Java Full Stack Developer

Title: Full Stack Developer

Boston, MA (Locals Only) or Philadelphia, PA, not open to relocation

Client : Investment Banking

*2 openings

Location: Onsite 3 days/week in Boston, MA (50 Post Office Square) PREFERRED or Philadelphia, PA (1 Logan Square)

Duration: 1 year contract

Start: ASAP

Interview Process: 3 rounds video/onsite

Client Note: prior Investment Banking experience preferred. 

We are looking for an experienced Java Developer to join our Ai Lab team, with a strong focus on AI driven and data enabled solutions. This role is ideal for a senior engineer who wants to remain hands on while also having a real influence on technical direction, quality, and team growth.

As a Senior Java Developer, you will play a key role in building and evolving applications, contributing to architectural decisions, and supporting less experienced engineers through mentoring and technical guidance. You will work closely with cross functional teams, including Product Owners, Data Scientists, and Business Stakeholders, to ensure solutions deliver real business value.

Key Responsibilities

Design, develop, and maintain high quality Java based applications in a complex, distributed environment.

Proficiency in modern front-end frameworks (React, Angular) and back-end technologies (Python, Java/Spring Boot, Node.js) to build scalable, end-to-end applications.

Contribute to AI enabled and data driven solutions, working closely with data and product teams.

Take ownership of features from requirements analysis through implementation, deployment, and production support.

Participate in technical design and architecture discussions, influencing solutions and best practices.

Perform code reviews and promote clean code, scalability, and maintainability.

Act as a technical mentor for less experienced developers, sharing knowledge and setting development standards.

Support application evolution by driving feature enhancements and technical improvements.

Work with CI/CD pipelines and deployment processes to ensure reliable delivery.

Troubleshoot, debug, and resolve complex issues in existing applications.

Collaborate effectively in Agile, distributed teams (Scrum / Kanban).

Familiarity with Retrieval-Augmented Generation patterns, embedding models, vector databases, and semantic search techniques to ground AI outputs in enterprise content.

Experience working with large language models and exposure to agentic AI frameworks (e.g., LangChain, LangGraph, CrewAI) for building multi-step, tool-augmented workflows and autonomous AI agents

Communicate clearly with stakeholders, helping translate technical topics into understandable outcomes and impacts.

Technical Scope

•             Core Java development

•             Spring ecosystem: Spring MVC, Spring Data, Spring Security

•             Web applications using Angular, TypeScript, RxJS, HTML, CSS

•             SQL and NoSQL databases, with a strong focus on data modeling and performance

•             Messaging queues and asynchronous processing

•             Cloud development on OpenShift

•             CI/CD pipelines and deployment automation

•             Unix/Linux environments

•             Agentic Frameworks (langchain, Langgraph, etc)

Required Experience

•             5+ years of hands on Java development experience

•             Strong experience with Spring and enterprise grade backend systems

•             Solid understanding of design patterns and scalable architecture principles                                                                                                                         

•             Experience with SQL and NoSQL databases and optimization techniques

•             Experience with messaging systems

•             Hands on experience with Azure cloud services

•             Experience working in Agile environments

•             Strong problem solving skills and ability to proactively identify risks

•             High attention to code quality, reliability, and accuracy

•             Leadership & Soft Skills

•             Natural leadership mindset with the ability to mentor and support other developers

•             Very good command of English (spoken and written)

•             Strong communication skills and ability to collaborate with Product, Project Management, and senior stakeholders

•             Analytical thinking and structured problem solving approach

•             Ability to prioritize tasks and manage delivery effectively

•             Team oriented attitude with a sense of ownership and accountability