Sr Software Engineer | Backend (AI)

At Quickbase, we help organizations build better ways to run their operations. Our products give teams the flexibility to create applications around how their work actually happens, connecting people, information, and processes so they can keep work moving as needs change. For more than 25 years, organizations have turned to Quickbase to solve operational challenges that off-the-shelf software wasn't built for. Today, we’re building on that foundation with new products and new possibilities for how people create, adapt, and improve the systems their work depends on. Working at Quickbase means helping find better ways forward. We’re a team of curious, collaborative people who care about solving problems, learning as we go, and building things that make work better for our customers and each other. Job Title: Senior Software Engineer Location: Sofia, Bulgaria Department: Engineering Reports to: Sr Manager, Software Engineering Job Summary Quickbase is looking for an experienced Senior Software Engineer to design, build, and enhance modern web applications and backend services that power innovative, AI-driven product experiences for our no-code platform. In this role, you will work cross-functionally to deliver scalable, high-performance solutions while contributing to system reliability, engineering best practices, and a fast-moving collaborative culture. Full-stack experience is preferred, with a strong emphasis on backend development. Job Duties and Responsibilities Design, develop, and maintain full-stack application features and services. Build AI-powered product experiences using modern frameworks and tooling. Collaborate with Product Managers, Designers, and Engineers to deliver impactful solutions. Write clean, maintainable, and well-tested code. Participate in code reviews and contribute to engineering best practices. Help improve system reliability, scalability, and performance over time. Contribute to a collaborative and fast-moving engineering culture. Basic Qualifications Strong software engineering experience building and maintaining production-grade applications across frontend and backend systems, with strong backend development experience. Experience designing and building scalable, high-performance backend services and APIs. Solid engineering fundamentals including testing, debugging, system design, and building maintainable, scalable architectures. Experience working with cloud-based infrastructure and CI/CD pipelines. Ability to independently own projects and deliver high-quality software in iterative development environments. Strong communication and collaboration skills with the ability to work effectively across cross-functional teams. Customer-focused mindset with attention to usability, reliability, and overall product quality. Preferred Qualifications Experience with modern web technologies such as React and Node.js, or comparable technologies with ability to ramp up quickly. Experience integrating AI-powered features or working with modern AI tooling. How We Think About AI At Quickbase, we view AI as a tool to accelerate how work gets done — not replace it. We encourage thoughtful use of AI to improve speed, quality, and decision-making, while maintaining strong judgment, accountability, and data integrity. Benefits Unlimited remote work policy 25 days of annual leave, 2 additional days off for volunteering Competitive remuneration package incl. an annual bonus Top-notch IT setup. Mental health support, life insurance, food vouchers Additional health insurance - for you and your loved ones Annual wellness support allowance External Professional Learning Opportunities Equal Opportunity Statement Quickbase is committed to building a diverse and inclusive workplace. We encourage candidates from all backgrounds to apply – even if you don’t meet every qualification listed. We are proud to be an equal opportunity employer.