Node.js Fullstack Engineer (Backend-leaning)

SoSafe; Lisboa; On-site; EUR 55,000 - 90,000; Full time

Benefits offered by this job

Flexible hours

33 vacation days

Open Up program access

Corporate discounts

Virtual events

Dog-friendly HQ

Job summary

SoSafe is seeking a Fullstack Engineer in the IAM team (backend-leaning) to advance our security awareness platform. You will own features end-to-end, balancing backend and frontend work to deliver frictionless UX while maintaining robust security controls.

You’ll collaborate across teams, contribute to a modern Agile/Scrum process, and help scale our product with strong testing, CI/CD practices, and observability discipline. English communication is essential.

Qualifications

• Proven track record of professional full-stack development using Typescript + React.
• Strong focus on testing and release strategies.
• Experience with end-to-end ownership of features from design to deployment.

Responsibilities

• Take core ownership on business-critical projects from conception to deployment.
• Improve end-user experience and adoption of internal features.
• Demonstrate observability and performance improvements using tools like Sentry, DataDog.

Skills

Typescript

React

Testing

Release strategies

CI/CD

Observability

DevOps

AI tooling

English communication

Tools

Claude

GitHub Copilot

Cursor

Job description

Fullstack Engineer - IAM Team (Backend-leaning)

SoSafe has the ambition to become the leading human risk management provider in Europe. Our award-winning awareness platform triggers behavioural change by providing effective and engaging training and simulations on cybersecurity and data protection. Cybercrime is costing the world >$10 trillion annually and growing by 15% p.a. - we invite you to be part of the solution!

We own how users access the entire product. From authentication flows to permissions and authorisation, we ensure frictionless user experiences with industry-leading security. Every single user interacts with our domain before using the rest of the product so we put a lot of effort into making our UX processes seamless, intuitive and confidence-inspiring. Our main objective at the moment is enforcing strong domain boundaries for our resources and migrating from self-developed solutions to a more integrated strategy utilizing trusted industry IAM players.

Here's how you'll make a difference:

• Take core contributor ownership on business-critical, complex projects from conception to deployment

• Care deeply about outcomes including end user experience and adoption of internal features

• Show your aptitude for observability and performance optimisation using tools like Sentry, DataDog, etc

• Take opportunities to flex both your backend and frontend skills to ensure frictionless user experience across the stack

• Collaborate deeply with other internal teams to ensure strong tooling and process adoption

• Use your obsession with quality to ensure robust testing resources, team best practices, a rock-solid CI/CD process and carefully designed releases

• Own the processes you design end to end - you are the steward of your projects and everyone knows it

• Become a trusted collaboration partner in a modern Agile/Scrum environment supporting your team mates with thorough code reviews, architecture and implementation discussions and pair problem solving

• Contribute to an enthusiastic team environment - we help, support and celebrate each other

What makes you a great fit:

• Proven track record of professional full-stack development success using Typescript + React

• Robust quality mindset and deep experience with testing and release strategies

• Systems-thinking mindset - you actively own processes end to end and think deeply about how they interact with other parts of the product and the people around you

• Comfortable working with (or learning to work with) AI-assisted tooling such as Claude, Github Co-Pilot or Cursor

• Strong observability and performance mindset and experience being able to quantify and show how your products are used

• Familiarity with CI/CD and common DevOps processes

• Collaborative and curious - you care deeply about your team environment and helping to make it the best it can be

• Strong communication skills in English

What we offer*

• Work/Life balance: Flexible hours, 33 vacation days

• Wellbeing and financial support: Access to Open Up, corporate discounts

• Connection & community: Virtual events, collaborative team activities, and opportunities for local meet-ups

• And the list goes on: Tech equipment, referral bonuses, dog-friendly HQ

*Perks and benefits listed above are for full-time employees and may vary slightly by office location. These are just a sample — you'll learn more during the interview process.

About Us

At SoSafe, we’re on a mission to make the digital world safer by addressing the human factor in cybersecurity. As one of the fastest-growing security awareness scale-ups worldwide, we leverage behavioural science and data-driven learning to empower people against cyber threats. Our Human Risk Management approach helps organisations turn their employees into their strongest line of defence.

Backed by leading VCs like Highland Europe and Global Founders Capital, we’re rapidly expanding across the globe. We’re looking for team players who want to drive meaningful change in cybersecurity, take ownership of their work, and grow with us.

If you thrive in a vibrant, purpose-driven environment that values innovation, diversity, and collaboration, then this is the place for you!