Senior Backend Engineer - Focus Insights API

About The Opportunity

Become part of the Ninetailed Team, pioneer of composable personalization and experimentation within the Contentful family.

At Ninetailed by Contentful, you will revolutionize personalization & experimentation for leading businesses worldwide. As a Senior Backend Engineer, you’ll play a key role in shaping and scaling our Insights API, ingesting billions of analytics events. Your work will enable our customers to generate impactful, data-driven insights through an API driven query engine.

What to Expect

• Own and scale our Insights API, focusing on high-performance event ingestion and querying systems.
• Collaborate closely with data engineers and other teams building our SDKs & APIs, ensuring smooth data integration and optimized workflows.
• Design and build APIs that can handle high volumes of traffic, while providing an outstanding developer experience.
• Contribute to system architecture by bringing your ideas and experience to the table to optimize API design.
• Maintain stability and optimize for operational and cost efficiency.
• Drive observability, ensuring the services you build are well-instrumented, tested, and monitored.
• Ensure compliance with GDPR and other privacy regulations.

What You Need To Be Successful

• Proven experience building high-traffic APIs and data products for processing large volumes of events.
• Strong proficiency with server-side TypeScript and API protocol design.
• Familiarity with API Contracts (e.g., ts-rest, tRPC) & Data Contracts (e.g., ProtoBuf, Avro).
• Experience working with Cloudflare Workers is a plus.
• Proficiency in using CI/CD pipelines (e.g., GitHub Actions, GitLab CI) and maintaining automated tests with tools like Jest or Mocha.
• Familiarity with Google Cloud Platform (Pub/Sub, BigQuery, CloudRun, GCS) is beneficial.
• Experience with Infrastructure as Code, ideally Terraform.
• Proactive approach with a high sense of ownership.
• Strong collaborative mindset with experience working cross-functionally.
• Ability to think strategically and anticipate future challenges or opportunities.
• Great communication skills in English, especially when explaining complex technical concepts.

What’s in it for you?

• Join an ambitious tech company reshaping the way people build digital experiences.
• Full-time employees receive Stock Options for the opportunity to share in the success of our company.
• Fertility and family building benefits, including a lifetime reimbursable wallet to support your growing family.
• We value Work-Life balance and You Time! A generous amount of paid time off, including vacation days, sick days, education days, compassion days for loss, and volunteer days.
• Time off to care for and focus on your growing family.
• Use your personal annual education budget to improve your skills and grow in your career.
• Enjoy a full range of virtual and in-person events, including workshops, guest speakers, and fun team activities, supporting learning and networking exchange beyond the usual work duties.
• An annual wellbeing stipend to care for your physical, financial, or emotional health.
• A monthly communication phone/internet stipend and phone hardware upgrade reimbursement.
• New hire office equipment stipend for hybrid or distributed employees. Get the gear you need to work at your best.

Who are we?

Contentful is the intelligent composable content platform that unlocks all of an organization’s digital content to deliver impactful customer experiences, making content a strategic business asset. The Contentful Platform, Contentful Studio, and the Contentful Ecosystem combine the flexibility of composable content with the intelligence of AI, empowering digital teams to drive business momentum through collaboration, speed, and scale. Contentful powers innovative content experiences across brands, regions, and channels for organizations around the world, including nearly 30% of the Fortune 500. Nearly 800 people from more than 70 nations contribute their energy and creativity to Contentful, working from hubs in Berlin, Denver and distributed around the world.

Everyone is welcome here!

“Everyone is welcome here” is a celebrated component of our culture. At Contentful, we strive to create an inclusive environment that empowers our employees. We believe that our products and services benefit from our diverse backgrounds and experiences and are proud to be an equal opportunity employer. All qualified applications will receive consideration for employment without regard to race, color, national origin, religion, sexual orientation, gender, gender identity, age, physical [dis]ability, or length of time spent unemployed. We invite you to apply and join us!