Senior Infrastructure Engineer

Cobalt Streamworks is the leading AI-powered customer engagement platform that helps leading brands like Redfin, SeatGeek, Priceline, Calm, and Box create dynamic, individualized experiences at scale. Our platform empowers organizations to activate customer data, design seamless cross-channel interactions, and optimize engagement—all with enterprise-grade security and compliance. Today, nearly 1,200 brands across 50+ countries rely on Cobalt Streamworks to drive growth, deepen customer relationships, and deliver joyful customer experiences. Our success is powered by extraordinary people who bring our core values—Trust, Growth Mindset, Balance, and Humility—to life. We foster a culture of innovation, collaboration, and inclusion, where ideas are valued and individuals are empowered to do their best work. That’s why we’ve been recognized as one of Inc’s Best Workplaces and Fastest Growing Companies , and were recognized on Forbes’ list of America’s Best Startup Employers in 2022. Notably, Cobalt Streamworks has also been listed on Wealthfront’s Career Launching Companies List and has held a top 10 ranking on the Top 25 Companies Where Women Want to Work . With a global presence—including offices in San Francisco, New York, Denver, London, and Lisbon, plus remote employees worldwide—we are committed to building a diverse and inclusive workplace. We welcome candidates from all backgrounds and encourage you to apply. Learn more about our story and mission on our Culture and About Us pages. Let’s shape the future of customer engagement together! How you will make an impact: Engineering at Cobalt Streamworks is responsible for the core platform used by our growing customer base. Making this platform easy to use and attractive to non-technical users is extremely important. Our Engineering team works closely with Product, Design, Infrastructure, and SRE to bring next-generation marketing solutions to our massively scalable platform. We believe in building an Engineering culture guided by our company values which you can learn more about here . One of our core values is Growth Mindset and Cobalt Streamworks is a company where everyone can continuously learn. If this is an idea that excites you, please do apply as we value applicants for the skills they bring beyond a job description How you will make a difference: As a Senior Infrastructure Engineer working on the User Data Infrastructure team, you will: Use your Kubernetes and AWS expertise to evolve EKS lifecycle, multi-tenant isolation, and regional consistency, ensuring clusters remain secure, performant, and predictable as we scale. Improve reliability and cost by identifying areas of waste (storage, compute). Improve automation of our Elasticsearch cluster management system (shard management, data retention, indexing, cross cluster re-balancing). We are looking for people who have : 5+ years building and operating large-scale, cloud-native systems (SRE, DevOps, or infrastructure engineering roles). Deep production experience with Kubernetes (controllers, CRDs, Helm/Kustomize, autoscaling, security context). Experience managing Infrastructure-as-Code at scale (Terraform) Strong software engineering skills in Java or Python; ability to read/extend code in other languages when needed. Demonstrated leadership: mentoring peers, driving cross-team initiatives, and influencing engineering culture. Our Cobalt Streamworks /how-we-work/blob/master/our-stack.md" rel="nofollow ugc noopener noreferrer" target="_blank"> Technology Stack : Programming Language: Scala, Java Databases: Elasticsearch, Postgres, Redis Infrastructure: Kafka, AWS, Pulsar Other Relevant Technologies: Docker / Kubernetes Bonus Points Experience working with large code base Experience with functional programming and the JVM Perks & Benefits: Competitive salaries, meaningful equity, & 401(k) plan Medical, dental, vision, & life insurance Balance Days (additional paid holidays) Fertility & Adoption Assistance Paid Sabbatical Flexible PTO Monthly Employee Wellness allowance Monthly Professional Development allowance Pre-tax commuter benefits Complete laptop workstation The US base salary range for this position at the start of employment is $133,500 - $212,000. Within this range, individual pay is determined by specific US work location, as well as additional factors, including job-related skills, experience, relevant education or training, and internal equity considerations. Please note that the range listed above reflects only base salary. The total compensation package includes variable pay (where applicable), equity, plus a range of benefits, including medical, dental, vision, and financial. In addition, we offer perks such as generous stipends for health & fitness and learning & development, among others. Recruitment Disclaimer: Please be aware that Cobalt Streamworks , Inc. (“ Cobalt Streamworks ”) and our official professional recruiting agencies and platforms do not: Send job offers from free email services like Gmail, Yahoo mail, Hotmail, etc. Request money, fees, or paymen