Junior Full-Stack Software Engineer (all genders) at NFON AG

Lisbon, , Portugal -

Full Time

Start Date

Immediate

Expiry Date

13 Sep, 26

Salary

0.0

Posted On

15 Jun, 26

Experience

0 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Full-Stack Development, AI-Assisted Development, iOS, Swift, Backend APIs, NIA SDK, Prompt Engineering, Logical Thinking, Problem Solving, Programming Fundamentals, Critical Thinking, Collaboration, Software Design, Testing, Debugging, API Integration

Industry

Telecommunications

Description

Your new role From day one, as a Junior Full-Stack Software Engineer (all genders) you'll use AI as your primary development tool to build, debug, and ship real features that impact users. Working alongside experienced engineers, you'll gain hands-on experience with technologies such as iOS/Swift, backend APIs, and the NIA SDK while developing a broad understanding of modern AI-driven software engineering. Through collaboration, pair programming, and AI-assisted workflows, you'll learn how to design, build, and maintain high-quality software - not by memorising syntax, but by thinking clearly, asking the right questions, and critically evaluating the output. We value intelligence, curiosity, and critical thinking more than a specific educational background or previous professional experience. We're hiring for potential, not perfection. This is an opportunity to grow into a well-rounded software engineer who leverages AI to deliver real value across multiple areas of development. The work you‘ll do Build features across mobile applications, backend services, and SDK components - using AI as your primary development tool Prompt,validate, and iterate: use AI tools to generate solutions, then critically review and improve them Write, test, and ship high-quality production code Collaborate with experienced engineers to design and deliver effective solutions Investigate technical issues using a combination of AI tools and logical reasoning Continuously push the boundaries of AI-assisted development The qualifications you need Strong logical thinking and problem-solving ability - you can break complex problems into clear steps Basic understanding of programming fundamentals (data structures, functions, control flow) - enough to evaluate whether code is correct Experience using AI tools (ChatGPT, Copilot, or similar) to build, learn, or solve problems Critical thinking - you don't blindly trust AI output; you verify, question, and improve it Curiosity and enthusiasm for learning new technologies and approaches Ability to communicate clearly and work collaboratively within a team Interest in understanding software systems across frontend, backend, and integrations Self-taught developers, career changers, and passionate builders are encouraged to apply. 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) Professional & confidential mental health support (powered by OpenUp) Meal allowance card Subsidy of Urban Sports Membership Public transportation subsidy Choose your preferred device: Windows Laptop or MacBook Regular team and company events Fruits and beverages in Office Referral Programmes- Earn up to € 3,000 bonus by referring top talent! Contact us About us NFON who? Headquartered in Munich, NFON AG is Europe’s trusted partner for AI-based business communications. With its integrated portfolio of solutions for Business Telephony, Intelligent Assistant and Customer Engagement, NFON supports companies make their communications smarter and more efficient through secure, scalable and AI-based technologies. With its own subsidiaries in Germany, Austria, the United Kingdom, Italy, Spain, France, Poland, Portugal and Kosovo, NFON combines European innovation with a local market presence and is transforming the future of intelligent business communications ‘Made in Europe’. What we do… As a long-term partner for small and medium-sized businesses, we combine technological innovation with user-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 hassle-free voice calls, simple video conferencing and seamless integration of CRM and collaboration tools for small and medium-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. Of course everyone has personal goals. But at the end of the day what counts is the success of the overall team. 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.

Responsibilities

Build and ship features across mobile applications, backend services, and SDK components using AI as the primary development tool. Collaborate with experienced engineers to design, test, and maintain high-quality production code through AI-assisted workflows.