Level
Senior
Location
Graz
Working Model
Hybrid, Onsite
Job Field
IT, Security, Back End
Employment Type
Full Time
Contract Type
Permanent employment

Job Summary

In this role, you will optimize backend services in Go and TypeScript, design high-availability APIs, and implement security and data architecture strategies for large telemetry datasets.

Job Technologies

Your role in the team

Scale the backend and its data: Own the scaling strategy for Go and TypeScript services handling 250k+ requests per second, optimize ingestion pipelines into ClickHouse and PostgreSQL, and design partitioning, retention, and hot/cold tiering for the multi-year telemetry dataset.
Unify the API landscape: Lead the evolution of go-e's APIs into one long-term platform for internal microservices and external B2B/B2C users, with contract-first design (OpenAPI, gRPC, GraphQL), clear governance, and backward-compatible versioning.
Build the API gateway: Design high-performance routing, rate-limiting, and transformation layers that securely expose core services under strict authorization policies.
Own backend security: Act as the architectural owner for identity, authentication, and authorization as a shared foundation across APIs, telemetry, CI/CD, and observability, including RBAC, fine-grained access policies, Zero Trust service-to-service communication, and tenant isolation.
Create a white-label telemetry platform: Architect a modular ingestion and processing engine that runs multi-region, single-tenant, or at the edge to meet data residency requirements, and can be rebranded and configured for OEM and partner solutions.
Lead technically: Drive key architectural decisions through RFCs and ADRs, build consensus across backend, mobile, and other teams, and mentor senior engineers through coaching, architectural code reviews, and delegated ownership of core sub-systems.

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Our expectations of you

Qualifications

Proven Staff-Level Leadership: Track record as a Strong Senior/Staff Engineer driving cross-cutting architectural vision across multiple teams and complex domains.
High-Throughput Backend Mastery: Expert-level mastery of Go and TypeScript/Node.js in high-concurrency, event-driven distributed environments.

Experience

Security & Identity Mastery: Extensive experience engineering distributed security models, including OAuth2/OIDC, PKI, JWT, fine-grained authorization, and RBAC within high-scale platforms.
Expertise in Unified API Design: Extensive experience in designing, deploying, and maintaining unified, public-facing and internal API ecosystems with strict backward compatibility and security requirements.
Multi-Tenant & Sovereign System Design: Hands-on experience architecting multi-tenant or white-label platforms, with direct knowledge of data sovereignty constraints, localized data storage, and regional data compliance (e.g., GDPR, local residency laws).
Data Engineering at Scale: Extensive experience with OLAP-optimized databases (e.g., ClickHouse) and high-scale relational data stores (PostgreSQL), focusing on high-write ingestion, query optimization, and schema migration strategies.