Senior Platform Software Engineer I
Braze · London
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 u