Senior Software Development Engineer
First seen by Alion on Aug 24, 2026.
About The Role :
We are looking for a Full-Stack Engineer with a strong backend bias to help build end-to-end product experiences across Lumen and Agent Studio. You will own features from database and API design through to the front-end experience, working closely with product and design to ship AI-powered experiences that real business users depend on every day.
What Youll Do :
- Design and build backend services and APIs in Python that power core product and AI-agent features.
- Build front-end interfaces and experiences that let users interact naturally with AI agents, insights and CRM workflows.
- Own features end-to-end from data modeling and backend logic to UI implementation, testing and release.
- Work with product managers and designers to translate requirements into well-architected, scalable systems.
- Integrate with LLM-based and agentic backend systems built by the AI/ML engineering team.
- Optimize application performance, reliability and code quality across the stack.
- Engage directly with customers and customer success teams to understand workflows, triage issues and inform roadmap decisions.
What Were Looking For :
- 46 years of professional full-stack engineering experience, with a clear backend-heavy skill set in Python.
- Strong experience designing and building REST/GraphQL APIs, data models and scalable backend services.
- Working proficiency with modern front-end frameworks (e.g., React) to build and integrate user-facing features.
- Experience with relational/NoSQL databases, caching and cloud infrastructure.
- Ability to move fast in a zero-to-one environment while maintaining code quality and system reliability.
- Strong communication skills this is a customer-facing role, and you will be expected to clearly articulate technical concepts, decisions and trade-offs to both technical and non-technical stakeholders, including customers.
Good to Have :
- Experience building features on top of LLM or AI-agent backends.
- Prior experience in CRM, SaaS or enterprise business applications.
- Exposure to real-time or voice-based product interfaces.
Skills
Python, React.js, API, Full Stack, CRM, NoSQL, GraphQL