Our mission is to enable a world in which experts play a more meaningful and elevated role in the work of any business.
The Role
Lead design and implementation of an LLM-powered expert intelligence platform: build vector-backed indexes, search algorithms, core SaaS APIs, and product features. Make architecture decisions, ship features with product and leadership, ensure security/compliance considerations, and mentor/hire to grow the engineering team.
Summary Generated by Built In
About Us
We are building the leading expert intelligence platform for government contracting. Our platform uses AI and LLMs to unlock insights from government solicitations and connect contractors with the right expertise at the right time. Already trusted by GovCon leaders, we are scaling rapidly into a $100B+ market.
We’re looking for a Lead Engineer to take ownership of core systems, set architectural direction, and be the foundation of our future engineering team. This is a chance to build not just a product, but an industry-defining technology.
The Role
As Lead Engineer, you’ll be responsible for designing, implementing, and scaling the next generation of our expert intelligence platform. You’ll work closely with the CEO and founding team and early customers to bring new capabilities to market. This is a highly hands-on role where you’ll code daily, make critical architecture decisions, and help build the engineering culture from the ground up.
What You’ll Do
- Lead the design and development of LLM-powered systems for expert matching and solicitation intelligence (OpenAI)
- Manage our growing vector-backed indexes of experts and solicitations, and the search algorithms that connect them (OpenSearch, PGVector, Go)
- Launch products that accelerate talent mobility by graphing knowledge at the individual work experience level
- Lead design and development of core SaaS platform and API features (Python, Go, React)
- Define architecture and set engineering best practices for a growing team
- Collaborate directly with product and leadership to ship features quickly and iteratively
- Balance “startup speed” with long-term needs like security, compliance, and scalability
- Mentor future hires and help shape the engineering organization.
What We’re Looking For
- Experience developing with LLMs, LLM orchestration, vector search, and/or AI-first product development
- Proven experience shipping software in Python, React, and AWS environments
- Startup experience — able to thrive with ambiguity, iterate quickly, and wear many hats
- Strong architectural skills, balancing near-term execution with long-term scalability
- Mission-driven, hungry, and eager to own outcomes
- Comfortable engaging on data security/compliance topics (CMMC/FedRAMP/SOC2 familiarity a plus, not required)
Why Join
- Impact – Your work will directly shape how $100B+ in government contracting decisions get made
- Equity upside – Meaningful ownership stake
- Growth path – Early opportunity to step into a leadership role as we expand the team
- Mission – Build AI-first technology that modernizes how government and industry collaborate
Skills Required
- Experience developing with LLMs, LLM orchestration, and vector search / AI-first product development.
- Proven experience shipping software in Python, React, and AWS environments.
- Experience managing vector-backed indexes and search algorithms (OpenSearch, PGVector) and building services in Go.
- Designing and developing core SaaS platform and APIs.
- Strong architectural skills balancing near-term execution with long-term scalability.
- Startup experience; ability to operate with ambiguity and wear many hats.
- Mentoring and helping build an engineering organization.
- Comfortable engaging on data security and compliance topics.
- Familiarity with CMMC, FedRAMP, or SOC2.
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The Company
What We Do
OnFrontiers builds knowledge networks for distributed businesses seeking to become more agile and competitive. Our product is a SaaS platform customers use to manage their network of go-to experts and also to access new expertise via our expert marketplace.
Why Work With Us
The OnFrontiers network spans over 100 countries and thousands of topics. We are a cohesive, entrepreneurial team of 15+ people living and working remotely in 4 continents that is changing the way professionals connect and learn from one another. We look for the best people to help us solve hard problems and build a company we are proud to be.
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