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Senior Fullstack Engineer- AI Platform

SoSafeUnited Kingdom RemoteDevelopment
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
6 Aug 2026
Status
Open · checked 7d ago

About this role

This remote role invites a Senior Fullstack Engineer to build the core AI platform powering next-generation cybersecurity products at SoSafe. Operating from the United Kingdom, Portugal, or Ireland, this position suits an experienced developer passionate about AI infrastructure, developer tooling, and scalable full-stack systems.

Role Overview

SoSafe seeks a dedicated engineer to join a small, highly autonomous team focused on creating shared AI infrastructure. Instead of working on isolated features, this role centers on building the centralized platform, tools, and services that allow all engineering teams to deploy AI safely and at scale. Candidates will experience high ownership, shape technical directions, and deliver systems relied upon across the organization.

Key Responsibilities

Construct the fundamental capabilities supporting the Agentic AI Platform, such as agent runtimes, tool registries, model routing, and platform services.
Design and engineer production-grade developer tools and platform services utilizing NestJS, Node.js, TypeScript, and React.
Engineer reusable AI infrastructure to help engineering squads deploy and run AI agents securely at scale.
Engage hands-on with Large Language Models, agent orchestration, and frameworks like LangChain or LangGraph while addressing governance, scalability, and observability.
Take full end-to-end ownership of features spanning architecture, implementation, deployment, and ongoing enhancement.
Influence future AI engineering strategies by proposing ideas, refining developer experiences, and guiding architecture.

Requirements

Extensive background in constructing modern full-stack software utilizing TypeScript, Node.js, and React.
Practical background crafting AI applications or platforms using AI agents, LLMs, LangGraph, LangChain, MCP, or comparable technologies.
Possesses a platform mindset centered on building reusable APIs, tooling, and systems that empower fellow engineers.
Comfortable integrating AI coding tools into daily tasks while exercising sound technical judgment regarding code quality and architectural design.
Capability to navigate ambiguity, assume accountability, and resolve complex engineering challenges within a dynamic setting.

Nice to Have

Background working with developer platforms, cloud-native architectures, distributed systems, infrastructure-as-code, or AI governance.

Skills and Tools

React
Node.js
TypeScript
LangChain
LangGraph
NestJS
Large Language Models (LLMs)
Agent Orchestration
Developer Tooling

Salary and Benefits

Flexible working hours supporting work-life balance alongside 33 vacation days.
Financial and wellbeing support featuring Open Up access and corporate discounts.
Community building through virtual events, collaborative team activities, and local meet-ups.
Additional perks including tech equipment, referral bonuses, and dog-friendly office environments where applicable.

About the Company

SoSafe operates as a rapidly expanding human risk management scale-up dedicated to making the digital world safer by tackling the human element in cybersecurity. Utilizing behavioral science and data-driven learning, the organization transforms employees into effective organizational defenses against cyber threats. Backed by prominent venture capital firms including Highland Europe and Global Founders Capital, the company values diversity, collaboration, and purpose-driven innovation.

How to Apply

Interested candidates should visit the official SoSafe careers page to submit their application for this remote opportunity.

Skills and tech stack

Questions candidates ask

What locations are eligible for this remote position?

Applicants must be currently based in and legally authorized to work in the United Kingdom, Portugal, or Ireland.

What primary technologies are used in this role?

The tech stack includes Node.js, TypeScript, React, NestJS, LangChain, LangGraph, and various Large Language Models.

What is the primary focus of the AI Platform team?

The team builds shared infrastructure, tooling, and services like agent runtimes and model routing that enable all engineering teams to operate AI safely at scale.

What benefits are provided with this position?

Benefits include 33 vacation days, flexible working hours, wellbeing support through Open Up, tech equipment, referral bonuses, and corporate discounts.

Ready to apply?

The application is on the official SoSafe careers page.

Apply on company site