Senior Platform Software Engineer I at Braze – London | Jobyssey

At Braze, we have found our people. We’re a genuinely approachable, exceptionally kind, and intensely passionate crew.

We seek to ignite that passion by setting high standards, championing teamwork, and creating work-life harmony as we collectively navigate rapid growth on a global scale while striving for greater equity and opportunity – inside and outside our organization.

To flourish here, you must be prepared to set a high bar for yourself and those around you. There is always a way to contribute: Acting with autonomy, having accountability and being open to new perspectives are essential to our continued success.

Our deep curiosity to learn and our eagerness to share diverse passions with others gives us balance and injects a one-of-a-kind vibrancy into our culture.

If you are driven to solve exhilarating challenges and have a bias toward action in the face of change, you will be empowered to make a real impact here, with a sharp and passionate team at your back. If Braze sounds like a place where you can thrive, we can’t wait to meet you.

Braze is the leading customer engagement platform, helping brands build personalized messaging experiences across push, email, in-app, and more at massive scale. Our technology stack is rooted in Ruby on Rails, MongoDB, Redis, Kafka, Kubernetes and more.

The In-Memory Databases & Observability team provides the foundational infrastructure and tools that keep Braze fast, reliable, and observable. Valkey sits at the heart of Braze: every message we send flows through it and our fleet serves around 36 million operations per second while holding terabytes of data in memory. We operate Valkey, Memcached, and Elasticsearch, along with the observability stack (Prometheus, Thanos, and related tooling) that gives engineering teams visibility into their services. These systems handle enormous volumes of traffic and have a direct impact on the reliability of the Braze platform.

As a Platform Software Engineer, you'll write code and run infrastructure at scale. You'll build the automation, tooling, and services that make these systems reliable, efficient, and easy for other engineers to use.

WHAT YOU’LL DO

Design, build, and operate Redis/Valkey, Memcached, Elasticsearch and Observability systems on Kubernetes with a focus on reliability, performance and cost efficiency at scale
Write the software that manages these systems: Kubernetes operators, automation, CLIs, and self-serve tooling that replace manual operations
Own and evolve Braze's observability platform, including metrics collection, long-term storage, alerting, and dashboards, so teams can detect and diagnose issues early
Lead capacity planning, upgrades, and migrations for large, stateful systems with minimal customer impact
Partner with engineering teams across Braze to improve how they use these systems, from data modeling and access patterns to query performance and monitoring
Investigate complex production issues across the stack and turn what you learn into durable fixes and better tooling
Contribute to the team's on-call rotation and help improve runbooks and write tooling that would help incident response
Document your designs and decisions clearly for a global team

WHO YOU ARE

5+ years of experience in software engineering, platform engineering, or SRE, with a strong record of writing production code (not only operating systems)
Hands-on experience running stateful, distributed systems in production at scale
Strong working knowledge of Kubernetes and infrastructure-as-code (Terraform, Pulumi) and comfort building on top of them
Proficiency in at least one general-purpose language such as Go, Python, or Ruby. We care more about design judgment than language choice
A systems mindset: you think about interfaces, failure modes, and edge cases, and you debug methodically when things break
A strong problem-solving mindset and a track record of working with other teams to untangle complex engineering problems
Clear written and verbal communication, and comfort collaborating across time zones
A bias toward fixing what's broken instead of working around it

NICE TO HAVE

Deep experience with Redis/Valkey, Elasticsearch, or similar systems, including performance tuning, replication, and failure handling
Experience with OpenTelemetry and observability tools such as Prometheus, Thanos, Grafana, or Datadog
Experience with Kafka or other streaming systems
Experience building developer-facing tooling or Kubernetes operators
A thoughtful approach to using AI tools in your own engineering workflow

WHAT WE OFFER

Braze benefits vary by location, and we encourage you to review our specific benefits offerings for each country at here. More details on benefits plans will be provided if you receive an offer of employment.

From offering comprehensive benefits to fostering hybrid ways of working, we've got you covered so you can prioritize work-life harmony. Braze offers benefits such as:

Competitive compensation that may include equity
Retirement and Employee Stock Purchase Plans
Flexible paid time off
Comprehensive benefit plans covering medical, dental, vision, life, and disability
Family services that include fertility benefits and equal paid parental leave
Professional development supported by formal career pathing, learning platforms, and a yearly learning stipend
A curated in-office employee experience, designed to foster community, team connections, and innovation
Opportunities to give back to your community, including an annual company-wide Volunteer Week and donation matching
Employee Resource Groups that provide supportive communities within Braze
Collaborative, transparent, and fun culture recognized as a Great Place to Work®

ABOUT BRAZE

Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging™ Braze helps brands deliver great customer experiences that drive value both for consumers and for their businesses. Built on a foundation of composable intelligence, BrazeAI™ allows marketers to combine and activate AI agents, models, and features at every touchpoint throughout the Braze Customer Engagement Platform for smarter, faster, and more meaningful customer engagement. From cross-channel messaging and journey orchestration to Al-powered decisioning and optimization, Braze enables companies to turn action into interaction through autonomous, 1:1 personalized experiences.

The company has repeatedly been recognized as a Leader in marketing technology by industry analysts, and was voted a G2 “Best of Marketing and Digital Advertising Software Product” in 2025.

Braze was also named a 2025 Best Companies To Work For by U.S. News and World Report, a 2025 America’s Greatest Companies by Newsweek, and a 2025 Fortune Best Workplace in Technology™ by Great Place To Work®, among other accolades. Braze is also proudly certified as a Great Place to Work® in the U.S., the UK, Australia, and Singapore.

The company is headquartered in New York with offices in Austin, Berlin, Bucharest, Chicago, Dubai, Jakarta, London, Paris, San Francisco, São Paulo, Singapore, Seoul, Sydney and Tokyo.

BRAZE IS AN EQUAL OPPORTUNITY EMPLOYER

At Braze, we strive to create equitable growth and opportunities inside and outside the organization.

Building meaningful connections is at the heart of everything we do, and that includes our recruiting practices. We're committed to offering all candidates a fair, accessible, and inclusive experience – regardless of age, color, disability, gender identity, marital status, maternity, national origin, pregnancy, race, religion, sex, sexual orientation, or status as a protected veteran. When applying and interviewing with Braze, we want you to feel comfortable showcasing what makes you you.

We know that sometimes different circumstances can lead talented people to hesitate to apply for a role unless they meet 100% of the criteria. If this sounds familiar, we encourage you to apply, as we’d love to meet you

OUR AI-POWERED BRAZE RECRUITMENT PROCESS

At Braze, we’re committed to a fair and transparent candidate experience. To help our recruitment teams focus on what matters most — the person behind each application — we use AI-assisted tools at certain stages of our recruitment process.

This includes using AI to analyze the experience, skills and qualifications in your application materials to help with screening and prioritizing candidates. Such screening may amount to a form of solely automated decision-making. We also use AI for administrative support, like scheduling and recording interviews and summarizing interview notes. Our recruiting teams remain responsible for all hiring decisions and are involved throughout the process.

Depending on where you are located, you may have certain rights available to you in relation to Braze’s use of AI:

To opt out of AI-assisted review of your application, please click the “Learn More” at the end of the application form below and follow the instructions before submitting your application. Please note, if you apply to multiple roles at Braze, you will need to opt out in relation to each application.
To exercise other types of rights, such as rights to request further information about how AI is used in our recruitment process, to request a manual review of any decision made or to contest a decision, please contact us at [email protected].

Please contact us at [email protected] with any questions. To find out more about our hiring process, check out this page.

Notice Regarding Automated Employment Decision Tool (NYC Local Law 144)

Our use of AI during the application review process may include the use of automated employment decision tools. Pursuant to New York City Local Law 144, for roles based in New York City, or if you reside in New York City, you have the right to request an alternative selection process or a reasonable accommodation instead of AI-assisted review.

To opt out of AI-assisted review of your application, please click the “Learn More” button below and follow the instructions before submitting your application. Please note, if you apply to multiple roles at Braze, you will need to opt out in relation to each application. Please submit any other request to our Talent Acquisition team at [email protected] promptly after applying. Summaries of the most recent bias audit results for such tools are available here.

Please see our Candidate Privacy Policy for more information on how Braze processes your personal information during the recruitment process and, if applicable based on your location, how you can exercise any privacy rights.

Explore more jobs