Senior Software Engineer (Java)

Location: Denver, Colorado preferred; elsewhere in the US is acceptable with monthly travel to the Denver hub. Hybrid role with US-hours L3/L4 pager duty responsibilities.

Company

hirify.global provides a platform for managing and securing APIs, event streams, and AI agent interactions through a unified control plane.

What you will do

• Design, implement, test, release, and iterate on features for API Management, the gateway runtime, Access Management, or the Kafka Event Gateway.
• Build and evolve Java services and APIs, including performance-sensitive asynchronous runtime code.
• Contribute to the Gamma console through backend APIs and TypeScript and Angular interfaces as needed.
• Maintain secure defaults, certificate and secret handling, audit logs, safe migrations, and backward compatibility.
• Own US-hours Level 3 and Level 4 product escalations as part of the L3 pager duty rotation.
• Develop AI agent management capabilities, including AI Gateways, MCP, and agent-to-agent interactions, while using and validating AI-assisted development tools.

Requirements

• 5+ years building and operating production software on a team that ships and supports its own product, including personally resolving production incidents.
• Strong Java experience with maintainable REST APIs and backend services; strong C# with equivalent object-oriented depth is also considered.
• Understanding of API design, data modeling, distributed systems, asynchronous workflows, and relational or document data stores.
• Experience with safe migrations, backward compatibility, automated testing, Git-based development, code review, and iterative product delivery.
• Security-first approach covering authentication and authorization fundamentals, secure defaults, and certificate and secret handling.
• Hands-on use of LLMs or AI coding assistants in engineering workflows, with the judgment to review and improve generated output.
• Clear communication and the ability to take ambiguous problems through to production.
• Willingness to join an L3 pager duty rotation in US hours.

Nice to have

• Reactive Java with Vert.x, RxJava, or Netty, or experience with API gateways, proxies, or service-mesh platforms.
• Identity standards and protocols including OAuth 2.0, OIDC, SAML 2.0, SCIM, MFA, WebAuthn/FIDO2, FAPI, CIBA, or UMA.
• Kafka internals, binary protocols, backpressure, and performance optimization under load.
• TypeScript with Angular or another component-based framework for data-rich interfaces.
• Docker, Kubernetes, operators, CRDs, Elasticsearch, or OpenSearch.
• MCP, Agent2Agent, tool calling, LLM proxies, or LLM-powered applications; prior production experience is not required.
• Open-source software or enterprise developer platform experience.

Culture & Benefits

• Hybrid work culture with regional hubs, quarterly team events, and an annual company offsite.
• Medical coverage, pension or 401(k) program options, stock options, and 25 days of holiday plus in-country national holidays.
• Three mental health days, a wellness allowance, and a day off for your birthday.
• Professional development budget and opportunities to expand scope and career growth.
• Collaborative, international environment emphasizing ownership, clear communication, customer focus, and thoughtful engineering judgment.