Staff / Principal Engineer - AI-Native Engineering

TechTree; Jersey City (NJ); Hybrid; USD 150,000 - 210,000; Full time

Job summary

TechTree is seeking a hands-on technical leader to shape complex enterprise solutions in an AI-native engineering model. You will guide delivery teams through modernization, integration, and data-intensive product work.

You’ll own technical directions within major domains, coach engineers, and partner with product leaders to translate business needs into scalable technology strategies. Hybrid work in the NJ/PA area is expected.

Qualifications

• Demonstrable track record in modern software engineering of complex systems.
• Ability to translate business needs into actionable technology solutions.
• Hands-on delivery with AI-assisted/agentic development approaches.
• Evidence of coaching and upskilling other engineers.

Responsibilities

• Lead the technical design and evolution of complex enterprise applications.
• Embed AI-native engineering practices within delivery teams and leverage AI tooling.
• Mentor engineers, run architecture discussions, and influence standards without formal authority.
• Collaborate with product and stakeholders to explain options and drive informed decisions.
• Scale modernization efforts across a global engineering organization.

Skills

Hands-on leadership

AI-native software engineering

Solution architecture

Mentoring

Cross-functional collaboration

Excellent communication

Tools

Cloud platforms

APIs

Distributed systems

Test automation

Job description

Our client is a global insurance leader running complex, business-critical systems at enormous scale - and it is rebuilding how engineering works. Its technology organisation is moving to an AI-native model across the entire product lifecycle: from idea and design through development, testing, deployment and operations.

The foundations are already in place: AI-assisted and agentic software engineering, context and harness engineering, agent-based test automation, AI-driven reverse engineering of legacy applications and an AI-native product development lifecycle. Its strongest teams already perform at the level of good teams at major technology companies. The challenge now is scaling that across a global engineering organisation - and that is where you come in.

The role

This is neither a conventional individual-contributor role nor a traditional line-management role. It is a hands-on technical leadership position for engineers who can shape complex solutions, introduce new ways of working and act as multipliers across delivery teams.

You will work inside real delivery teams on legacy modernisation, systems integration and data-intensive products - not run workshops from the sidelines. At Principal level, you may own the technical direction of a major business domain.

What you’ll do

Engineering & solution architecture

Lead the technical design and evolution of complex, business-critical enterprise applications

Design robust, scalable solution architectures grounded in practical engineering

Review application portfolios, legacy architectures and integrations, and find ways to modernise and simplify

Translate business requirements, customer journeys and product needs into actionable technology solutions

Guide decisions on integration patterns, APIs, distributed systems, cloud infrastructure and modern application architectures

AI-native engineering transformation

Introduce and embed AI-native software engineering practices within delivery teams

Apply agentic AI tooling to development, legacy system understanding, test automation and engineering workflows

Use and evaluate context engineering, harness engineering, reverse engineering and autonomous engineering agents

Experiment with emerging AI development tools and judge what actually works on enterprise problems

Identify barriers to AI adoption and build practical ways to overcome them

Technical leadership & coaching

Act as a hands-on mentor, working directly alongside developers to demonstrate better engineering approaches

Lead architecture discussions, solution reviews and knowledge-sharing sessions

Influence engineering standards and technical decisions without relying on formal line-management authority

Help teams become more independent, confident and technically mature

Product & stakeholder collaboration

Partner with product leaders, engineering managers, architects and business stakeholders

Explain complex technical options so the business can make informed decisions

Build credibility with both engineering practitioners and technology leadership

What you bring

A strong track record in modern software engineering and delivery of complex systems

Practical solution architecture capability - you can explain major architectural decisions and trade-offs in detail

Current hands-on credibility through delivery, prototyping, experimentation or substantive technical work

Real, applied experience with AI-assisted and agentic software development - with evidence of how it improved workflows, quality or outcomes

A product engineering mindset: you connect architecture decisions to customer journeys, business processes and outcomes

Demonstrable ability to coach, mentor and upskill other engineers

Strong communication and a collaborative, curious, low-ego working style

Formal people-management experience is not required. The client cares about evidence of ability and impact more than years of experience or titles.

Nice to have

Insurance technology experience (commercial, claims, life, policy administration or high-net-worth) - an advantage, not a requirement

Banking, payments, capital markets or other regulated financial-services engineering

Large-scale enterprise modernisation, legacy transformation or complex systems integration

AI-enabled testing, codebase analysis or developer productivity tooling

What success looks like

You build technical credibility quickly within your assigned teams

You introduce AI-native approaches with clear, measurable value to delivery

Teams get stronger rather than depending on you

At Principal level, you take meaningful accountability for the technical direction of a significant domain

Scale: enterprise systems and complex products with global reach

Complexity: hard modernisation, integration and architecture problems

Impact: visible influence over substantial domains, not a narrow slice of a giant tech org

Stability: an established, financially strong employer

Purpose: make AI-native engineering a real enterprise operating model, not a pilot

Logistics

Location: Jersey City, NJ or Philadelphia, PA

Work mode: Hybrid - approximately 3 days per week in the office

Level: Staff Engineer or Principal Engineer

Interview process: typically 3-5 stages, including a live, case-based solution architecture discussion. No on-the-spot coding test.