Architect & lead the core execution model (state machine, lifecycle, resource model, failure semantics)
Design platform APIs/SDKs connecting workflows, agents, tools, and product surfaces; drive versioning & compatibility
Guarantee correctness via idempotency, deterministic replays, compensating actions, and data integrity
Engineer reliability at scale: concurrency controls, rate limits, backpressure, sharding/partitioning, and workload isolation
Build security & governance into the core: RBAC/ABAC, policy enforcement, fine-grained audit & lineage
Deliver observability: distributed tracing, structured logs, metrics, and evaluation hooks; build an “explainable trail” of agent actions
Own quality: design reviews, test strategy (unit, property, chaos), performance baselines, SLOs, incident response, and postmortems
Mentor & unblock senior engineers; partner with Product, Security, and Customer teams to translate requirements into durable primitives
Make pragmatic choices on storage, queueing, and compute; create paved roads that accelerate all other teams
Define system boundaries and reduce cross-service coupling through clear architectural patterns
Drive platform-wide standards for correctness, reliability, and API design across teams
Balance short-term delivery with long-term architectural integrity, ensuring the platform evolves without accumulating systemic risk.

12-15+ years of experience building distributed/platform systems, including significant experience defining architecture across teams or domains
10+ years owning mission-critical runtimes or workflow/orchestration systems
Deep expertise with durable execution (e.g., state machines, event sourcing, saga/compensation, idempotency, exactly/at-least-once semantics)
Proven track record with security & governance in production systems (auth, RBAC, audit, policy)
Hands-on with observability (Grafana or equivalent), including trace correlation across async boundaries
Strong systems design across storage, queues, schedulers, and evented architectures; performance tuning under load
Excellence in a modern language (e.g., Go, Rust, Java, or TypeScript) and cloud-native stacks (containers, CI/CD, IaC)
Comfortable operating in regulated or high-assurance environments; bias toward correctness, clarity, and documentation
Proven ability to influence technical direction across an organization and drive adoption of architectural standards
Ability to incorporate advance LLM capabilities into system design and platform architecture decisions where appropriate.

Career track opportunity with potential for rapid advancement with strong performance as the firm grows
100% employer paid, comprehensive health care including medical, dental, and vision for you and your family.
Paid maternity and paternity for 14 weeks at employees' normal pay.
Unlimited PTO, with management approval.
Opportunities for professional development and continued learning.
Optional 401K, FSA, and equity incentives available.
Mental health benefits are available through Tara Mind.

Principal Software Engineer – Platform Architecture, Execution Model

Key skills