Principle Java Full Stack Engineer (Lead)

About the role

We are hiring a Principal Full-Stack Engineer to design, build, and operate scalable enterprise applications on a modern Java, Python, and ReactJS stack. This is a senior individual-contributor role with technical leadership scope: you will own architecture decisions, drive engineering excellence, integrate AI capabilities into production systems, and mentor mid- and junior-level engineers.

Responsibilities

• Own architecture decisions and drive engineering excellence on a modern Java, Python, and ReactJS stack.
• Integrate AI capabilities into production systems, including LLMs, embeddings, RAG pipelines, and agentic workflows.
• Drive architectural decisions and set technical direction across cross-functional teams.
• Lead end-to-end delivery of complex projects, from design through deployment.
• Mentor mid- and junior-level engineers through complex tickets, debugging, root-cause analysis, and production incident response.
• Coach engineers on writing effective unit and integration tests and navigating CI/CD pipelines with confidence.
• Guide engineers into adjacent areas such as cloud computing, AI/ML, and DevOps to expand their scope and impact.
• Collaborate with data science and ML teams to operationalize models, build evaluation pipelines, and deploy production-ready AI services.

Requirements

• 10+ years of hands-on software development experience, with deep expertise in modern Java full-stack development.
• Strong command of Java frameworks and libraries, including Spring, Spring Boot, and Hibernate.
• Prompted experience building single-page web applications using ReactJS, Bootstrap, and Node.js.
• Strong hands-on proficiency with Python for scripting, automation, data processing, and backend services.
• Demonstrated experience architecting and implementing microservices and event-driven systems using messaging platforms such as Kafka or RabbitMQ.
• Expertise developing and maintaining RESTful APIs, backend services, and database schemas across relational (SQL Server, PostgreSQL) and NoSQL (MongoDB, Elasticsearch) platforms.
• Strong SQL development skills, including query optimization and performance tuning.
• Hands-on experience deploying and operating containerized microservices on AWS and/or Azure, applying cloud-native patterns and infrastructure-as-code.
• Working knowledge of modern security frameworks and standards such as OAuth 2.0, OpenID Connect, and JWT.
• Proven ability to proactively detect and remediate security vulnerabilities across application code and infrastructure, ensuring compliance within established SLAs.
• Experience with modern testing frameworks (Jest, Mocha, Chai) and a commitment to test-driven development, including unit and integration testing.
• Ability to enforce engineering best practices through peer code reviews, architectural standards, and raising the bar on code quality.
• Proven ability to troubleshoot complex, cross-stack production issues and drive root-cause analysis to resolution.
• Experience participating in Agile ceremonies and managing work and releases through Jira and Azure DevOps.
• Hands-on experience with Agile methodologies and DevOps culture across the software delivery lifecycle.
• AI & Generative AI Practical experience integrating Large Language Models into applications via APIs (e.g., OpenAI, Anthropic Claude, Azure OpenAI, AWS Bedrock).
• Familiarity with prompt engineering, Retrieval-Augmented Generation (RAG), embeddings, and vector databases.
• Experience integrating AI capabilities LLMs, embeddings, RAG pipelines, agentic workflows into existing applications and new product features.
• Experience collaborating with data science and ML teams to operationalize models, build evaluation pipelines, and deploy production-ready AI services.
• Understanding of responsible AI practices, including data privacy, hallucination mitigation, evaluation, and guardrails.

Qualifications

• Proven ability to lead, mentor, and grow engineering teams, fostering technical excellence and continuous learning.
• Experience driving architectural decisions and setting technical direction across cross-functional teams.
• Strong stakeholder management translates business requirements into scalable technical solutions and explains trade-offs to product, design, and executive stakeholders.
• Track record of leading end-to-end delivery of complex projects, from design through deployment.
• Excellent written and verbal communication articulates complex technical concepts clearly to technical and non-technical audiences.
• Active listener who engages effectively with designers, architects, product managers, and end users to understand needs and drive alignment.
• Strategic thinker who balances short-term delivery pressure with long-term technical investment and debt management.
• Ownership mindset accountable for outcomes, proactive in driving initiatives forward.
• Conflict-resolution and negotiation skills to align diverse perspectives and drive consensus on technical direction.
• Adaptability and resilience in fast-paced environments with shifting priorities.

Skills

• ReactJS
• Python
• Java 17+
• Microservices
• AWS/Azure
• RDBMS
• NoSQL
• LLM
• Oauth

Benefits

Flight ticket reimbursement will be provided for candidates attending the client face-to-face interview.

Pay

Details on pay will be provided during the interview process.

Schedule

The role is a contract position with a hybrid on-site schedule available.