AI Full Stack Engineer

SoSafe GmbH; Lisboa; Hybrid; EUR 65,000 - 110,000; Full time

Benefits offered by this job

Flexible hours

33 vacation days

Open Up access

Dog-friendly HQ

Job summary

SoSafe GmbH in Lisbon is seeking an AI Full Stack Engineer to join the Adaptive Defence team. You will own problems end-to-end, prototype quickly, and ship AI-native features built on TypeScript, React, Node.js, and AWS. You’ll move fast in cycles and engage with customers to learn and improve.

The role emphasizes shipping over planning, autonomy, and shaping how we build with AI while maintaining a strong focus on cybersecurity and user impact. Hybrid from Lisbon with flexible cadence.

Qualifications

• Experience shipping 0→1 products in a startup or scale-up.
• Proven ability to prototype before specification.
• Strong interest in AI-native tooling and cybersecurity.

Responsibilities

• Own a product problem end to end, from framing to prototype to production.
• Move in short cycles. Days and weeks, not quarters, with working software in users' hands.
• Own the feedback loop by engaging with customers, learning, and shipping the next version.
• Develop AI-native features using TypeScript, React, Node.js and AWS.

Skills

AI-native development

Rapid prototyping

End-to-end ownership

Autonomy

Tools

TypeScript

React

Node.js

AWS

Job description

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AI Full Stack Engineer

SoSafe is Europe's leading human risk management company, trusted by 6,000+ organisations to turn their people into a line of defence against cyberattacks. We've built something real, and we're nowhere near done.

This role is on the Adaptive Defence team, SoSafe’s newest most innovative product where we build products fast, AI-native from day zero, and we put it in front of customers before it's perfect. We iterate in fast cycles. We're not here to maintain a roadmap. We're here to build what's next.

We've got the distribution, the customers, and the brand. What we need are builders: people who've taken something from 0 to 1, who prototype before they specify, who use AI to move faster, and who have no patience for process for its own sake.

Title and years don't decide this. What you've shipped does. If you're a builder, let's talk.

Location: Hybrid from Lisbon.

What you'll own

Ship, don't specify

• Own a product problem end to end: from framing to prototype to production.

• Move in short cycles. Days and weeks, not quarters. Your output is working software in users' hands, not decks.

• Own the feedback loop. Get in front of customers, learn, and ship the next version fast.

Build AI-native

• Agentic coding and rapid prototyping are your default, not a side experiment.

• You're a multiplier: you ship at a pace a conventional team can't match.

• You'll help shape how we build with AI. That's a happy side effect, not the mission. The product is.

• Our stack is TypeScript, React, Node, and AWS. We care more about how fast you ramp than what you know today.

Own the outcome

• You own the quality bar and the judgement behind what you build, not just the output.

• Make product, design, and scope calls without waiting for a committee, and own them when you're wrong.

• When the brief is incomplete, you narrow it yourself and move.

• Your name's on what ships. You're measured on impact, not tickets closed.

What we're looking for

• You've built 0 to 1. You've taken something from nothing to shipped, and you can point to the calls you owned and what came of them. Founder, indie builder, or early employee with outsized scope all count. Coordinating other people's work doesn't.

• You're hungry and not afraid. New domain, new stack, hard problem: you run at it. You'd rather ship something imperfect and learn than polish something that never ships.

• You build AI-native. AI tools are core to how you work, not an add-on. You have opinions on what's actually useful, and the scars to back them. Tool-agnostic on the way in; you'll converge with the team here.

• You keep your edge inside a structure. You've done things your own way. You know the difference between autonomy, which you'll have, and authority over everything, which nobody has.

Strong signals

• You've prototyped something real and put it in front of users in days.

• You've built your own tooling or workflow to go faster, and you can show it.

• You've got taste: a point of view on what great security or B2B SaaS looks like.

• You've lived startup or early-stage, where nothing works until you make it work.

• You actually care about human risk and cybersecurity, not just the market.

What you get

• The best tools, no rationing. Frontier LLMs are your daily driver, not a budget line you fight for.

• A lean, senior team with full ownership. No waiting on other teams, no design-by-committee, no politics.

• Build the product that sets the next standard in cybersecurity, with SoSafe's distribution behind you from day one.

• Room to move at your own speed. We won't slow you down with process.

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

• 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!