This is a rare opportunity: Join a startup, earn equity and work on an amazing mission (identifying and preventing financial crime), and work in a healthy, respectful and intellectually rigorous environment. As a senior full stack engineer you will build software solutions for financial crime compliance spanning data pipelines, APIs, online platforms, and agentic workflows.You will report directly to the CTO.
About Us: Castellum.AI is an all-in-one AI agents and screening solution for AML/KYC that reduces false-positive alerts by up to 94% compared to legacy providers. We’re scaling quickly to meet market demand.

MINIMUM QUALIFICATIONS

• A strong technical background gained through education and/or on-the-job experience
• Experience building web applications
• Experience developing APIs and back-end systems
• Strong communication skills, written and verbal

PREFERRED QUALIFICATIONS

• Five years of software engineering experience
• Knowledge and experience with JavaScript, TypeScript, and popular front-end frameworks such as React
• Knowledge and experience with Go or other systems programming languages
• Knowledge and experience working with document or relational databases e.g. PostgreSQL, Elasticsearch
• Knowledge and experience with virtualization, containerization, and distributed systems

• Design, build, and maintain new and existing products
• Develop APIs, front-ends, data pipelines, and agentic workflows
• Develop and support third party integrations
• Participate in Agile development processes and ceremonies
• Participate in planning, development, code review, QA, and deployment
• Write efficient and scalable code
• Draft and review documentation and other technical documents
• Provide technical support to sales team and clients
• Consider business priorities, user experience, and a sustainable technical foundation
• Work remotely with a distributed team