Founding Backend Engineer(Go)

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Founding Backend Engineer(Go) to join one of our clients ' team in Berlin. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you. Key Responsibilities: • Develop and maintain backend applications using Go • Design and optimize cloud-based solutions using AWS services (EC2, Lambda, S3, SQS, SNS, etc.) • Design, use and manage databases, including PostgreSQL, Neo4J, Redis, and Elasticsearch • Develop, manage, and optimize containerized applications using Docker • Automate processes using Bash/Python scripting • Optimize and maintain RESTful APIs, ensuring security and performance • Work closely with frontend engineers, DevOps, and product team to deliver robust applications • Monitor, debug, and improve backend performance, reliability, and scalability • Implement caching, messaging queues, and event-driven architectures where needed • Build whole platform from scratch • 5+ years of GoLang experience • Hands-on coding mentality; can build things from scratch and familiar with different architectures • Hands-on experience with Docker, Kubernetes (EKS) and containerized workloads • Experience designing RESTful and gRPC APIs and using frameworks like Gin • Hands-on experience with messaging systems (e.g., SQS , Kafka ) • Experience with CI/CD pipelines (GitHub Actions or similar) • Experience operating PostgreSQL (RDS / Aurora), Neo4J(or similar) • Experience with AI agents , LLM-based systems, MCP, RAG, Prompts, Embeddings, Vector, etc • Experience with AI stack (AWS Bedrock, LangChain, pgvector or similar) • Experience with Infrastructure as Code (Terraform) • Experience with monitoring, logging, observability (Grafana, OpenTelemetry, Prometheus) • Ability to troubleshoot production issues end to end • Experience with Coding CoPilots (Claude Code, GitHub Copilot, AWS CodeWhisperer, Codex, etc.) • Experience supporting production SaaS platforms • Strong understanding of SaaS integrations and app-to-app permission flows • High ownership mentality, startup mindset, and ability to move quickly • Experience in startup or scale-up environments • Low ego, high commitment, and a true tech startup mentality • Strong problem-solving skills and ability to work in a collaborative environment • Excellent English communication skills Nice-to-have requirements: • Experience working with Java • Ability to code in Python • Experience with security architecture, identity security, or security engineering • Familiarity with compliance frameworks (NIS2, DORA, ISO 27001, SOC 2) • Experience with AWS in production environments • Exposure to graph-based modeling (identity graph, access graph, risk graph) • Familiarity with compliance frameworks (NIS2, DORA, ISO 27001, SOC 2) • Understanding of OAuth/OIDC, API tokens, IdP, scopes, SSO, SCIM, roles, RBAC/ABAC, service accounts • Familiarity with cloud identity and security controls (e.g. IAM, CloudTrail, Azure Active Directory / Entra ID ) • Hands-on with SIEM platforms such as Splunk, Microsoft Sentinel, or IBM QRadar • Experience designing permission models, identity graphs, or access control frameworks • Knowledge of tokenization, Zero Trust principles , least privilege, and continuous verification • Experience with Security related to AI/LLM systems, agent logic, or willingness to learn fast • Familiarity with AI agent behavior , LLM security, or agent sandboxing • Previous experience in cybersecurity , identity startups • You are a fan of rock or metal music • Excellent German communication skills Benefits: • Founding Team Member Equity — ESOPs in a cybersecurity comp