Senior Fullstack Engineer (Python, Node.js, React)

IT Teams is a Romanian company specialized in software outsourcing and remote staffing. We aim to assemble passionate experts to help companies and startups achieve success. We deliver the perfect combination of technical skills, methodology and high speed delivery techniques to help startups and established companies extend their development teams.

Our client is supporting a fast-growing AI-powered SaaS product that is building a next-generation platform designed to transform workflows for enterprise customers. The platform leverages advanced AI tooling to automate and augment critical processes, providing actionable insights and improving operational efficiency.

The product is currently in Beta, with a full launch targeted later this year. A newly formed engineering team will address existing architectural gaps and implement new feature sets. This role offers a rare opportunity to influence both technical direction and product success from an early stage.

About the project:

• The platform is an AI SaaS product built using a modern stack:


• Backend: Python (FastAPI), Node.js


• Frontend: React (TypeScript


• Infra/CI/CD: AWS, Kubernetes, Terraform, GitHub Actions


• Data: PostgreSQL (RDBMS), LLM integrations (OpenAI API, Langfuse)

This is a full lifecycle role—ranging from architecture discussions to feature delivery, where you’ll collaborate with product, design, and QA teams. You’ll also leverage modern AI developer tools (e.g., GitHub Copilot, LangChain) to accelerate delivery and improve quality.

• Develop and maintain backend services (Python/Node.js) and frontend components (React)


• Own features from estimation through to production and QA sign-off


• Contribute to architecture and technical direction decisions


• Collaborate with product, QA, and DevOps for smooth, high-quality delivery


• Ensure robust testing, observability, and security practices are in place


• Leverage AI development tools (e.g., GitHub Copilot, LangChain) to improve velocity and reduce boilerplate


• Participate in agile ceremonies: standups, sprint planning, reviews, and retrospectives

• 5+ years experience as a fullstack engineer in production environments


• Proficiency with Python (FastAPI) and Node.js for backend development


• Strong frontend skills with React (TypeScript)


• Solid database experience (PostgreSQL or similar RDBMS)


• Familiarity with microservices architecture and modern design patterns


• Experience with AWS, Kubernetes, and CI/CD pipelines (e.g., GitHub Actions)


• Exposure to AI/ML or LLM-based systems (e.g., OpenAI API, LangChain) is a plus

Soft Skills

• Clear communication and ability to collaborate in remote-first teams


• Proactive problem solver with a pragmatic, delivery-focused mindset


• Adaptable and resilient, comfortable in fast-paced and evolving environments


• Curious and eager to learn new tools and approaches (especially AI-driven)

Success Criteria

• Rapid onboarding within 2–3 weeks


• Delivery of clean, tested, and documented code aligned with agreed standards


• Effective collaboration across cross-functional teams


• Improved performance, resilience, and observability of platform components


• Demonstrated use of AI/ML tools to accelerate and improve development outcomes

Business & Delivery

• Experience in SaaS environments, ideally B2B


• Previous experience working in hybrid or distributed agile teams


• Ability to work autonomously and take ownership of end-to-end delivery

Working Practices

• Methodology: Agile (Scrum/Kanban hybrid)


• Tooling: Jira, Slack, GitHub, CI/CD pipelines


• Ceremonies: Daily standups, sprint planning, retrospectives, and demos

Additional Information

• Onboarding: Includes intro sessions with team leads across engineering, product, and delivery


• All work is fully remote. Travel (if ever required) will be covered by the client


• Work eligibility excludes candidates in regions subject to UK financial sanctions

Wondering what it is like to work at a fast growing company while the team is still small?

Want to make an impact in building a product that is changing an entire industry? That’s the kind of opportunity we’re offering.

Effort: full time, 8 hours/day, aligned with UK business hours

Project Duration: Up to 12 months with potential extension (6 months minimum except if performance issues)

Location: Fully remote/Nearshore to the UK preferred (+/- 2-3 hours)