Senior software engineer

Senior Backend Engineer with Fullstack & Data Engineering Capabilities

• Amazon Web Services (AWS)
• Apache Flink
• Apache Kafka
• Backend3 J.
• Go (Programmiersprache)
• Java (allg.)2 J.
• Kotlin
• Kubernetes
• Python
• Scala1 J.
• Softwareentwickler5 J.
• Typescript

found in profile description
Senior Backend Engineer | Fullstack & Data Capable | Node.js, Go, Kafka, AWS

Contractor with 10+ years delivering production systems across backend, data, and fullstack domains. Specialized in building event-driven platforms, APIs, and streaming pipelines using Node.js, Go, Kafka, and AWS. Comfortable leading greenfield builds and working solo or embedded in agile teams.

Backend: Node.js, Go, Kotlin, Java, Python, Spring Boot, REST, GraphQL
Data: Kafka, Kafka Streams, Flink, Spark, Hadoop, Redshift, PostgreSQL
Frontend: React, Angular, Next.js
Cloud/Infra: AWS, Terraform, Kubernetes, CI/CD

? Open to backend, streaming, or fullstack remote contract roles (EU/global)
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As a senior backend engineer with fullstack and data engineering capabilities, I offer a robust and battle-tested skill set that spans real-time systems, distributed backend services, and cloud-native infrastructure.

? Backend Engineering
I specialize in building scalable, event-driven backend systems using Node.js, Go, Java, Kotlin, and Python. My projects include microservices, REST and GraphQL APIs, asynchronous messaging, and streaming systems.

Languages: Node.js, Go, Java, Kotlin, Python

Frameworks: Spring Boot, NestJS, Express

APIs: REST, GraphQL, WebSockets, gRPC

Messaging: Kafka (incl. Kafka Streams, Kafka Connect, Schema Registry, KSQL), RabbitMQ, AWS SQS/SNS

Architecture: Microservices, CQRS, DDD, event sourcing, greenfield setups

? Data & Streaming Engineering
I’ve built low-latency, high-throughput pipelines for data ingestion, stream enrichment, and processing. I’m experienced with both batch and real-time architectures and have optimized pipelines for performance and scale.

Technologies: Kafka, Apache Flink, Apache Spark, Hadoop

Data stores: PostgreSQL, TimescaleDB, Redshift, Cassandra, MySQL, DynamoDB

Use cases: stream processing, CDC, event-based workflows, log aggregation

Pipelines: ingestion, enrichment, and deduplication at scale

Strong understanding of partitioning, windowing, watermarking, and state stores

☁️ Cloud Infrastructure
I’ve led projects involving full AWS and hybrid-cloud migrations. My cloud skillset covers both service deployment and infrastructure automation.

Platforms: AWS, Azure

Services: Lambda, ECS, EKS, S3, Step Functions, IAM, CloudWatch

IaC: Terraform, Pulumi, CloudFormation

CI/CD: GitHub Actions, GitLab CI, Jenkins, Azure DevOps

Observability: OpenTelemetry, Prometheus, Grafana, ELK stack

?️ Fullstack Development
While backend is my core strength, I’ve also built and maintained fullstack systems including microfrontend architectures. I can take ownership of both backend APIs and their integration into modern UIs.

Frontend: Angular (v1 to latest), React.js, Next.js

State: RxJS, Redux

UI responsibilities: dashboard builds, form workflows, admin interfaces, secure frontend/backend integration

? DevOps & Automation
I build fully automated pipelines and deployment environments that scale with the team and system.

Containerization: Docker, Kubernetes (Helm, ArgoCD, KEDA)

Secrets and IAM handling across environments

GitOps, rollback-safe deployments, and blue/green strategies

Test automation: JUnit, Cypress, K6, Gatling

? Domain Expertise
I’ve delivered solutions in ERP, eCommerce, banking, payment, logistics, and industrial systems.

Built event-driven banking and POS systems

Integrated eCommerce APIs and order processing pipelines

Designed scalable Kafka/WebSocket gateways for real-time event distribution

Contributed to data platforms used in geospatial and IoT contexts

? Soft Skills & Delivery

Lead developer and architecture ownership experience

Comfortable working solo or in distributed agile teams

Focused on production-ready, maintainable software

Fast learner, self-sufficient, highly effective under pressure

? Available for remote contract roles in backend, streaming, or fullstack engineering.