Legion
Technology
ChiefArchitect
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“Chief Architect at Legion. Skills: Architecture, AI, Distributed systems, Platform strategy. Serve as senior-most technical authority. Dive into code”
What You'll Achieve.
Shape technical foundation for product innovation; Turn bold product ambitions into scalable, reliable production systems
Industry & Context.
Diagnose root causes; Performance bottlenecks; Troubleshooting; Root cause analysis
What They're Looking For.
Must Have
Hands-on technical leader, Deep technical credibility, Operate fluidly between code-level decisions and long-term platform strategy, Pragmatic, decisive, opinionated, Comfortable making hard tradeoffs
Nice to Have
Built and scaled mission-critical software, Used by large enterprise customers
What You'll Do.
Serve as senior-most technical authority
Guide technical direction
Lead technical decisions
Write reference implementations
Write architecture decision records
Write technical specifications
Establish clear direction
Make technical decisions
Challenge architectural drift
Challenge unnecessary complexity
Challenge weak abstractions
Challenge short-term decisions
Partner with engineering leaders
Define long-term architecture
Establish engineering-wide standards
Serve as final architectural authority
Identify opportunities to reduce complexity
Improve system efficiency
Accelerate engineering velocity
Unlock new product capabilities
Surface technical debt
Surface architectural risk
Surface platform constraints
Create pragmatic migration paths
Maintain customer trust
Maintain backward compatibility
Maintain delivery speed
Ensure architecture supports enterprise configurability
Ensure architecture supports extensibility
Architect AI-native product capabilities
Define architecture for production AI systems
Make build versus buy decisions
Partner closely with Product
Turn complex problems into production systems
Establish standards for AI system quality
Ensure AI capabilities remain differentiated
Ensure AI capabilities remain defensible
Ensure AI capabilities remain enterprise-ready
Ensure AI capabilities remain integrated
Drive architecture for large-scale systems
Lead technical decisions
Improve architecture for observability
Use production data as input
Use incidents as input
Use escalations as input
Use customer patterns as input
Ensure architectural decisions support global scale
Ensure architectural decisions support data residency
Ensure architectural decisions support enterprise integrations
Ensure architectural decisions support configurability
Ensure architectural decisions support extensibility
Ensure architectural decisions support platform leverage
How You'll Work.
Team & Collaboration
Partner directly with Staff, Principal, and senior engineering leaders; Partner closely with Product, Data Science, and Engineering
Communication Scope
Technical designs; Technical specifications; Design reviews; Code-level discussions
Full Job Description
Chief Architect Hybrid, Bucharest, Romania JOB OVERVIEW Legion Technologies is building the AI-powered operating system for the hourly workforce. We are hiring a Chief Architect to serve as Legion’s most senior hands-on technical leader and to shape the technical foundation that will power the next decade of product innovation. This is not a strategy-only or advisory role. The Chief Architect must live close to the code, go deep with engineering teams, challenge assumptions, write and review technical designs, make high-consequence architecture decisions, and help turn bold product ambitions into scalable, reliable production systems. This person will own architecture and technical decision-making for the most complex parts of Legion’s Workforce Management platform, including AI, optimization, forecasting, scheduling, distributed systems, data platforms, real-time decisioning, enterprise scalability, security, compliance, and developer productivity. The ideal candidate has built and scaled mission-critical software used by large enterprise customers, has deep technical credibility with senior engineers, and can operate fluidly between code-level decisions and long-term platform strategy. They are pragmatic, decisive, opinionated, and comfortable making hard tradeoffs when simplicity, scalability, reliability, or customer trust require it. This role reports to the Head of Product, Engineering, and Support. This is an open role currently being filled on an interim basis by the CEO. RESPONSIBILITIES AND DUTIES Hands-On Architecture and Technical Decision-Making Serve as Legion’s senior-most hands-on technical authority for complex architecture, system design, and platform evolution. Personally dive into code, design documents, production incidents, performance bottlenecks, and implementation tradeoffs to diagnose root causes and guide technical direction. Lead the hardest technical decisions across AI systems, optimization engines, distributed systems, data architectur
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