Senior Full-Stack Engineer

Your new role

Are you ready to shape the future of business telephony? As a Senior Full-Stack Engineer (all genders), you will play a key role in developing and enhancing NFON's cloud-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 cutting-edge technologies in a collaborative and agile environment. If you are passionate about clean code, software architecture, and high-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

Further develop and maintain existing JSON REST APIs

Design and implement interfaces that connect seamlessly with existing back-end functionalities, utilising RESTful Web Services

Define and implement test strategies to ensure high software quality

Integrate services into our CI / CD pipeline, extending and improving automation workflows

Ensure knowledge transfer and close collaboration with your colleagues to help everybody improve

Support deployment processes, including occasional out-of-hours assistance

Collaborate closely with cross-functional teams, including frontend & backend developers, DevOps, UI / UX colleagues and QA engineers to create captivating and user-friendly designs that guide and excite our customers

Work in a self-organised agile team, contributing to a culture of continuous improvement

The qualifications you need

Bachelor's degree in computer science or relevant experience in software development

Strong communication skills in English, with the ability to explain complex ideas clearly

Proven experience with Go (Golang) and deep understanding of its specifications

Proficiency in modern server-side technologies and tools, including Postman, REST, JSON, YAML, OpenAPI, MySQL, PostgreSQL

Passion for software architecture, clean code, testing and best practices

Strong problem-solving skills with a proactive attitude toward tackling challenges as well as strong feedback culture

Experience with API-Monitoring (Grafana / Prometheus) and JIRA, Bitbucket, and Bamboo

Ideally skilled in front-end development with HTML5, CSS3, TypeScript, Angular, plus testing (Jest, Jasmine, Spectator, codeceptjs)

What we can offer you

An unlimited fixed-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 operating system : iOS or Windows

Regular team and company events

Fruits and beverages in Office

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