Software Engineer - Member of Technical Staff (Platform)

About the role

Mithril is an AI infrastructure platform designed to make GPU compute more accessible and affordable for leading enterprises, startups, and the AI research community. We have raised $80M in funding and are recognized by Fast Company as the 8th Most Innovative Company in Artificial Intelligence for 2026.

About Mithril

We are at an inflection point, transitioning from bare-metal operations to a cloud-native, multi-provider platform with a differentiated auction and flexibility model. The role involves working across three core engineering areas: Consumption, Platform, and Supply.

Core Responsibilities

• Backend & API
• Build and maintain backend Python APIs powering Mithril's reservation, bidding, billing, and usage surfaces — including usage visualization and the billing platform.
• Write and maintain database migrations, design relational schemas for complex multi-entity models (orders, allocations, grants, quotas), and optimize queries for performance.
• Own features end-to-end: from design doc through backend API, database migration, feature flag rollout, and monitoring.
• Platform & Marketplace
• Design and implement orchestration primitives for flexible reservations: pause/return credits, reservation extensions, capacity algorithm updates, and the auction model connecting spot and reserved capacity.
• Contribute to operational maturity — quota systems, financial controls, fraud prevention, and inventory management automation — so Mithril can scale supply sources without scaling headcount linearly.
• Supply Integrations
• Contribute to supply-side integrations, bringing GCP, Nebius, and OCI resources under Mithril management through the Mithril API.
• Build tooling to give operators visibility into managed capacity and surface supply constraints early.
• Consumption & Developer Tooling
• Build consumption tooling to help developers make better decisions: reservation calculators, bid modeling, cost dashboards, and CLI extensions.
• Work across the client frontend to ship customer-facing features including usage graphs, billing views, and reservation management UIs.
• Operations
• Participate in on-call rotations, triage production incidents, and contribute to operational runbooks and automation that reduce toil over time.

Requirements

• Strong Python backend skills — you've built and maintained production APIs at real scale, not just prototypes.
• Proven experience with distributed systems; comfortable with messaging systems (RabbitMQ, Kafka) and RPC methods (gRPC, protobuf, tRPC).
• Fluency with relational databases: schema design, query optimization, and migrations in production environments.
• Able to own a feature end-to-end — from design doc through backend API, database migration, feature flag rollout, and monitoring.
• Strong debugging instincts: calm and systematic when triaging production incidents, with a bias toward durable fixes.
• Comfortable in small teams where ownership is high and process is lightweight.

Nice to Have

• Experience with marketplace and billing systems — especially variable-usage, auction-based, or complex reservation models.
• Familiarity with Kubernetes, AWS infrastructure, or cloud provider APIs (GCP, OCI, Nebius).
• Familiarity with Linux containers and container orchestration (Docker Swarm, Nomad).
• Comfort working across the stack — Python backend and TypeScript/React frontend.
• Experience with developer tools or CLIs (bonus: SkyPilot or similar frameworks).
• Proficiency with infrastructure-as-code (Terraform, Kustomize) or observability tooling (Grafana, Prometheus).
• Background in real-time systems: SSE, WebSockets, or event-driven architectures.
• Prior experience at a startup where you wore multiple hats and shipped across domains.

Benefits

- Health, dental, and vision coverage for you and your dependents
- 401k Plan with 4% company match
- 21 days of PTO & 14 company holidays; including 2 floating holidays
- Salary Range Information: $170,000 - $230,000

In-Office Requirement

At Mithril, we prioritize collaboration and productivity. We expect team members to primarily work from their local office (Palo Alto or SF), with everyone gathering at HQ a minimum one day a week while our team remains small and cross-collaboration is critical.

Equal Opportunity Employer

Mithril maintains a strict commitment to Equal Opportunity employment practices. All applicants are evaluated without regard to race, color, religion, creed, national origin, age, sex, gender, marital status, sexual orientation and identity, genetic information, veteran status, citizenship, or any other factors prohibited by local, state, or federal law.