Senior Java Developer - AI/NLP Solutions

State Street; Województwo małopolskie; On-site; PLN 164,000 - 200,000; Full time

Benefits offered by this job

Permanent contract from day one

Birthday Day Off and milestone days

Gold Medical Package

Private pension plan

Training and development programs

Job summary

State Street, through its Charles River Development (CRD) division, seeks a Senior Java Developer to design, develop, and maintain scalable enterprise applications in an agile team. You will blend strong Java backend skills with practical ML/NLP and LLM knowledge to build AI-enabled, secure solutions.

You will collaborate with product managers, architects, and engineers to translate business needs into robust technical designs, while advancing architectural decisions around AI integration and

Qualifications

• At least five years of experience across the full software development lifecycle for enterprise Java applications.
• Strong knowledge of core Java, Spring Boot, REST APIs, microservices, relational databases, and Kafka.
• Good understanding of ML/NLP fundamentals, including classification, model evaluation, tokenization, embeddings, semantic similarity, and information extraction.

Responsibilities

• Analyze, design, develop, test, and maintain complex enterprise software using Java and related technologies.
• Design scalable backend services and contribute to evolution of core application frameworks.
• Integrate ML models, LLMs, and AI services into enterprise applications.
• Collaborate with Product Managers, Business Analysts, architects, and engineers to translate requirements into technical solutions.
• Mentor junior engineers and contribute to engineering practices.

Skills

Java

Spring Boot

REST APIs

Microservices

Kafka

ML fundamentals

NLP fundamentals

LLM

Transformer fundamentals

Problem solving

Education

B.S. or M.S. in Computer Science or related field

Tools

Kubernetes

Azure

Python

Job description

Who We Are

Charles River Development (CRD) is the FinTech division of State Street. Together with State Street’s Middle and Back Office services, Charles River’s cloud-based Front Office technology forms the foundation of the State Street Alpha Platform, the first front-to-back solution in the industry.

Who We Are

Charles River Development (CRD) is the FinTech division of State Street. Together with State Street’s Middle and Back Office services, Charles River’s cloud-based Front Office technology forms the foundation of the State Street Alpha Platform, the first front-to-back solution in the industry.

Our vision is to be the world’s leading investment platform, shaping the future of the industry and driving new levels of technology-led innovation, resiliency, efficiency, and growth for investors and the people they serve.

The CRD Engineering organization is transforming the platform by moving from monolithic software toward modern cloud-based technologies, including Microsoft Azure, Kafka, and Snowflake. We continue to expand the use of artificial intelligence, machine learning, and natural language processing across our engineering solutions.

As a digital innovation leader, we invest into our solutions, processes, systems, and talent.

Summary

As a Senior Java Developer, you will design, develop, and maintain scalable enterprise applications within an agile engineering team. You will combine strong Java and backend engineering skills with a practical understanding of machine learning, natural language processing, and Large Language Models to help build reliable, secure, and maintainable AI-enabled solutions.

Responsibilities

• Analyze, design, develop, test, and maintain complex enterprise software using Java and related technologies.
• Design scalable backend services and contribute to the evolution of core application frameworks.
• Integrate machine learning models, Large Language Models, and AI services into enterprise applications.
• Collaborate with Product Managers, Business Analysts, architects, and engineers to translate business requirements into sustainable technical solutions.
• Contribute to architectural decisions related to AI integration, data flows, validation, security, observability, and operational support.
• Apply engineering best practices to AI-enabled functionality, including automated testing, output validation, performance monitoring, auditability, and human oversight.
• Provide informed technical guidance during design discussions and code reviews.
• Troubleshoot complex technical issues in mission-critical client environments.
• Mentor junior engineers and contribute to the continuous improvement of engineering practices.

Qualifications

Recommended Education

• B.S. or M.S. degree in Computer Science, Software Engineering, Artificial Intelligence, Machine Learning, Data Science, or another relevant technical field.

What We Are Looking For

• At least five years of experience across the full software development lifecycle for enterprise Java applications.
• Strong knowledge of core Java, Spring Boot, REST APIs, microservices, relational databases, and distributed systems using technologies such as Kafka.
• Good understanding of machine learning and NLP fundamentals, including classification, model evaluation, tokenization, embeddings, semantic similarity, and information extraction.
• Good understanding of LLM and Transformer fundamentals, including prompting, context handling, structured outputs, retrieval-augmented generation, model limitations, and integration of AI capabilities into backend applications.
• Strong problem-solving and communication skills, with the ability to collaborate effectively across technical and business teams.

Nice to Have

• Experience with Kubernetes and cloud platforms such as Microsoft Azure.
• Familiarity with vector search, embeddings, retrieval-augmented generation, and document-processing solutions.
• Familiarity with Python, ML or NLP libraries, and model deployment or monitoring practices.
• Understanding of responsible AI, data privacy, explainability, and human-in-the-loop workflows.
• Experience developing software in regulated or data-sensitive environments.

Minimum Salary

zł182 004 Annual

The minimum salary quoted above applies to the role in the primary location specified. If the candidate ultimately works outside of this primary location, the applicable minimum salary may differ.

Salary will be determined based on factors such as the position, type of work performed, individual skills, job description, working hours, diligence, initiative, self-management, length of employment, availability, and the quantity and quality of work delivered, as well as other objective and non-discriminatory criteria relevant to State Street employees.

In addition to salary, employees are eligible to be considered for discretionary annual performance-based awards.

We Offer

• Permanent contract from day one
• Additional holidays (Birthday Day Off, 3rd and 5th year anniversary Day Off)
• Gold Medical Package for employees and their families (partner and children)
• Premium life insurance package and private pension plan
• Wide range of soft skills training, technical workshops, language classes and development programs
• Opportunities to volunteer your time to company-driven initiatives, employee networks or organizations of your choice
• Variety of well-being programs
• Additional benefits available depending on the seniority of the role

About State Street

Across the globe, institutional investors rely on us to help them manage risk, respond to challenges, and drive performance and profitability. We keep our clients at the heart of everything we do, and smart, engaged employees are essential to our continued success.

We are committed to fostering an environment where every employee feels valued and empowered to reach their full potential. As an essential partner in our shared success, you’ll benefit from inclusive development opportunities, flexible work-life support, paid volunteer days, and vibrant employee networks that keep you connected to what matters most. Join us in shaping the future.

As an Equal Opportunity Employer, we consider all qualified applicants for all positions without regard to race, creed, color, religion, national origin, ancestry, ethnicity, age, disability, genetic information, sex, sexual orientation, gender identity or expression, citizenship, marital status, domestic partnership or civil union status, familial status, military and veteran status, and other characteristics protected by applicable law.

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Job ID: R-793601