Principal Software Engineer, CI Infrastructure Bay Area, CA,

Staff/Principal Software Engineer, CI Infrastructure

Remote Bay Area, CA, US

Posted Date: 10/16/25

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more.

Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

The Continuous Integration Infrastructure (CII) team develops and owns underlying infrastructure for CI and artifact systems that support thousands of engineers across Block. The team is pivotal to the design and management of our expansive and mission-critical CI services.

Our mission is to improve developer experience at Block.

As a Staff/Principal Software Engineer you would be responsible for the detailed systems design of CI infrastructure. You Will build and operate the CI and artifact infrastructure and services that power developer workflows r work will shorten feedback cycles, raise release quality and make software delivery reliable, observable and secure.

• Partner closely with Block Engineering colleagues to define our roadmap
• Contribute to the growth of our development capabilities through leading, mentoring and supporting fellow engineers
• Build scalable and reliable infrastructure to support our mission critical CI services, artifact storage and supporting services.
• Own the CI services and artifact storage end to end and provide strategic direction for these, championing improvement projects.
• Collaborate across multiple teams, including Developer Experience, Platform Engineering, and Security providing technical guidance and solutions to teams with varying levels of infrastructure knowledge.
• Build automation for dynamic capacity planning and resource optimization to balance performance and cost efficiency across our AWS infrastructure
• Consolidate diverse CI platforms into a single unified CI experience that standardises interfaces and tooling for end-users

• Multiple years of experience at Staff or Principal-level scope and impact across multiple teams
• Deep experience architecting and operating large-scale CI or build systems in production
• Deep understanding of containers and related technologies
• An affinity for designing and implementing secure systems with a focus on supply chain security
• Strong software engineering skills in one or more of Go, Kotlin, Java, Ruby, or Python and Bash/shell scripting
• Natural curiosity to learn new technologies, solve interesting problems and build quality software

• Go, Kotlin, Java, Ruby, Python, Bash

Block takes a market-based approach to pay, and pay may vary depending on your location. U.S. locations are categorized into one of four zones based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.

To find a location’s zone designation, please refer to this resource . If a location of interest is not listed, please speak with a recruiter for additional information.

Zone A:

$263,600 — $395,400 USD

Zone B:

$263,600 — $395,400 USD

Zone C:

$263,600 — $395,400 USD

Zone D:

$263,600 — $395,400 USD

Use of AI in Our Hiring Process

We may use automated AI tools to evaluate job applications for efficiency and consistency. These tools comply with local regulations, including bias audits, and we handle all personal data in accordance with state and local privacy laws.

Every benefit we offer is designed with one goal: empowering you to do the best work of your career while building the life you want. Remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning are just some of…