Simplex 3D is looking for a Senior Full-Stack Software Engineer to join our growing team. We’re building the future of 3D urban planning and geospatial visualization, combining photorealistic 3D, large datasets, sketching tools, GenAI and LLMs to a cutting-edge application with real-world impact.

Responsibilities

• Design, develop, and maintain robust full-stack applications integrating both AI capabilities and geospatial data.
• Work with existing codebase and extend it with new, complex features independently.
• Collaborate with the team to deliver high-quality, performance-oriented solutions.

Requirements

• BSc in Computer Science / Software Engineering or equivalent.
• At least 3 years of experience in full-stack development.
• Strong experience in Frontend: React, JavaScript, CSS, HTML.
• Strong experience in Backend: Java, Spring Boot, Hibernate, Python.
• Solid knowledge of working with Relational Databases (SQL, PostgreSQL).
• Hands-on experience integrating AI models via APIs or using execution libraries.
• Experience in building multi-agent systems with rigid tool-calling schemas and deterministic routing to solve complex, multi-step enterprise workflows. 
• Experience with AWS and cloud-based development.
• Familiarity with software development methodologies and version control (GitHub).
• Proactive, independent, and takes ownership (“big picture” mindset).
• Excellent communication skills and team player attitude.
• Ability to thrive in a fast-paced, innovative environment.

Advantages

• Knowledge of GIS and experience in developing map-based applications or web apps involving geospatial data.
• Knowledge of vector databases and experience developing robust RAG-based applications.
• Familiarity with the Model Context Protocol (MCP) or designing rigid JSON tool-calling schemas for AI agents.
• Knowledge of authentication systems, tokens, and securing API interactions.

We are looking forward to working with you!