Full-time Employment: Ability to work as a full-time employee

Location: Austin, TX (Hybrid)

About Us:

Valkyrie is an applied science firm that builds industry-defining custom AI, ML and Knowledge Engineering solutions. Our interdisciplinary applied science teams support our clients from data normalization all the way through model deployment. Our work can be found across industry from SiriusXM, Activision, Chubb Insurance, and the Department of Defense, to name a few.

Valkyrie is developing an internal product, leveraging best-in-class AI technology. This position will help spearhead the product development. This is a seed-stage launch and will require someone who is ambitious, takes initiative and thrives in building a development practice from the ground up. Experience at a seed-stage company is a plus.

About the role

We’re seeking a passionate and experienced full‑stack engineer to help build the foundation of our infrastructure and internal tooling at a critical stage of company growth. The ideal candidate can shift fluidly from architecting knowledge‑graph‑augmented, LLM‑driven APIs to polishing the front end that showcases them. As one of the early engineering hires, you’ll own everything from rapid prototyping and iterative delivery in pre‑product‑market‑fit environments to translating scientific or research PoCs into production‑ready systems. This is a high-impact, high-ownership role — perfect for someone who thrives in fast-moving startup environments and wants to shape how engineering gets done. If you’re excited to build from zero and scale a platform with real product thinking, we’d love to talk.

Senior Product Engineer Qualifications

We encourage candidates to apply even if they don’t have 100% of the below qualifications. We believe in a holistic approach when evaluating talent for our team and post new roles often, so even if this role isn’t quite right, we want to meet you!

• Bachelors in STEM (Science, Technology, Engineering, Math) or equivalent work experience
• 5+ years of professional experience with Python
• Frontend / middleware experience with C#, .NET, JavaScript or TypeScript
• Strong proficiency with Git workflow and code‑review discipline
• 5+ years of Relational Databases (PostgreSQL)
• 2+ years’ experience with graph databases (Neo4j, Memgraph, Amazon Neptune, OpenCypher)
• Experience designing high‑performance API services using a python API framework (FastAPI, Django, Flask)
• Proficiency with Graph–augmented and vector‑based retrieval pipelines
• Experience with prompt engineering and orchestration of third‑party (OpenAI API, LangChain) and self‑hosted LLMs (Ollama, vLLM, Hugging Face)
• Sprint planning, task breakdown, and prioritization
• Enjoy mentoring, helping others to succeed and encouraging others in their journey to improve their technical skills
• Experience leading technical teams is a plus
• Containerization, CI/CD or Infrastructure as Code is a plus

Perks:

• Tremendous growth potential
• Open and unlimited PTO & Sick time
• Flexible hours, work from home as needed
• Company phone plan
• Medical, dental, vision, & HSA options
• 401K
• Parking Included
• Onsite gym & showers
• Stocked kitchen with healthy snacks, drinks, coffee, etc
• Team events including happy hours, catered lunches, and other fun outings
• Innovative, collaborative, and fun work environment that fosters a positive and supportive culture for growth

Full-time Employment: Ability to work as a full-time employee