Lead Architect - Infrastructure as a Service (IaaS)

Interval; Berlin; Remote; EUR 80.000 - 120.000; Vollzeit

Zusammenfassung

A technology consulting company is seeking an experienced Lead Architect specializing in Infrastructure as a Service (IaaS). This role involves defining and evolving the software architecture for a hybrid cloud platform that supports self-service capabilities. The ideal candidate has 7–10 years of experience in software architecture and strong Python engineering skills. This freelance opportunity offers flexibility and competitive pay.

Leistungen

Flexible working hours

Access to exciting projects

Support for career advancement

Qualifikationen

• 7–10 years in software architecture or infrastructure platform engineering.
• Fluent English (C1 level or above).

Aufgaben

• Design architecture for infrastructure orchestration, microservices, and messaging.
• Lead the development of microservices-based, API-first architectures.
• Coordinate with management and delivery teams.
• Ensure delivery of architecture-compliant solutions throughout development.

Kenntnisse

Strong Python engineering skills (FastAPI, Pydantic, Celery)

Expertise in modular / distributed systems and high availability architecture

Microservices and distributed systems design (synchronisation, replication, consensus)

Data modelling (relational, document, graph)

REST API design and development

Authentication / Authorisation (IAM / RBAC / OAuth / OIDC)

Service discovery systems and Kubernetes concepts

Observability concepts (logs, metrics, traces)

Proficiency in software architecture patterns (DDD, event-driven design)

Ausbildung

Architecture, cloud infrastructure, or security certifications (e.g. TOGAF, AWS / Azure / GCP)

Tools

Observability tools (Prometheus, Grafana, OpenTelemetry)

Jobbeschreibung

Job Description

This is a remote position.

Job Title : Lead Architect – Infrastructure as a Service (IaaS)

Location : Remote (occasional travel to the client office in Germany required)

Start Date : ASAP

Contract Type : Freelance / Contract, Full-Time

Overview

We are seeking an experienced Lead Architect specialising in Infrastructure as a Service (IaaS) to define and evolve the software architecture for a large-scale, hybrid cloud platform. The platform enables application teams to develop, deploy, and operate their software products with self-service capabilities for infrastructure, data, lifecycle management, build and delivery, and operational services. It spans both private and public cloud environments.

About the Role

The IaaS product line provides core infrastructure services—network, compute, and storage—to other product lines and tenants within the programme. This role is central to designing a modern, scalable, software-driven infrastructure layer that supports the platform’s strategic vision. You will drive technical architecture initiatives, ensure alignment across domains, and guide engineering teams in delivering secure, reliable, and maintainable solutions.

Responsibilities

Architecture Design & Development

Design architecture for infrastructure orchestration, microservices, messaging, and discovery systems

Develop and maintain APIs (e.g. REST with FastAPI) for infrastructure services

Integrate asynchronous processing using Celery, RabbitMQ, or Kafka

Establish scalable, observable, and secure service design patterns

Apply domain-driven design principles and modern Python-based frameworks, including Pydantic

Strategic Architecture Leadership

Lead the development of microservices-based, API-first architectures for provisioning workflows

Model complex infrastructure relationships using graph-based approaches

Contribute to the technical roadmap and evaluate architectural risks and enablers

Cross-Domain Alignment & Guidance

Coordinate with product management, delivery teams, and peer architects

Represent architecture in design forums and cross-functional reviews

Mentor engineering teams on architecture and best practices

Implementation Oversight

Ensure delivery of architecture-compliant solutions throughout development

Enforce standards for observability, security (IAM / OAuth2), and reliability

Promote clean architecture, reusable components, and maintainable codebases

Quality & Continuous Improvement

Conduct regular architecture reviews

Oversee documentation of designs, specifications, and RFCs

Monitor trends in infrastructure automation, DevOps, and distributed system design to inform improvements

Requirements

Eligibility

Residency in the EU or UK

Must-Have Experience

7–10 years in software architecture or infrastructure platform engineering

Strong Python engineering skills (FastAPI, Pydantic, Celery)

Expertise in modular / distributed systems and high availability architecture

Microservices and distributed systems design (synchronisation, replication, consensus)

Data modelling (relational, document, graph)

REST API design and development

Authentication / Authorisation (IAM / RBAC / OAuth / OIDC)

Message broker design (async / sync patterns)

Service discovery systems and Kubernetes concepts (namespaces, services, deployments, ingress)

Observability concepts (logs, metrics, traces) and associated tooling

Proficiency in software architecture patterns (DDD, event-driven design)

Must-Have Language Skills

Fluent English (C1 level or above)

Preferred Experience

Architecture, cloud infrastructure, or security certifications (e.g. TOGAF, AWS / Azure / GCP)

Experience with observability tools (Prometheus, Grafana, OpenTelemetry)

Exposure to IaaS service delivery and API-first platform design

Benefits

As a freelancer / contractor with us, you will enjoy flexible working hours and the freedom to choose your own projects. Our platform gives you access to exciting projects in various industries and supports you in advancing your career. You'll benefit from competitive pay and a dedicated team to help you with any questions you may have. Work independently and utilise our strong network to achieve your professional goals.