Senior Full-Stack Engineer (Go / TypeScript) (all genders) Lisboa

Senior Full-Stack Engineer (Go / Type
Script) (all genders)

Your new role

Are you ready to shape the future of business telephony? As a Senior Full-Stack Engineer with a strong focus on Go (Golang) and modern frontends (Type
Script/Angular), you will be instrumental in developing and enhancing NFON’s
- based phone system. You will be instrumental in designing and implementing scalable backend services, ensuring high availability and performance. Your contributions will directly impact our product's reliability and efficiency, empowering businesses across Europe. This position offers an exciting opportunity to work with
- edge technologies in a collaborative and agile environment. If you are passionate about clean code, software architecture, and
- quality standards, this is the role for you! We're looking for a great addition to the team starting January 1, 2026.

The work you’ll do

• Design, develop and maintain backend services in Go and robust JSON REST APIs
• Build and optimize modern frontends with Type
  Script, Angular and testing frameworks
• Ensure seamless integration between frontend and backend systems
• Define and implement test strategies to maintain high software quality
• Integrate services into our CI/CD pipeline and extend automation workflows
• Collaborate closely with
  - functional teams (frontend, backend, Dev
  Ops, UI/UX, QA)
• Contribute to a culture of clean code, continuous improvement and strong knowledge sharing

The qualifications you need

• Bachelor’s degree in Computer Science or equivalent experience
• Proven experience with Go (Golang) and strong backend engineering expertise
• Proven experience with modern frontend technologies: HTML5, CSS3, Type
  Script and Angular
• Strong understanding of REST, JSON, YAML, Open
  API and relational databases (My
  SQL, Postgre
  SQL)
• Passion for software architecture, clean code, testing and best practices
• Experience with API-Monitoring (Grafana/Prometheus) and CI/CD tools (JIRA, Bitbucket, Bamboo)
• Strong communication skills in English and proactive
  - solving attitude

What we can offer you

• An unlimited
  - term contract
• Flexible working hours and the option to work hybrid (2 days/week in the office)
• Cozy and large workplaces with modern equipment and cordial colleagues in Lisbon (Barata Salgueiro 37) – super central
• Funding of educational trainings and Rosetta Stone language courses
• Additional vacation days (25 instead of 22)
• One of the best health Insurance with great coverage (including family members — free of charge (after probation period))
• Meal allowance card and Pizza discounts
• Subsidy of Urban Sports Membership
• Public transportation subsidy
• Choose your preferred device: Windows Laptop or Mac
  Book
• Regular team and company events
• Fruits and beverages in Office
• Referral Programmes - Earn up to €3, 000 bonus by referring top talent!

About us

NFON who?

We’re NFON – a leading European provider of integrated business communication with a focus on AI-based applications and as a licenced telecoms company active in 15 European countries. Since 2019 we are listed in the Prime Standard segment of the Frankfurt Stock Exchange, have nine branch operations and are working together with over 3, 000 partners. Every day, we support around 55, 000 business customers in Europe with intuitive communication solutions that make their businesses more efficient and flexible.

What we do…

As a
- term partner for small and
- sized businesses, we combine technological innovation with
- friendly and efficient business communication solutions. With both AI-based technologies and operational excellence, we are enabling companies to harness the full potential that artificial intelligence offers – for optimised processes, more precise customer interactions and new growth opportunities. With its core product, the smart cloud communications platform, we are offering
- free voice calls, simple video conferencing and seamless integration of CRM and collaboration tools for small and
- sized companies. All of NFON’s cloud services are operated in certified data centres in Germany, with 100% of their energy needs covered by renewable sources.

How & why we do it

Our vision is to rethink business communication, inspire and connect people to grow together sustainably. For that we need innovative ideas and people who get things done & never get discouraged. If plan A doesn’t work, the alphabet still has 25 other letters to choose from. There is one thing that builds the foundation of everything we do – and that’s respect. Whether it is towards our employees, our partners or our customers. We value each other’s commitment and listen to diverse opinions. We work as a team and learn from the people around us.

Diversity is at our core.

NFON is an equal opportunity employer and does not discriminate on the basis of ethnicity, religion, color, national origin, gender, sexual orientation, gender identity, age, marital status, veteran or disability status.

Seniority level

• Associate

Employment type

• Full-time

Job function

• Information Technology
• Industries: Telecommunications

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