Senior Software Engineer - Dev Platform

As a Senior Software Engineer on the Dev Platform team at Kraken (Payward), you will build and operate the AI Gateway, a company-wide LLM gateway that gives Kraken's engineers self-service access to leading models from providers such as Anthropic, OpenAI and Google. You own features end to end, from design through production, ensuring the service remains reliable and responsive to internal users' needs.

What you'll do

• Build and extend the AI Gateway with new model and provider integrations, routing policies, budgets, rate limits, and usage and cost reporting
• Design the APIs, SDKs and self-service tooling that let engineers across Kraken onboard to the gateway quickly and safely
• Help teams migrate their LLM workloads onto the gateway with minimal disruption
• Implement access control, key management and audit logging in partnership with Security
• Instrument the gateway so teams can see latency, errors, token usage and cost for their own workloads
• Own features end to end, from design through production, and keep the service reliable alongside SRE
• Support internal users with clear documentation, debugging help and a tight feedback loop that shapes the roadmap
• Contribute to code review, design documents and engineering practices across Dev Platform

What you bring

• Solid experience as a backend or platform software engineer building and operating APIs and distributed services in production
• Strong skills in a backend language such as Rust, Python or TypeScript, with a habit of writing well-tested, maintainable code
• Working knowledge of how LLM APIs behave: authentication, streaming responses, token accounting, rate limits and provider failure modes
• Experience with observability, CI/CD and containers, and comfort with Kubernetes and a major cloud provider
• Ability to design clean, well-documented APIs for internal customers and to weigh their feedback
• Clear written and verbal communication, and the ownership to carry work from idea to production

Nice to have

• Experience with API gateways, proxies or traffic management
• Experience building LLM-powered systems, including routing, caching, evaluation or cost controls
• Familiarity with authentication and authorization patterns such as OAuth, OIDC, and RBAC
• Contributions to open-source infrastructure or developer-platform projects

About Kraken (Payward)

Kraken is one of the world's longest-standing crypto platforms, founded in 2011 and trusted by over 10 million individuals and institutions globally. It offers spot trading, margin, futures, staking, and OTC services for both individual investors and institutional clients. Kraken is part of Payward, which also operates NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks.