Note: The job is a remote job and is open to candidates in USA. Lumin Digital provides cloud-native digital banking solutions for credit unions and banks. The company is seeking a Senior Software Engineer for AI to design, build, and ship AI-powered features, integrate large language models and AI/ML capabilities, and collaborate across teams to deliver secure, compliant solutions for its digital banking platform.
Responsibilities
- Design and build AI-powered features across Lumin's digital banking platform, including natural language interfaces, intelligent assistants, and automated workflows
- Integrate LLMs and AI APIs (Anthropic Claude, OpenAI, etc.) into production systems with robust prompt engineering, output validation, and safety guardrails
- Evaluate AI outputs critically, ensuring accuracy, reliability, and compliance with financial services regulations
- Collaborate cross-functionally with product managers, designers, QE engineers, and other engineering teams to deliver end-to-end AI features
- Contribute to Lumin's internal AI knowledge base, documenting patterns, best practices, and learnings for the broader engineering organization
- Champion security and compliance in AI feature development, with awareness of fintech regulatory requirements (SOC 2, data privacy, etc.)
- Conduct and participate in code reviews, raising the technical bar for AI-related work across the organization
- Evaluate and recommend new AI tools and frameworks as the ecosystem evolves, helping Lumin stay at the forefront of applied AI in financial services
Skills
- • Bachelor's degree in Computer Science or 5 years equivalent experience
- • 5+ years of professional software engineering experience
- • 1–2+ years of hands-on experience with AI/ML integration or LLM-based product development
- • Proficiency with LLM APIs such as Anthropic Claude or OpenAI, including prompt engineering and tool/function calling
- • Proficiency in TypeScript/Node.js
- • Experience with RESTful APIs, microservices architecture, and cloud infrastructure (AWS preferred)
- • Demonstrated ability to critically evaluate AI-generated outputs — knowing when to trust, verify, and push back
- • Strong written and verbal communication skills; ability to explain complex AI concepts to non-technical stakeholders
- • Minimal, generally 12 days or less per year, ~2X team get togethers a year
Benefits
- Medical, dental, and vision insurance
- 401(k) with company match
- Flexible PTO plus 12 paid holidays
- Paid sick leave
- Paid parental and family leave
- Lifestyle spending account
- Tuition reimbursement
- Cell phone stipend
Company Overview