Solution Architect/Tech Lead

Our client is a full-service telecommunications provider that develops and delivers multimedia and internet services for residential customers. It supplies services to independent cable network operators and utility companies via a fiber-optic backbone and also operates directly as an internet and TV service provider in selected regions.
 

We are looking for a Solution Architect/Tech Lead.
You are the technical authority and delivery anchor for the engagement. You own the architecture, govern all integration decisions, lead the team day-to-day, and are the primary technical counterpart to Enterprise Architect. You operate full-time from Sprint 0 through Sprint 8. This is a hands-on role. You review code, resolve blockers, write ADRs, define API contracts, and lead the Sprint 0 evaluation of Medusa.js and Lago against on-prem Kubernetes environment. You are also the person who presents technical decisions to the client and responds to technical challenges in real time.

Work model: Hybrid.

RESPONSIBILITIES

• Own the overall solution architecture: service decomposition, integration patterns, event flows, deployment topology, and security boundaries.

• Lead Sprint 0: Medusa.js and Lago evaluation, Kubernetes environment validation, QMC API discovery, CI/CD pipeline establishment, and Definition of Ready / Done.

• Define and govern the API contract layer between new BSS services and QMC - change management, versioning, and integration risk surfacing.

• Review code across all workstreams (frontend, backend, .NET, DevOps). Maintain quality standards.

• Write and maintain Architecture Decision Records (ADRs) for all significant technical choices.

• Act as primary technical counterpart to Enterprise Architect at all sprint reviews and architecture sessions.

• Ensure observability is first-class from Sprint 1: OpenTelemetry instrumentation, DataDog dashboards, structured logging, trace propagation.

• Lead the final Walking Skeleton demo in Sprint 8 and the technical handover to the company's Ops.

• Manage technical risk, scope creep, and dependency escalation to the Delivery Lead.

REQUIREMENTS

• Microservice architecture: 8+ years designing and delivering production microservice systems. API-first design, event-driven integration, decomposition trade-offs.

• Node.js / TypeScript: Hands-on capability. You write, review, and debug backend Node.js code - not just diagrams.

• .NET / C#: Sufficient to evaluate QMC integration complexity, review .NET code, and speak credibly with a .NET-focused client team.

• Kubernetes (on-prem): Production on-prem or self-managed cluster experience. Helm, networking, RBAC, resource management.

• Observability: OpenTelemetry, distributed tracing, Prometheus / DataDog. Designs observability in from the start.

• Legacy modernization: Strangler Fig, API facade, event-based decoupling. Experience building around retained systems.

• Client-facing communication: Comfortable presenting architecture to Enterprise Architects and non-engineering stakeholders.

• Agile delivery: Two-week sprint leadership. Definition of Done, acceptance criteria, technical risk management.

• Upper-intermediate level of English.

• Ability to visit the office occasionally.

NICE TO HAVE

1. Medusa.js, Lago, or composable commerce / billing platform experience.

2. Telco BSS / OSS domain knowledge.

3. Swiss or DACH market delivery experience.

4. German or French language skills.

We offer

• Remote work with occasional office visits

• An open, transparent and fun work culture.