20.10.2026 aktualisiert
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Staff Backend Engineer – Java / Rust / AWS · Agentic AI (Claude, Bedrock, MCP)
Buchholzer Str.5, Deutschland
Nur Remote
B.Tech in Computer Science and EngineeringÜber mich
Staff backend engineer, 11+ years. I build distributed systems in Java/Spring Boot and Rust on AWS, and agentic AI platforms (Claude Agent SDK, Bedrock, MCP gateways) that turn tickets into reviewed PRs. Kafka, OpenSearch, OpenTelemetry/Grafana. Remote from Berlin (CET), English, available now.
Skills
AI AgentsOpenTelemetryBedrockJavaAPIsAmazon Web ServicesCloud-EngineeringHibernatePythonPostgreSQLRedisRust (Programming Language)AWS CDKCloud PlatformLarge Language Models
Java & Spring Boot Development
Expert-level knowledge in Java 17/21 and Spring Boot 3.5 with 11+ years of experience. Proficiency in Spring Data JPA, Hibernate, Flyway, MapStruct, Spring Retry, Okta, and Kotlin with Vert.x for building distributed backend systems.
AWS Cloud Engineering
Advanced AWS expertise spanning 7+ years, covering ECS/Fargate, Lambda, Batch, Step Functions, Bedrock, Aurora, DynamoDB, ElastiCache, S3, SQS, SNS, EventBridge, API Gateway, Cognito, Secrets Manager, SSM, ECR, EFS, ALB, WAF, and IAM.
AI & Agentic Systems
Advanced experience with agentic AI platforms using Claude Agent SDK, Amazon Bedrock (Claude Opus/Sonnet), MCP servers and gateways (APISIX), LiteLLM, Langfuse, Cohere Embed v4, pgvector (HNSW), DuckDB code maps, tree-sitter graphs, FSM multi-agent orchestration, and LLM evaluation.
Search & Data at Scale
Advanced skills in OpenSearch Serverless (classic and NextGen), PostgreSQL/Aurora, pgvector, Redis (GEO, Lua), DynamoDB, ClickHouse, DuckDB, and Parquet for large-scale data ingestion and search platforms processing millions of records daily.
Streaming & Messaging
Advanced experience with Redpanda/Kafka, Redpanda Connect, CloudEvents, Avro and Schema Registry, SQS/SNS FIFO, EventBridge, and transactional outbox patterns for event-driven and reliable distributed architectures.
Rust Development
Advanced Rust skills with 2+ years of experience using Actix-web, axum, Tokio, Diesel/diesel-async, sqlx, DuckDB, serde, tracing, redis-rs, lambda_runtime, and aws-sdk-rust for high-performance backend services.
Observability
Advanced observability capabilities using Grafana Cloud (Loki logs, Tempo traces), OpenTelemetry (OTLP, Grafana OTel agent, Rust tracing), CloudWatch (Logs Insights, custom metrics, alarms), Sentry, Langfuse, and Prometheus.
IaC & CI/CD
Advanced infrastructure-as-code and CI/CD experience spanning 6+ years with AWS CDK (TypeScript, Python), CloudFormation, Terraform, Azure DevOps (5-stage pipelines), GitHub Actions, and Docker.
Testing & Security
Advanced testing and security practices using JUnit 5, Mockito, WireMock, Testcontainers, LocalStack, ElasticMQ, k6, cargo test, pytest, bloc_test, mocktail, JaCoCo, SonarQube, Snyk, gitleaks, cargo-audit, and Trivy.
Python
Working knowledge of Python with experience using Claude Agent SDK, boto3, pytest, and moto for scripting and cloud automation tasks.
Expert-level knowledge in Java 17/21 and Spring Boot 3.5 with 11+ years of experience. Proficiency in Spring Data JPA, Hibernate, Flyway, MapStruct, Spring Retry, Okta, and Kotlin with Vert.x for building distributed backend systems.
AWS Cloud Engineering
Advanced AWS expertise spanning 7+ years, covering ECS/Fargate, Lambda, Batch, Step Functions, Bedrock, Aurora, DynamoDB, ElastiCache, S3, SQS, SNS, EventBridge, API Gateway, Cognito, Secrets Manager, SSM, ECR, EFS, ALB, WAF, and IAM.
AI & Agentic Systems
Advanced experience with agentic AI platforms using Claude Agent SDK, Amazon Bedrock (Claude Opus/Sonnet), MCP servers and gateways (APISIX), LiteLLM, Langfuse, Cohere Embed v4, pgvector (HNSW), DuckDB code maps, tree-sitter graphs, FSM multi-agent orchestration, and LLM evaluation.
Search & Data at Scale
Advanced skills in OpenSearch Serverless (classic and NextGen), PostgreSQL/Aurora, pgvector, Redis (GEO, Lua), DynamoDB, ClickHouse, DuckDB, and Parquet for large-scale data ingestion and search platforms processing millions of records daily.
Streaming & Messaging
Advanced experience with Redpanda/Kafka, Redpanda Connect, CloudEvents, Avro and Schema Registry, SQS/SNS FIFO, EventBridge, and transactional outbox patterns for event-driven and reliable distributed architectures.
Rust Development
Advanced Rust skills with 2+ years of experience using Actix-web, axum, Tokio, Diesel/diesel-async, sqlx, DuckDB, serde, tracing, redis-rs, lambda_runtime, and aws-sdk-rust for high-performance backend services.
Observability
Advanced observability capabilities using Grafana Cloud (Loki logs, Tempo traces), OpenTelemetry (OTLP, Grafana OTel agent, Rust tracing), CloudWatch (Logs Insights, custom metrics, alarms), Sentry, Langfuse, and Prometheus.
IaC & CI/CD
Advanced infrastructure-as-code and CI/CD experience spanning 6+ years with AWS CDK (TypeScript, Python), CloudFormation, Terraform, Azure DevOps (5-stage pipelines), GitHub Actions, and Docker.
Testing & Security
Advanced testing and security practices using JUnit 5, Mockito, WireMock, Testcontainers, LocalStack, ElasticMQ, k6, cargo test, pytest, bloc_test, mocktail, JaCoCo, SonarQube, Snyk, gitleaks, cargo-audit, and Trivy.
Python
Working knowledge of Python with experience using Claude Agent SDK, boto3, pytest, and moto for scripting and cloud automation tasks.
Erfahrung
Berufserfahrungmehr als 10 Jahre
Freelancer seit2025
Sprachen
Englischverhandlungssicher
Projekthistorie
Staff-level individual contributor on AutoNation's peer-to-peer vehicle marketplace (Gather). Responsibilities include agentic AI engineering platform, search and data ingestion, and connected-vehicle telemetry across 20+ Rust and Java services on AWS. Projects include the Gather Agentic Factory autonomous AI engineering platform, Vehicle Search and MarketCheck Data Platform on OpenSearch Serverless, Vehicle Service-Recommendation Engine, User Location and Trip Telemetry Flow, and Event Architecture and Production Forensics.
Global digital-engineering firm. Led backend architecture and delivery for client platforms in automotive, banking and capital markets, mentoring squads and owning AWS, Kafka and CI/CD foundations. Projects included a Vehicle Inspection Platform (serverless AWS backend with API Gateway and Java 17 Lambdas), an SME Loan Management System (fault-tolerant architecture on AWS EKS, RDS, SQS, SNS), and a Global OTC Trading Platform (microservices processing 50K+ trades a day with exactly-once Kafka streams).
Siemens digital-transformation unit. Built IoT data and microservice platforms for smart-building energy analytics, moving a monolith to cloud-native Spring Boot on AWS. Developed the Site Controls Enterprise Portal, exposing REST APIs, splitting the monolith into Spring Boot microservices, implementing Apache Kafka for messaging, and enforcing quality gates with JUnit 5, Cucumber, and SonarQube.