TL;DR

Senior Fullstack Developer (AI): Building and scaling %hirify_global%'s next-generation AI-powered platform with an accent on architecture shaping, end-to-end complex feature ownership, and international growth. Focus on evolving consumer-facing apps and business engines, designing scalable cloud services, and implementing real-time event streaming and distributed systems.

Location: On-site in Helsinki city centre with a hybrid model (1 remote day/week after on-site onboarding). Must be located in Finland (the capital region) with a valid work permit. Relocation and visa services are not offered.

Salary: 4500–6500 €/month

Company

%hirify_global% is a fast-growing marketing technology company in Finland, building an AI-powered platform that transforms websites into 24/7 sales and support teams for small businesses.

What you will do

Build and scale the next generation of %hirify_global%’s AI-powered platform, shaping architecture and owning complex features end-to-end.
Translate product and design visions into elegant, performant, accessible interfaces, including conversational AI experiences and complex data visualizations.
Architect and build scalable, resilient cloud services (serverless, containerized) on AWS, defining data models and APIs.
Implement robust authentication, observability, CI/CD, and handle massive data loads with real-time event streaming and distributed systems.
Collaborate with product designers, engineers, and stakeholders, mentoring through code reviews and championing best practices.
Proactively identify and resolve issues before they are shipped, ensuring quality and performance at scale.

Requirements

Strong full-stack experience in scaling SaaS environments, shipping production-grade web apps end-to-end.
Fluent in TypeScript/JavaScript and React (or similar) with experience building high-quality UIs, components, and interactions.
Solid backend engineering skills with cloud-native architectures, capable of building scalable services on AWS (serverless/containers, RESTful APIs, PostgreSQL, MongoDB, DynamoDB).
Proven ownership, product thinking, and clear communication skills in English, understanding GDPR and web security essentials.
Startup/scale-up mindset, thriving in fast-moving environments and contributing to defining practices and architecture.
Professional proficiency in English for daily communication with technical and non-technical stakeholders.

Culture & Benefits

Join as one of the first senior engineers in a low-hierarchy, high-ownership core team, influencing architecture and product direction.
4-day workweek (Mon–Thu) with full 5-day salary, ensuring every weekend is a long weekend.
Hybrid work model with 1 remote day per week after initial on-site onboarding.
Lunch benefit, excellent health coverage for work and leisure, and a continuous HSL public transport season ticket.
Opportunity to work with an experienced product design team and directly with the CEO.
Thrive in an environment where practices and architecture are still being defined, shaping %hirify_global%'s next generation of products.

Hiring process

Intro call with recruiter.
Remote discussion with Tech Lead.
On-site meeting with Product team.
Technical deep-dive (on-site).
Job offer.