Senior Product Engineer, Semaphore

• This role is for someone with strong ownership, initiative, taste, and judgment
• You should be comfortable moving between product questions, system design, code, infrastructure, and user experience as the work requires
• A track record of independently shipping meaningful software products or major product capabilities
• Strong product judgment: you can identify the essential user problem, reduce unnecessary scope, and recognize when an experience is good enough to ship—or not good enough yet
• Strong engineering judgment across system design, implementation, reliability, and long-term maintainability
• Strong backend and systems fundamentals, including APIs, asynchronous processing, service boundaries, state and lifecycle management, retries, idempotency, and failure recovery
• Comfort with infrastructure concepts such as virtual machines, storage, networking, authentication, secrets, containers, and cloud platforms
• Ability to navigate a polyglot environment. Semaphore systems include Go, Elixir, Ruby, React, and related technologies; expertise in every language is not required
• Enough frontend capability to build or extend focused product user experiences without depending on a separate team for every change
• Fluency with modern AI-assisted development: decomposing work for agents, supplying useful context, reviewing generated changes, and building verification into the workflow
• Initiative and persistence. You make progress with incomplete information, surface risks early, and bring in other people when their input will improve the result
• Strong written and spoken English and experience working independently in a remote, asynchronous team

Desirable

• Semaphore is a remote-first software company building continuous integration and delivery (CI/CD) products for engineering teams
• Our customers rely on Semaphore Cloud and our self-hosted enterprise products to build, test, and deliver software securely and reliably
• We have spent years building developer infrastructure at scale
• We are now using that foundation to create new products and capabilities for a world in which software is increasingly built by people working with AI coding agents
• We are looking for a senior product engineer who can take an important idea from an early, ambiguous problem to a useful product running in production
• You will work across product and engineering boundaries: understanding the user, shaping the solution, making technical decisions, building the system, and improving it based on real use
• Some work will extend mature Semaphore products
• Some will start as a small experiment or a new product
• In either case, you will be responsible for getting to a strong outcome, not completing a predefined list of tickets
• AI coding agents are part of our daily engineering workflow
• We expect you to use them fluently to explore, build, test, and ship faster
• You remain accountable for the work: choosing the right problem, setting direction, making trade-offs, reviewing what is produced, and ensuring that the result is coherent, reliable, and maintainable
• Take product ideas from problem definition through design, implementation, rollout, and iteration, including experiments that may grow into standalone products
• Work directly with users and internal stakeholders to identify the real problem, decide what is worth building, and make pragmatic scope and architecture decisions
• Build across backend services, APIs, infrastructure-facing components, and focused frontend experiences, reusing proven Semaphore systems before introducing new infrastructure
• Use AI coding agents effectively while maintaining a high bar for correctness, security, clarity, and product quality
• Own the production outcome, including reliability, observability, supportability, and working within Semaphore's security and compliance requirements. Communicate decisions, progress, and risks clearly
• Within your first three months:
• You have taken ownership of a meaningful product problem and shipped a useful capability to production
• Your work shows good product taste, clear technical decisions, and disciplined scope
• You have learned enough of Semaphore's existing platform to reuse its strengths and avoid unnecessary reinvention
• You are using AI coding agents to increase your output while keeping the resulting systems understandable, tested, and reliable
• Product and engineering decisions move faster because you bring clear options, make sound calls, and follow through
• The team trusts you with an ambiguous new product or feature and expects you to drive it to a strong result