contentful

Senior Software Engineer - Personalization

Berlin, Germany full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

About The Opportunity

Become part of the Contentful Personalization Team and help shape how leading businesses deliver personalized digital user experiences.

As a Senior Software Engineer, you will solve complex customer problems and deliver value through end-to-end personalization solutions. You will work across high-performance backend services, developer-facing frontend tools and SDKs, infrastructure, and observability to help customers deliver personalized content experiences in a performant, reliable, and developer-friendly way.

You will bring a proactive approach to problem-solving, a high sense of ownership, and a continuous improvement mindset. You will use modern AI tools, including agentic coding workflows, thoughtfully to improve how you explore, build, test, and maintain software. You will also contribute actively to the team's Agile ways of working, understanding how planning, refinement, delivery, reviews, retrospectives, and continuous improvement fit together.

What To Expect?

Design, develop, and maintain high-performance backend services and APIs with a focus on reliability, scalability, and low latency.

Deliver end-to-end solutions across backend services, React-based frontend experiences, and developer-facing SDKs, libraries, and tools.

Implement complex CDN and edge-based caching solutions that allow users to retrieve personalized content in the most performant way.

Solve technical challenges in creative ways, balancing the trade-off between performance and elegant software architecture.

Continuously monitor and optimize system performance through benchmarking, while making sure systems are well instrumented for observability.

Implement defensive coding practices and guarantee correctness and maintainable code through automated testing.

Use AI-assisted and agentic coding tools responsibly to improve engineering workflows, while maintaining high standards for code quality, security, testing, and review.

Participate actively in Agile ceremonies, including planning, refinement, reviews, and retrospectives, to help the team deliver customer value and continuously improve.

Stay up to date with the latest technologies and constantly evaluate their potential use at Contentful.

What You Need To Be Successful?

Proven experience building APIs and services that efficiently handle large volumes of traffic.

Strong proficiency with server-side TypeScript and API protocol design.

Experience delivering full-stack solutions, including React-based frontend experiences and SDKs, libraries, or tools for developers.

Experience with serverless architectures, ideally edge compute environments such as Cloudflare Workers.

Experience with CDN operations and caching strategies to optimize system performance.

Hands-on experience with benchmarking, instrumenting code for observability, and performance optimization for large-scale systems.

Expertise in defensive coding practices, ensuring system robustness and fault tolerance.

Proficiency in using CI/CD pipelines and maintaining automated tests, including unit and end-to-end tests.

Experience using AI tools, including agentic coding workflows, to improve software delivery while applying sound engineering judgment.

A practical understanding of Agile delivery and how planning, refinement, implementation, reviews, and retrospectives support sustainable delivery and continuous improvement.

A proactive approach with a strong sense of ownership.

Great communication skills in English, especially when explaining complex technical concepts.

More details about our company benefits can be found at the following link: https://www.salesforcebenefits.com.
Contentful is now officially part of Salesforce.

Unleash Your Potential

When you join Salesforce, you’ll be limitless in all areas of your life. Our benefits and resources support you to find balance and be your best, and our AI agents accelerate your impact so you can do your best. Together, we’ll bring the power of Agentforce to organizations of all sizes and deliver amazing experiences that customers love. Apply today to not only shape the future — but to redefine what’s possible — for yourself, for AI, and the world.

If you need reasonable accommodations at any point during the application or interview process, please let your Recruiter know.

Equal Opportunity Statement

Salesforce is an equal opportunity employer and maintains a policy of non-discrimination with all employees and applicants for employment. What does that mean exactly? It means that at Salesforce, we believe in equality for all. And we believe we can lead the path to equality in part by creating a workplace that’s inclusive, and free from discrimination.

Know your rights: workplace discrimination is illegal. Any employee or potential employee will be assessed on the basis of merit, competence and qualifications – without regard to race, religion, color, national origin, sex, sexual orientation, gender expression or identity, transgender status, age, disability, veteran or marital status, political viewpoint, or other classifications protected by law. This policy applies to current and prospective employees, no matter where they are in their Salesforce employment journey. It also applies to recruiting, hiring, job assignment, compensation, promotion, benefits, training, assessment of job performance, discipline, termination, and everything in between. Recruiting, hiring, and promotion decisions at Salesforce are fair and based on merit. The same goes for compensation, benefits, promotions, transfers, reduction in workforce, recall, training, and education.

Please be aware of scammers who may fraudulently claim to be from Contentful. These types of fraud can occur through copycat websites, fake email addresses claiming to be from our company, or social media. We do not ask for your personal information, such as bank account numbers, identification numbers, etc., through social media or chat-based apps, nor do we request or send money to purchase business equipment. If you suspect fraud, please report it to your local authorities and contact us at

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT API integration CRM Javascript Operations Project Management Mid level

Likely questions

  1. Tell us about work you have done that is close to the Senior Software Engineer - Personalization role.
  2. How would you approach your first 30 days at contentful?
  3. Which of API integration, CRM and Javascript have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, CRM and Javascript.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Software Engineer - Personalization role because I can bring practical experience in API integration, CRM and Javascript, learn the team quickly, and contribute to the outcomes contentful needs from this hire.

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