Full Stack Engineer

La Fosse; Lisboa; On-site; EUR 45,000 - 75,000; Full time

Benefits offered by this job

Private healthcare and life insurance

25 days' annual leave

Daily meal allowance

Technical training and development

Modern engineering environment

Job summary

La Fosse is seeking a Software Engineer - Full Stack (Mid-Level / Senior) in Lisbon, Portugal. Join a growing international engineering hub to build modern web apps across frontend and backend, using React and TypeScript, with REST APIs and scalable services.

We value hands-on developers who solve complex problems, write high-quality code and continuously learn. Senior roles involve technical design leadership and mentoring teammates.

Qualifications

• Strong commercial experience building modern web applications.
• Hands-on with React and TypeScript.
• Experience developing REST APIs and backend services.
• Solid understanding of software engineering principles and design.
• Experience writing automated tests and maintaining high code quality.
• Ability to work across frontend and backend systems.
• Strong problem solving and attention to detail.
• Ability to work independently and collaborate across teams.
• Willingness to learn new technologies.

Responsibilities

• Design, develop and deliver end-to-end features across frontend and backend.
• Build modern, responsive web apps using React and TypeScript.
• Develop and integrate REST APIs and backend services.
• Take ownership from requirements to production.
• Write clean, tested code and automate tests.
• Ensure performance, scalability, security and usability.
• Collaborate with cross-functional engineers and design reviews.
• Participate in technical design discussions and architecture decisions.
• Troubleshoot issues across testing and production environments.
• Translate stakeholder requirements into engineering tasks.
• For senior engineers: lead technical design and guide others.

Skills

React

TypeScript

REST APIs

Go

Python

AWS/Azure/GCP

Kubernetes

SQL/NoSQL

UI/UX

Distributed systems

Microservices

Education

Computer Science or Engineering degree

Tools

Figma

Job description

Software Engineer - Full Stack (Mid-Level / Senior)

Location: Lisbon, Portugal

Employment Type: Permanent, Full-Time

About the Opportunity

We're partnering with a well-funded, international technology company expanding its engineering hub in Lisbon.

The business develops modern, cloud-native enterprise software used by major organisations globally. Engineering sits at the heart of the company, with a strong emphasis on technical excellence, clean code and solving complex engineering challenges.

This is an opportunity to join a growing engineering team where you'll work across frontend and backend development, take ownership of technical solutions and contribute to the development of scalable, secure and reliable software.

The company is hiring at both mid-level and senior levels, with opportunities for engineers who enjoy hands-on development, technical problem-solving and continuous learning.

Key Responsibilities

• Design, develop and deliver end-to-end features across frontend applications and backend services.
• Build modern, responsive web applications using React and TypeScript.
• Develop and integrate REST APIs and backend services.
• Take ownership of features from initial requirements through to design, implementation, testing and production.
• Write clean, maintainable and thoroughly tested code.
• Develop automated unit, integration and acceptance tests.
• Ensure applications meet high standards for performance, scalability, security and usability.
• Collaborate with frontend, backend and full-stack engineers.
• Participate in technical design discussions, code reviews and architectural decisions.
• Troubleshoot and resolve issues across testing and production environments.
• Work with stakeholders to understand requirements and translate them into deliverable engineering tasks.

For senior engineers, responsibilities will also include leading technical design, breaking down complex problems, guiding implementation and supporting other engineers.

• Strong commercial experience developing modern web applications.
• Hands-on experience with React and TypeScript.
• Experience developing REST APIs and backend services.
• Solid understanding of software engineering principles, architecture and design.
• Experience writing automated tests and maintaining high code quality.
• Ability to work across both frontend and backend systems.
• Strong problem-solving skills and attention to detail.
• Ability to work independently and collaborate across engineering teams.
• Curiosity and willingness to learn new technologies.
• Backend development using Go or Python.
• Experience with AWS, Azure or GCP.
• Microservices and distributed systems.
• SQL or NoSQL databases.
• Kubernetes and containerised applications.
• Experience working with large-scale enterprise applications.
• Knowledge of UI/UX principles, Figma or modern UI frameworks.
• Experience in financial services, payments or regulated environments.
• Computer Science, Engineering or a related technical degree.

What We're Looking For

We're interested in engineers who understand how software works beyond the frameworks they use.

You'll enjoy solving technical problems, writing high-quality code and taking responsibility for what you build.

For mid-level positions, we're looking for engineers who can independently deliver well-defined technical work.

For senior positions, we're looking for engineers who can take ownership of more ambiguous challenges, design solutions and help guide technical delivery.

What's on Offer

• Opportunity to join a growing international engineering hub.
• Private healthcare and life insurance.
• 25 days' annual leave plus public holidays.
• Daily meal allowance.
• Access to technical training and professional development.
• Modern engineering environment with opportunities for long-term career progression.