Impress employers and recruiters.
Choose from hundreds of resume examples.

Target Resume Now

About the Role

KUGU is seeking a (Senior) Backend Engineer to join their cross-functional backend team in Berlin. The role involves building and evolving core platform services, designing and implementing new features, improving data pipeline reliability, and contributing to shared libraries and infrastructure. This is a hands-on role requiring production code writing, code reviews, and end-to-end ownership from design to deployment.

Responsibilities

Design and implement new features
Improve data pipeline reliability
Contribute to shared libraries and infrastructure tooling
Write production code
Review code
Take end-to-end ownership from design to deployment

Requirements

5+ years of backend engineering experience
At least 3 years of experience in the JVM ecosystem
Strong Kotlin experience (coroutines, extension functions, sealed classes)
Production experience with Apache Kafka (ideally Kafka Streams, schema evolution, consumer group management)
Solid understanding of REST API design, event-driven architecture, and distributed systems trade-offs
Confidence working with PostgreSQL (query optimization, indexing, schema migrations)
Experience deploying containerized services on AWS (ECS or EKS)
Familiarity with Terraform or another IaC tool
Ability to own a feature end-to-end: RFC → implementation → testing → deployment → monitoring

Skills

Kotlin
Spring Boot 3.x
OpenSearch
Apache Parquet
Hadoop
Spring Batch
PostgreSQL
Redis
DynamoDB
Amazon Redshift
Keycloak
OAuth2
OIDC
Spring Security
AWS KMS
Secrets Manager
Terraform
AWS (ECS, ECR, Lambda, API Gateway, S3, SQS/SNS, SES, Glue, AWS Batch, Step Functions, CloudFront, WAFv2)
GitLab CI/CD
Docker
Jib
Prometheus
Grafana
AWS CloudWatch
Apache Kafka
Kafka Streams
REST API design
Event-driven architecture
Distributed systems
Query optimization
Indexing
Schema migrations
Containerized services
IaC (Infrastructure as Code)

Location

Berlin

Work Type

Full-time
Hybrid

Experience Level

Senior

Benefits

Travel expenses
Pension scheme
Vouchers
Workations
Flexible working models
Cold drinks
Tasty snacks
Team activities
Pool car
Sharing marketplace
Control of heating and utility bills
Language courses

About the Company

KUGU makes buildings CO-2-neutral and actively shapes the energy transition.
Our decarbonisation platform supports the housing industry with innovative products to achieve their emission targets cost-effectively!
We are 50+ techies, designers, and business enthusiasts from 15+ countries.
We are united by a passion for sustainable technology that really makes a difference.
Our mission: To make every building in Europe energy-efficient and climate-neutral.
Our solution: IoT platform for smart metering, remote maintenance, and AI-supported energy optimization.
Our customers: 100+ housing companies, energy service providers, and property managers in Germany, Austria, and Switzerland.