Site Reliability Engineer

KalshiKalshi has defined a new category: prediction markets. Kalshi allows people to trade on the outcome of any events and turn any question about the future into a financial asset. Kalshi fought for years and legalized prediction markets in the US for the first time in history, is currently the fastest growing financial market in America, and has thousands of markets across politics, economics, financials, weather, tech, AI, culture and more.We believe prediction markets have the potential to be the largest financial market because they turn anything into a financial position.Our vision: well… build the largest financial market on the planet.Our mission: bring more truth to the world through the power of markets.Our culture is simple: we hire really talented people, work really hard, and enjoy the climb. We are looking for ambitious and exceptional people to join our (relatively small) team to help us build the next generation of financial markets.Role RoadmapAs a member of Kalshi's engineering team, you'll help build the next-generation financial ecosystem—similar in ambition to creating an NYSE or CME from scratch. As part of a small, fast-moving team, your responsibilities will scale rapidly, and your impact will be highly visible. Much of Kalshi's infrastructure is still greenfield, and entire systems can be yours to design, own, and evolve.What You'll DoImprove observability, reliability, and service availability by defining and measuring key metricsBuild automation and systems that eliminate toil and reduce operational burdenCollaborate with core infrastructure engineers to performance-tune and optimize cloud deployments (Docker, Terraform, Kubernetes, EC2, etc.)Partner with product teams to minimize service disruptions and automate incident responseIdentify and analyze reliability problems across the stack, designing and implementing software for significant, long-term improvementsMentor engineers and drive a culture where reliability is a core engineering valueWrite high-quality, well-tested code that supports internal and external customer needsDebug complex technical issues and improve system usability, operability, and diagnosabilityReview feature designs across the company and ensure security, safety, scalability, and architectural clarityBuild and maintain integrations with third-party vendorsParticipate in on-call rotations to troubleshoot and resolve urgent issuesWhat You Bring4+ years of software engineering experienceExperience designing, building, scaling, and maintaining production services and service-oriented architecturesStrong system design, coding, debugging, performance-tuning, and observability skillsHigh-quality coding practices with strong testing disciplineExcellent written and verbal communication; comfort working transparently across teamsStrong interpersonal skills across junior-to-principal engineering levelsAbility to think clearly under pressure and dive into any layer of the stackPassion for building an open financial system that connects the worldWillingness to participate in on-call rotations and swiftly resolve issuesBonus Points:Experience designing highly reliable, high-throughput, low-latency systemsExperience with DatadogExperience with Rust, Go, and TerraformExperience with AWS, GCP, or AzureExperience operating in regulated environmentsExperience writing training materials or company-facing engineering contentNYC Pay TransparencySalary: $100,000–$250,000 annually, plus equity and benefits. These ranges reflect current market data. If your expectations exceed this range, we encourage you to reach out; we're always open to conversation.Our CultureMeritocracy is at our core, and we value people who take ownership and figure (usually hard) things out. We dream big. We love our craft deeply and are proud of what we put out in the world. We are committed to our vision of building something big… but also useful: a product that brings more truth through the power of markets.Kalshians are Kalshi's most important asset: we pick Kalshians carefully, so we trust them fully on day 1.Commitment to Equal OpportunityKalshi is committed to creating a culture of inclusion and belonging, and we are proud to be an equal opportunity employer. We believe it is our collective responsibility to uphold these values and encourage candidates from all backgrounds to join us in our mission. All qualified applicants will be treated with respect and receive equal consideration for employment without regard to race, color, creed, religion, sex, gender identity, sexual orientation, national origin, disability, uniform service, veteran status, age, or any other protected characteristic per federal, state, or local law.