Senior Backend Engineer (Kotlin)
Senior Backend Engineer (Kotlin)

Senior Backend Engineer (Kotlin)

Full-Time 43200 - 72000 £ / year (est.) No home office possible
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Synthesized

At a Glance

  • Tasks: Design and develop data infrastructure while writing high-quality code.
  • Company: Join an ambitious VC-backed startup redefining software testing with AI.
  • Benefits: Competitive salary, equity, 33 days leave, and hybrid working options.
  • Why this job: Make a real impact in tech while collaborating with smart, ambitious teams.
  • Qualifications: Expertise in Java/Scala/Kotlin and familiarity with cloud platforms.
  • Other info: Enjoy a dynamic environment with excellent growth opportunities.

The predicted salary is between 43200 - 72000 £ per year.

About Us

It’s hard to build a reliable system. It’s harder to make sure that what you’ve built is really reliable. Synthesized is redefining software testing with agentic AI. Our platform automates test data, test cases, and test environments - empowering enterprise teams to ship faster, reduce compliance risks, and modernise QA at scale. Our products are used by some of the world’s leading organizations, such as Deutsche Bank, UBS, the European Commission, and others. We’re an ambitious VC-backed startup, having just gone through Series A with leading global investors including IQ Capital, Seedcamp, and Deutsche Bank. We have ambitious growth plans for 2025, and we are so keen for you to join us on the journey.

The Role

Reporting to the Director of Engineering, the Senior Software Engineer is a dynamic and growth focused engineer with a passion to contribute to solving real customer problems through efficient application of technical knowledge and tools. You will have a passion for B2B data platforms, processes, innovation and results delivery. Comfortable working with stakeholders, both internally and externally, you’ll be organised, with an attention to detail and the ability to grasp new tech quickly. You will be comfortable with a data- and analytics-led approach to maximise the product growth.

Key Responsibilities

  • Working alongside with the Director of Engineering and the engineering team to design components of the data infrastructure
  • Writing clean, high-quality, high-performance, maintainable code
  • Develop and support software including applications, database integration, interfaces, and new functionality enhancements
  • Working on the performance and stability of the system
  • Coordinate cross-functionally to ensure project meets business objectives and compliance standards
  • Support test and deployment of new products and features
  • Participate in code reviews

About You

  • Expert knowledge of Java/Scala/Kotlin. Familiarity with Kotlin or willingness to learn.
  • Industrial experience with AWS/GCP/Azure.
  • Knowledge of common data products such as Hadoop, Spark, Airflow, PostgreSQL, S3, etc.
  • Problem solving/troubleshooting skills and attention to detail.

What We Offer

  • Competitive salary and meaningful equity
  • 33 days annual leave (including flexible national holidays)
  • Hybrid, flexible working from our London or New York office (3 days/week in our office space in Shoreditch)
  • Learning & development budget for coaching, courses, and conferences
  • Private medical, dental, and vision cover
  • Regular team socials and offsites
  • Working with a team that’s smart, ambitious, and deeply collaborative
  • Generous Family leave

Equal Opportunities

We are committed to an inclusive and diverse workplace at Synthesized. Synthesized is an equal opportunity employer. We do not discriminate based on race, ethnicity, colour, ancestry, national origin, religion, sex, sexual orientation, gender identity, age, disability, veteran status, genetic information, marital status or any other legally protected status.

Senior Backend Engineer (Kotlin) employer: Synthesized

At Synthesized, we pride ourselves on being an innovative and inclusive employer that values collaboration and personal growth. Our dynamic work culture fosters creativity and ambition, offering competitive salaries, generous annual leave, and a commitment to employee development through learning budgets and regular team socials. Join us in our Shoreditch office, where you'll be part of a passionate team dedicated to redefining software testing with cutting-edge technology.
Synthesized

Contact Detail:

Synthesized Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Backend Engineer (Kotlin)

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with communities online. The more people you know, the better your chances of landing that Senior Backend Engineer role.

✨Tip Number 2

Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those using Kotlin or related technologies. This gives potential employers a taste of what you can do and sets you apart from the crowd.

✨Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. Don’t forget to brush up on your problem-solving skills, as they’re crucial for a role focused on data platforms and system performance.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our ambitious team at Synthesized.

We think you need these skills to ace Senior Backend Engineer (Kotlin)

Java
Scala
Kotlin
AWS
GCP
Azure
Hadoop
Spark
Airflow
PostgreSQL
S3
Problem Solving
Attention to Detail
Data Infrastructure Design
Code Review

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior Backend Engineer role. Highlight your experience with Kotlin, Java, or Scala, and any relevant projects that showcase your skills in data infrastructure and software development.

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about B2B data platforms and how your background aligns with our mission at Synthesized. Keep it concise but impactful!

Showcase Problem-Solving Skills: In your application, don’t forget to mention specific examples where you've tackled complex problems or improved system performance. We love seeing how you approach challenges and deliver results!

Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It’s the easiest way for us to keep track of your application and ensure it reaches the right people!

How to prepare for a job interview at Synthesized

✨Know Your Tech Stack

Make sure you brush up on your knowledge of Java, Scala, and especially Kotlin. Be ready to discuss how you've used these technologies in past projects, and don’t shy away from sharing specific examples of challenges you faced and how you overcame them.

✨Understand the Company’s Mission

Familiarise yourself with Synthesized's approach to redefining software testing with agentic AI. Knowing their products and how they empower enterprise teams will show that you're genuinely interested in the role and the company’s vision.

✨Prepare for Problem-Solving Questions

Expect to tackle some technical problem-solving questions during the interview. Practice coding challenges or system design scenarios that relate to data infrastructure and performance optimisation, as these are key aspects of the role.

✨Show Your Collaborative Spirit

Since the role involves working cross-functionally, be prepared to discuss your experience collaborating with different teams. Share examples of how you’ve successfully coordinated with stakeholders to meet project objectives and compliance standards.

Senior Backend Engineer (Kotlin)
Synthesized
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