Senior AI Fullstack Software Engineer
At Lumenalta, we create impactful software solutions that drive innovation and transform businesses. Since 2000, we’ve partnered with visionary leaders to build cutting-edge tech, solve complex challenges, and deliver results faster through our elite teams and tech-driven approach. Join us in shaping the future of technology. We are seeking a Senior AI Fullstack Engineer proficient in JavaScript, TypeScript and Python who thrives on solving AI challenges across the entire stack. This role is ideal for a developer who excels in both frontend and backend development and enjoys building with AI-assisted tools. You will combine strong software engineering fundamentals with deep experience in AI harness design, prompt engineering, evaluation rubrics.
What You’ll Be Doing:
- Collaborate with visionary enterprise clients
- Full-stack Expertise: Write clean, secure, and testable TypeScript code across the software ecosystem.
- Architecture & Design: Develop modular patterns, scalable system architectures, and efficient server- and client-side logic.
API Integration: Design, build, and maintain robust RESTful, GraphQL, and WebSocket APIsExtend and implement AI workflows and harnesses using TypeScript and following AI and software engineering best practices; you'll be in charge of Harness Infrastructure, Prompt Engineering, Debugging, and Evaluations.
Create transformative digital products
Tackle complex challenges at scale
Push boundaries with emerging technologies
What we are looking for:
- 7+ years of expertise in JavaScript, TypeScript, Node, Express, Mongo, SQL, AWS.Strong Python expertise, including asynchronous services, type-safe application development, API design, testing, and scalable backend systems
- Recent demonstrable hands-on experience building with AI tools, prompt debugging tools, custom AI harnesses, and agentic coding workflows.
- Proficient in written and verbal communication in English.
- Demonstrable experience working in a remote environment, with a proactive and team-oriented approach.
- Why Lumenalta?
- Work on meaningful, impactful projects.
- Collaborate with a talented, supportive team
- Enjoy a flexible, remote-first environment
- Join a company that values your growth
- If you’re a passionate, career-focused developer ready to make a lasting impact, we want to hear from you!
Salary
Salary range:
$96,000 - $120,000 annually, with final compensation determined by your qualifications, expertise, experience, and the role's scope.
Location:
This is a fully remote position; however, candidates must be based in regions that align with the Pacific, Central, or Eastern U.S. time zones to ensure effective collaboration with client and team schedules.
Benefits:
In addition to competitive pay, we offer a variety of benefits to support your professional and personal growth, including:
Flexible working hours in a remote environment.
Health insurance (medical and dental) for W2 Employees.401K Contribution.
A professional development fund to enhance your skills and knowledge.15 days of paid time off annually.
Access to soft-skill development courses to further your career.
Position Details:
This is a full-time position requiring a minimum of 40 hours per week, Monday through Friday. At Lumenalta, we are committed to creating an environment that prioritizes growth, work-life balance, and the diverse needs of our team members.
Application Deadline:
Applications will be accepted until October 4th, 2026. Candidates can expect feedback by October 12th, 2026.