Principal Application Modernization Engineer - Liatrio

About Liatrio

At Liatrio , we don't just ship software — we enable real transformation.

We help large enterprises break free from legacy systems and truly enable AI across their organizations. We design and deliver secure, scalable, agentic AI-native platforms that reshape how teams build, deliver, and thrive at scale.

We live this every day by embedding deeply with clients to drive meaningful AI enablement — accelerating modernization, reducing risk, and creating lasting competitive advantage through production-grade AI systems. We use tools like Claude, Cursor, and Windsurf daily to move faster and deliver better outcomes.

if you're a technical leader who leads with AI and drives lasting change, this is where you belong.

About the Role

The Principal Application Modernization Engineer is a senior technical leader who defines the scope of technical work, owns the architectural direction of complex workstreams, and is accountable for the technical outcomes of the engagement.

You operate in ambiguity and make it clear. You walk into a legacy codebase, a stalled migration, or a cloud-native effort that's lost its footing, and you quickly develop a credible read on what's actually happening and what needs to change. You make the hard technical calls — and communicate them in a way that builds trust with both the engineers executing the work and the technical leaders on the client side.

What You'll Do

Technical Ownership and Architecture

Define the scope of technical work related to deliverables and milestones of the engagement

Own the architectural direction of your workstream — making key technical decisions, documenting tradeoffs, and ensuring the team is building toward something coherent and maintainable

Responsible for code quality, architecture, and technical direction across the team

Write and review production code across the stack — your technical judgment sets the bar, and you're in the work alongside the team

Integrate AI and LLM capabilities into client applications — designing the architecture for agentic workflows, RAG pipelines, intelligent automation, and AI-augmented developer tooling, and guiding your team through implementation

Anticipate technical risk before it becomes delivery risk — surface issues early, define mitigation strategies, and communicate proactively

Participate in scoping discussions and SOW architecture for new and existing customers

Generate ideas, be willing to fail fast, and demonstrate with POCs

Drive knowledge sharing in and out of client engagements

Client Technical Engagement

Serve as the senior technical point of contact for your workstream — engaging directly with client engineering managers and directors on architecture, delivery strategy, and technical risk

Build trusted relationships with clie