Senior Full Stack Software Engineer

All3 is transforming how buildings are conceived, developed, and delivered. We combine AI-powered design with robotic prefabrication and on-site assembly to build custom architecture at the cost and speed of mass production — unlocking even the most complex sites.

We’re currently seeking a Senior Full Stack Software Engineer to join our team, focused on developing and integrating tools that power our AI-driven design and fabrication platform. You’ll help connect architectural and structural modules into one seamless system, designing intuitive interfaces and efficient backend services.

• Designing, developing, and maintaining web applications;
• Supporting integration of architectural and structural systems into the digital platform;
• Building and integrating RESTful APIs and database-driven services;
• Developing reusable UI components and tools for project management and library control;
• Collaborating with cross-functional teams of 10–15 engineers, designers, and architects;
• Participating in code reviews and maintaining high standards of software quality;
• Contributing to architecture discussions and continuous improvement of the tech stack.

• Strong mathematical or engineering background (physics, mathematics, engineering, or related fields);
• Strong experience in frontend (React, modern JavaScript) and backend development, ideally Python (C++ or Java is an alternative);
• Strong foundation in algorithms, data structures, and system design;
• Solid understanding of core web concepts, including REST API, web applications, and databases;
• Understanding of structural logic, or willingness to deeply learn domain-specific mechanics;
• Familiarity with Docker, Git, and CI/CD workflows;
• Strong communication and collaboration skills;

• Chance to be a part of a large-scale project;
• Team driven by impactful cause;
• Hybrid format of work with spacious office in New Belgrade;
• Private health insurance including dental;
• Language courses;
• Flexible working schedule;
• 20 days of annual leave.