Senior Product Engineer – Backend

Flip

. Build reliable and scalable product experiences for Flip’s AI-powered employee experience platform .

Posted 9/22/2026full-timeRemoteSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong backend specialization with hands-on experience in Kotlin or Java, and proficiency in web frameworks like Micronaut or Spring. Capable of collaborating across full stack development while utilizing AI coding assistants and conducting user-driven product decisions.

Highest-signal resume keywords

KotlinJavaMicronautSpringSaaS Product Development

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Backend SpecializationWeb FrameworksAI Coding AssistantsInstrumentationA/B Testing

Soft Skills

Engineering JudgmentCuriosityAdaptabilityWillingness to Learn

Tools & Technologies

KubernetesHelmPostgreSQLRabbitMQApache Kafka

Industry Keywords

Agile EnvironmentsSaaSUser ExperienceProduct ManagementCustomer Success

Tech Stack

Tools & technologies

ApacheGrafanaJavaKafkaKotlinKubernetesPostgresRabbitMQSpring

About the role

Key responsibilities & impact

Build reliable and scalable product experiences for Flip’s AI-powered employee experience platform
Own backend systems and contribute across the full user journey
Work with APIs, data models, infrastructure, and product user experience
Join a product squad and collaborate with designers, product managers, and engineers across backend, frontend, mobile, and AI
Understand user problems and help shape product decisions
Rapidly prototype and validate ideas
Use AI to bridge gaps across frontend, mobile, and infrastructure work
Ship small, well-structured changes outside the backend stack when needed
Carry features through rollout and observe their impact
Conduct instrumentation, user conversations, or collaboration with Product Management and Customer Success as needed

Requirements

What you’ll need

Experience working on SaaS products in Agile environments
Hands-on experience with Kotlin or Java
Experience with a web framework such as Micronaut or Spring
Strong backend specialization and solid technical foundation
Willingness to work across the full stack, including web or mobile when needed
Experience using AI coding assistants such as Cursor, Claude Code, or Copilot, or willingness to adopt them
Strong engineering judgment, curiosity, adaptability, and willingness to learn
Fluent English at C1 level
Legally authorized to work in the European Union or the United Kingdom without visa sponsorship
Willingness to own features through rollout and observe their impact
Nice to have: experience pairing with designers or working from mockups/prototypes
Nice to have: instrumentation and experimentation experience, including A/B testing, Grafana, or Mixpanel
Nice to have: Kubernetes and Helm deployment experience
Nice to have: PostgreSQL experience
Nice to have: messaging systems experience with RabbitMQ or Apache Kafka

Benefits

Comp & perks

Remote-first work with flexibility to work from home
Occasional team events, workshops, or meetings in Berlin or Stuttgart offices with advance notice
E-Gym-Wellpass membership covered
Job bike leasing
Regular team events and culture days
Ability to work abroad in the European Union
Tools, practices, and team environment for professional growth
Relaxed working atmosphere
Opportunity to shape Flip and grow toward personal goals