TMS LLC
Computer Software
Principal.NetEngineer
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“Principal. Net Engineer at TMS LLC. Skills: Principal Engineer (.Net), hands-on technical leader, forward-deployed engineer, AI-native product rewrites, Rapid modernization for portfolio companies, Net-new products for regulated markets, Venture AI Labs special projects, AI-first development, Own architecture and solutioning end-to-end, Drive code review standards, Partner with the CTO, Engineering Leadership on technical strategy, Mentor senior and lead engineers. operate as a forward-deployed ”
What You'll Achieve.
build new products from zero-to-one; rewrite existing products from the ground up using AI-native approaches; take on high-leverage special projects; prove out what 'AI-first from the ground up' actually looks like in production; accelerate the build of a new product; ship quickly without compromising on the compliance and reliability these markets demand; Build entirely new products; Take on high-impact, high-ambiguity initiatives; set the technical bar for the teams around you; ship production software safely and quickly; raise the quality bar across teams; connect engineering directly to business outcomes; run small, focused teams that ship
Industry & Context.
judgment to know when to move fast and when to slow down; Comfort operating in regulated environments
What They're Looking For.
Must Have
6–12 months of demonstrable AI-first development experience, where the majority of your code has been written through Claude Code, Codex, GitHub Copilot, Cursor, or JetBrains AI, Deep expertise in. NET / C# as a primary stack, with Python as supporting technology, A track record of architecting and shipping non-trivial systems: distributed services, data-intensive applications, cloud-native deployments, and integrations, Experience rewriting, re-platforming, or significantly modernizing existing products, Fundamentals in software design, testing strategy, CI/CD, observability, and secure-by-default engineering, Experience as a forward-deployed or embedded engineer, Excellent communication
Nice to Have
Experience leading or managing a pod in a high-velocity R&D group, innovation lab, incubator, fast-moving startup, or an equivalent skunkworks-style team inside a larger enterprise, Experience building with LLMs directly — RAG, evals, agent frameworks, tool use, fine-tuning, Prior work inside regulated industries (financial services, healthcare, legal, insurance, compliance-driven SaaS, etc.), Open-source contributions or public technical writing on AI-assisted development, Being a polyglot is a meaningful plus, Comfort operating in regulated environments is a plus
What You'll Do.
operate as a forward-deployed engineer
embedding directly with portfolio companies and product teams
build new products from zero-to-one
rewrite existing products from the ground up using AI-native approaches
take on high-leverage special projects for Venture AI Labs
and set the technical bar for the teams around you
Full AI-native product rewrites
Rapid modernization for portfolio companies
Net-new products for regulated markets
Venture AI Labs special projects
Lead AI-first development
Own architecture and solutioning end-to-end
Drive code review standards and raise the quality bar across teams
Engineering Leadership on technical strategy across the portfolio
Partner with the CEO on initiatives that connect engineering directly to business outcomes
Mentor senior and lead engineers across the model what great looks like in an AI-first
How You'll Work.
Team & Collaboration
embedding directly with portfolio companies and product teams; set the technical bar for the teams around you; Partner with the CTO, Engineering Leadership on technical strategy across the portfolio; Partner with the CEO on initiatives that connect engineering directly to business outcomes; Mentor senior and lead engineers across the model what great looks like in an AI-first, polyglot environment; align engineers, product, and executives around a technical direction
Communication Scope
Excellent communication — able to align engineers, product, and executives around a technical direction
Process & Methodology
high ownership, judgment to know when to move fast and when to slow down, run small, focused teams that ship
Full Job Description
Role: Principal Engineer (.Net) The Role: We are hiring a Principal Engineer as a hands-on technical leader. You will operate as a forward-deployed engineer, embedding directly with portfolio companies and product teams to build new products from zero-to-one, rewrite existing products from the ground up using AI-native approaches, and take on high-leverage special projects for Venture AI Labs. This is not a role where you will hand off designs and watch others build. You will architect, write code, review code, and set the technical bar for the teams around you. What You'll Do Your work will span four distinct but connected tracks: * Full AI-native product rewrites. Take an existing product and rebuild it entirely using an AI-native approach — rethinking architecture, data model, UX, and delivery pipeline rather than porting the old system one-for-one. You will prove out what 'AI-first from the ground up' actually looks like in production. * Rapid modernization for portfolio companies. Parachute into portfolio companies to accelerate the build of a new product inside one of Embrace's six regulated industry verticals. You will bring AI-first engineering practices, modern architecture, and senior judgment to teams that need to ship quickly without compromising on the compliance and reliability these markets demand. * Net-new products for regulated markets. Build entirely new products aimed at these same regulated verticals — not by digitizing existing workflows, but by rethinking the workflows themselves now that AI makes previously impossible experiences possible. * Venture AI Labs special projects. Take on high-impact, high-ambiguity initiatives out of Venture AI Labs — applied research, prototypes, and strategic bets that the CTO and CEO need moved forward by a senior engineer who can operate independently. Across all of this, you will also: * Lead AI-first development , where the majority of code is produced through leading AI coding tools (Claude Code, Codex, Git
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