Principal Java Technical Architect

Who We Are

Lennox (NYSE: LII) Driven by 130 years of legacy, HVAC and refrigeration success, Lennox provides our residential and commercial customers with industry-leading climate-control solutions. At Lennox, we win as a team, aiming for excellence and delivering innovative, sustainable products and services. Our culture guides us and creates a workplace where all employees feel heard and welcomed. Lennox is a global community that values each team member’s contributions and offers a supportive environment for career development. Come, stay, and grow with us.

What Drives Success

Location: Stone Mountain, GA (This position is 100% onsite in Stone Mountain, GA requiring attendance in-office 5 days a week, Monday-Friday)

We are seeking a highly technical, hands-on Technical Architect to lead the design and delivery of highly reliable, fault tolerantenterpriseplatforms built with an AI-first engineering mindset. In this role, you will architect scalable, secure, resilient, and cloud-native solutions while remaining actively involved in software design, development, and technical problem-solving

Success in this role requires deep Java engineering expertise, strong architectural vision, and the ability to lead through influence. You'll write production-quality code, drive key technical decisions, mentor engineers, remove complex delivery obstacles, and continuously elevate engineering standards across the organization.

If you thrive at the intersection of architecture, innovation, and hands-on development, this is an opportunity to shape the future of intelligent connected systems.

DUTIES INCLUDE BUT ARE NOT LIMITED TO:

Architecture & System Design:

• Design scalable, reliable, secure, and fault-tolerant enterprise systems across distributed applications, integration, data, and cloud-native layers.
• Define architecture patterns for AI-native capabilities, APIs, event-driven services, observability, resiliency, and performance at enterprise scale.
• Evaluate technology options and define pragmatic technical direction across cloud, APIs, event-driven services, integrations, observability, and automation.

Technical Leadership & Delivery:

• Spend 50%+ of time on hands-on technical work including coding, design reviews, debugging, performance tuning, AI-assisted development, and complex issue resolution.
• Translate business and product needs into practical architecture decisions, technical roadmaps, and delivery-ready engineering plans.
• Write production-quality code daily in Java and/or Python, while also guiding implementation across APIs, and distributed platform services.
• Guide engineers through complex design and implementation trade-offs while ensuring solutions remain practical, supportable, and delivery ready.
• Lead technical staff through architecture execution, sprint delivery, code reviews, quality gates, and production readiness activities.
• Partner with product owners, business stakeholders, architects, QA, DevOps, and infrastructure teams to ensure technical delivery aligns with business outcomes.
• Own technical delivery risks, remove engineering blockers, and ensure designs are implemented with measurable quality, reliability, and performance outcomes.

Enterprise Platform & Integration Expertise:

• Design enterprise-grade integration patterns across internal systems, external platforms, APIs, data pipelines, and real-time/event-driven architectures.
• Understand infrastructure layers from Kubernetes and cloud-native runtime operations to GPU inference stacks, model-serving patterns, and scalable workload deployment.
• Ensure solutions are observable, secure, resilient, cost-aware, and supportable in production environments.
• Establish strong practices across automated testing, CI/CD, observability, rollout safety, incident response, production support, and operational excellence.
• Create reusable technical patterns, reference architectures, documentation, and engineering playbooks to standardize delivery across teams.

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What We Are Looking For

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related technical discipline. Master's degree preferred.
• 10+ years of experience building and operating enterprise software, including:
  • 8+ years of hands-on Java engineering experience with deep expertise in JVM internals, compiler behavior, concurrency, memory management, and performance optimization.
  • 5+ years leading enterprise architecture across applications, cloud-native platforms, APIs, integrations, data, and highly available production systems.
• Proven experience designing scalable, reliable, secure, fault-tolerant, and production-ready enterprise platforms, including any one of the following distributed systems, IoT platforms, Building Management Systems (BMS), connected devices, and telemetry environments.
• Strong architecture experience with microservices, APIs, event-driven architecture, integration patterns, DevSecOps, observability, and cloud-native engineering.
• Hands-on experience developing modern full-stack and platform solutions using technologies such as Java, Python, APIs, and distributed infrastructure.
• Experience applying AI-native development practices, AI/ML or GenAI services, automation frameworks, intelligent system design patterns, and AI-assisted engineering tools such as Claude Code, GitHub Copilot, or similar platforms to accelerate software delivery.
• Familiarity with multi-agent AI systems, Model Context Protocol (MCP) integrations, agent-to-agent communication, and emerging AI orchestration frameworks.
• Proven ability to lead highly technical engineering teams while remaining hands-on with architecture, software design, coding, code reviews, troubleshooting, mentoring, and delivery execution.
• Demonstrated ability to establish technical direction, drive architecture quality, ensure production readiness, and lead engineering execution across cross-functional teams.
• Strong communication, collaboration, and decision-making skills with the ability to navigate ambiguity, evaluate technical tradeoffs, and deliver high-impact solutions.

What We Offer

Compensation: This is a salaried exempt role. The starting salary range for this role and market is between $134,000 - $176,400 annually.This position is also eligible for the Short Term Incentive (STI) bonus program with a target payout of 10%. Factors that may affect starting salary include geography/market and the skills, education, experience, and other qualifications of the successful candidate. Employees in this role are also eligible for an annual bonus in accordance with the terms of the Company’s applicable plan. Employees in this role are not eligible for overtime.

Benefits: Subject to applicable eligibility requirements, the following benefits are offered for this role: tuition reimbursement; medical, dental, and vision insurance; prescription drug coverage; 401(k) retirement plan; short-term disability insurance; 8 weeks paid birthing leave; 2 weeks paid bonding leave; life and long-term disability insurance.

Depending on date of hire, and subject to applicable eligibility requirements, new employees in this role also receive up to: 12 days paid time off, 2 paid well-being days, 1 paid volunteer day, 12 paid holidays, and 3 floating holidays per year.

Our Culture: At Lennox, our Core Values of Integrity, Respect & Excellence are ingrained in the fabric of the organization. They define our culture - which is about how we do business and how we treat others. Lennox is not just a workplace; we are a global community that values each team member’s contributions. As an equal opportunity employer, we are committed to recruit, develop, and retain talented individuals from a wide range of backgrounds, ensuring that everyone has the opportunity to succeed and contribute to our continued growth and success. At Lennox, you’ll take pride in our brands, knowing you are part of something special. Come, stay, and grow with us!

Disclaimers: The compensation and benefits information is accurate as of the date of this posting. Lennox reserves the right to modify this information at any time, with or without notice, subject to applicable law.

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We may use automated tools, including artificial intelligence, to support parts of our hiring process, such as application review and interview scheduling. These tools assist our teams but do not replace human decision-making. If you need an accommodation or have questions, please contact [email protected].