Full Stack Engineer (Python + Typescript)

Wiser Technology designs, builds, and scales complex software systems that power real-world impact. With 500+ engineers and over 25 years of experience in mission-critical environments, we help global organizations turn ambitious ideas into working solutions. Across Europe, MENA, and North America, we combine deep engineering expertise with AI and data to support leading companies in aerospace & defense, automotive, telecom & media, IT, and financial services.

We are looking for a Senior Full-stack Engineer to join our team dedicated to building and scaling high-profile, next-generation AI platforms aimed at executive and strategic clients. You will architect, build, and deploy enterprise Generative AI platforms and agentic systems. This is a high-autonomy role requiring extreme ownership. You will anchor the AI-heavy backend (Python/Node.js, Vector DBs) while independently building out the consuming Next.js frontends. We expect you to take high-level objectives, make definitive architectural decisions, and ship.

Core Responsibilities:

• End-to-End Delivery: Architect and ship production-ready features across the entire stack (React/Next.js frontend to Python/TypeScript backend).

• AI/LLM Architecture: Build and optimize RAG pipelines, text chunking strategies, and dynamic context windows.

• Data & Search: Own the data layer. Model relational data in PostgreSQL (e.g. SQLAlchemy/Prisma) and optimize high-performance vector searches using Qdrant or pgVector.

• API Design: Build robust REST/GraphQL APIs utilizing Python (FastAPI, Pydantic) and TypeScript (Node.js/NestJS/Fastify).

• DevOps & Infra: Containerize your own apps (Docker) and manage CI/CD deployments (e.g. Azure Pipelines) without waiting for DevOps hand-holding.

Hard Requirements:

• 7+ years of backend-heavy or full-stack software engineering experience.

• Dual-Language Fluency: Deep, production-level expertise in both Python and TypeScript backend ecosystems.

• Frontend Competence: Practical capability in React / Next.js. You must be able to manage state and build the UI required for your features.

• AI/Data Experience: Hands-on experience integrating LLMs, building RAG architectures, and operating vector databases (Qdrant / pgVector).

• High Autonomy: A track record of thriving in fast-moving, rapidly evolving environments where you had to learn new tools or AI concepts on the fly.

• Database & DevOps: Strong SQL fundamentals, API security (OAuth/JWT), and pragmatic CI/CD/Docker experience.

Preferred:

• Experience orchestrating multi-agent LLM systems (LangChain / Microsoft Agent Framework / similar).

• Experience delivering highly compliant enterprise or public sector software.

WHAT’S IN IT FOR YOU:

Culture & Development: 

• Friendly Environment: We take pride in our culture, and we love spending time together. 

• Team Spirit: Be part of a supportive team that uplifts each other.  

• Mentorship and coaching. Our colleagues are experts in their field, and you can expect to have a strong team to rely on. 

• Personalized Development Program: We realize one size doesn’t fit all, so you get an individual development plan tailored specifically to your career aspirations.  

Social Benefits: 

• A Suite of Perks: Additional health insurance, referral bonus, and more. 

• Work Flexibility: Embrace flexible working hours and a hybrid work model. 

• Multiple Office Locations: in Sofia, Plovdiv, Stara Zagora, and Nis, you choose where you would like to work. 

• Community and Connections: Engage in exciting social events and team initiatives. 

• Empowerment: At Wiser, every role is instrumental. You will have the power to make a difference! 

Wiser, We Have The Code®