skills with the ability to debug complex distributed systems.
• Mindset: Self-motivated, autonomous, and able to thrive in a fast-paced, hybrid-remote startup environment.
• Communication: Proficiency in English.

Benefits

Benefits
A little more about our culture and why you should join

• Work-Life-Balance is a priority: Flexible working that suits you - we live and breathe a hybrid remote culture and don't mind where and when you work
• We are committed to building a diverse team that represents a variety of backgrounds, perspectives, and skills in a traditionally not very diverse industry
• We offer you the culture of a fast-growing start-up with the maturity of an enterprise company
• We are more interested in your experience and knowledge than formal degrees
• Entrepreneurial culture and flat hierarchies
• Mobility benefit, fitness benefit, language class benefit and wellness benefit (for full-time employees)
• Home office budget (for full-time employees)

About us

ng-voice is an equal opportunity employer. We believe demographic characteristics and diverse experiences that have nurtured unique viewpoints benefit our growth and performance and value each person and their different background as a whole.

Hope we caught your attention; we look forward to getting to know you!

DISCLAIMER

Even if you do not meet 100% of the requirements, however, you think this role will be a good match for you, please send in your application. We would love to be in touch!

Please be aware that we are currently not collaborating with agencies and any profile received will not be taken into consideration.