Staff Software Engineer (Backend)
Axiomatic_AI
- Boston, Massachusetts, United States
- Boston, Massachusetts, United States
About
Our mission, 30×30, is to deliver a 30× improvement in the speed, accessibility, and cost of semiconductor and photonic hardware development by 2030.
We aim to revolutionize hardware design and simulation in these industries and are building a team of highly motivated professionals to bring these innovations from research into commercial products.
Position Overview As a Staff Software Engineer (Backend), you will set the technical direction for our backend platform and drive the systems that power an AI‑native product at scale. This is a hands‑on, T‑shaped role with a deep backend specialization: you’ll spend roughly 70% of your time writing and reviewing backend code, 20% on architecture and technical strategy , and 10% contributing to frontend work when needed.
You operate at the intersection of backend engineering, AI infrastructure, and platform reliability, making the foundational decisions that let every other engineer ship faster, safer, and cheaper.
Write and ship backend code daily — this is first and foremost a hands‑on engineering role
Own the technical strategy for backend systems and AI infrastructure
Lead cross‑functional initiatives spanning backend, AI, infra, and frontend
Design and evolve foundational platforms (model routing, agent runtime, persistence, observability)
Drive engineering excellence through RFCs, standards, and architecture reviews
Contribute to frontend development when needed, collaborating with frontend engineers on integration points
Multiply the team through mentorship and force‑multiplier code (frameworks, internal libraries, shared patterns)
Be the technical owner of production reliability : incident response, performance, cost, security
Key Responsibilities 1. Technical Strategy & Architecture
Set the 12–24 month technical roadmap for backend systems with the Head of Engineering / Lead Software Engineer
Author RFCs and design documents that shape the engineering organization
Make build‑vs‑buy decisions on critical platform components (model routing, vector DBs, queues, eval pipelines)
Design for scale, multi‑tenancy, and compliance readiness
Drive architecture reviews and ensure technical consistency across squads
2. Platform & Infrastructure
Own foundational systems: conversation persistence, observability stack, and core platform services
Lead cost‑optimization initiatives (caching strategies, batching, resource budgets)
Establish SLOs and drive incident response, postmortems, and durable fixes
Partner with infra on the deployment story (Cloud Run, Cloud SQL, VPCs, multi‑region)
Drive security and compliance (auth, secrets, data residency, audit trails)
3. AI Systems
Collaborate with the AI team to integrate LLM‑powered features into backend services
Design clean abstraction layers for model providers, enabling routing and fallback
Contribute to patterns for prompt management, evaluation, and regression testing
Stay informed on emerging AI infrastructure trends and help evaluate build‑vs‑buy decisions
Set and enforce coding standards, review templates, and testing practices
Drive measurable quality improvements (p95 latency, error budgets, test coverage, infra cost)
Identify systemic issues and design durable fixes, never one‑off patches
Build internal frameworks and libraries that raise the velocity of every other engineer
Mentor senior engineers and help them grow toward staff
Lead technical interviews and define the engineering bar
Represent backend engineering in cross‑functional planning
Communicate trade‑offs clearly to product, leadership, and external stakeholders
Coach the team on debugging, performance work, and incident response
Key Requirements
10+ years of backend development experience , with 2+ in a staff/principal/lead role
Documented technical leadership : led architecture for multi‑team systems, authored RFCs adopted org‑wide
Distributed systems intuition : caching, queues, eventual consistency, idempotency, backpressure
Production‑grade Databases : query optimization, schema migrations, partitioning, connection pooling, ORMs (SQLAlchemy)
Comfort working alongside AI workloads : basic familiarity with LLM API integration patterns; willingness to learn and support AI infrastructure as needed
Systems thinking : incident response, observability, SLO design, capacity planning
Force‑multiplier mindset : designed and shipped frameworks/libraries adopted by other engineers
Nice‑to‑Have
Experience with LLM integration in production (Anthropic, Google, OpenAI, Vertex AI)
Familiarity with agent frameworks (Pydantic AI, LangGraph, FastMCP) or similar
Frontend experience with React, Angular, or Vue — ability to contribute to UI when needed
Scaling an AI product from 0 → 1 and 1 → 10
Authoring open source or internal frameworks adopted by other teams
Performance‑critical Python (Rust/Go interop, async tuning, native extensions)
Security/compliance background (SOC2, GDPR, secret management)
Infrastructure as code (Terraform), GitOps, platform engineering
Current Stack
Backend: Python, FastAPI, SQLAlchemy, Pydantic AI, FastMCP, Alembic
Databases: PostgreSQL, Redis (caching)
APIs: REST, WebSockets, SSE, MCP
Infrastructure: Terraform, Docker
CI/CD: GitHub Actions
Observability: Logfire, Sentry, OpenTelemetry
Team work model: Preferred hybrid from our Boston office; remote arrangement may be considered.
Primary location: Boston, US.
At Axiomatic_AI, you will be working on technology that drives innovation in AI for scientific and engineering applications in line with our 30X30 mission.
This is your opportunity to contribute to the development of new AI architectures that can reason coherently and produce interpretable and verifiable solutions. Consequently, see those ideas commercialized into products that will shape the future of hardware and computing, while collaborating with a global team of engineers and AI specialists.
We believe in pushing the boundaries of what is possible and continuously seek to redefine the intersection of AI, with focus on formal consistency. If you’re ready to take your expertise in artificial intelligence and physics to the next level, we want to hear from you!
As set forth in Axiomatic_AI’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.
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Languages
- English
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