Senior Java Developer – Application Modernization

Modernize business-critical Java platforms and help shape the next generation of financial markets technology.

The Role

Capco is looking for a Senior Java Developer to join a major technology modernization initiative focused on upgrading business-critical legacy applications and their supporting technology.

This is a hands-on back-end engineering role for someone with deep Java experience who enjoys solving the challenges that come with modernizing established platforms. You’ll help refactor and migrate legacy Java 6/8, JBoss and Struts applications towards modern Java frameworks and deployment environments, including JDK 17, Spring Boot, OpenShift, Kubernetes and AWS.

You’ll work across the full development lifecycle, helping ensure applications remain secure, reliable and fully functional throughout the modernization journey.

What You’ll Do

• Modernize and refactor legacy Java 6/8, JBoss and Struts applications, supporting migration to JDK 17, Spring Boot and newer JBoss EAP environments.
• Design, develop and enhance Java back-end services while contributing to TypeScript components and modern microservices-based architectures.
• Containerize and deploy applications using Docker, OpenShift and Kubernetes, with deployment into AWS environments including ECS/EKS.
• Integrate applications with enterprise authentication and SSO solutions such as Okta, including implementations using Spring SAML.
• Deliver across the Agile software development lifecycle, from technical design and development through testing, CI/CD, deployment and production release.

What We’re Looking For

• 8+ years of Java development experience with extensive back-end expertise across Java/J2EE, including Core Java, multi-threading, Collections, JDBC, Maven and Ant.
• Demonstrated experience upgrading and refactoring legacy Java applications, particularly Java 6/8, JBoss and Struts environments, with experience of Spring Boot and modern Java/JDK versions.
• Hands-on experience with TypeScript and containerized application environments using Docker, OpenShift and Kubernetes, alongside AWS and DevOps practices.
• Experience with relational databases including Oracle, MS SQL Server and DB2, including T-SQL, stored procedures and jobs, plus experience across Linux, Unix and Windows environments.
• Experience delivering software using Agile practices and modern CI/CD tooling, including Git, Bitbucket, Jenkins and JIRA.

Bonus Points For

• Experience with J2EE technologies including EJBs (Session, Entity and Message Driven Beans), JTA, Filters and Servlets.
• Experience with PostgreSQL.
• Experience modernizing Unix scripts and associated application dependencies as part of wider platform modernization.
• Experience developing software for financial services, financial markets or accounting platforms.
• Experience delivering complex application migrations while maintaining application stability and continuity.

Why Join Capco

• Deliver high-impact technology solutions for Tier 1 financial institutions.
• Work in a collaborative, flat, and entrepreneurial consulting culture.
• Access continuous learning, training, and industry certifications.
• Be part of a team shaping the future of digital financial services.
• Help shape the future of digital transformation across FS & Energy.

Benefits

We offer a competitive, people-first benefits package designed to support every aspect of your life:

• Comprehensive Benefits Coverage – 100% company-paid health, life, and disability insurance effective from Day 1 of employment.
• Retirement Savings Program – Registered Retirement Savings Plan (RRSP) with the option of receiving a matching employer contribution.
• Virtual Health Care & Support – Company-paid virtual health care and Employee & Family Assistance Program (EFAP) available to employees and their dependents/partners.
• Family & Wellness Support – Parental Leave Top-Up, a New Parent Gift and fitness reimbursement to support health and well-being.
• Career Development – A Business Coach from Day 1, providing personalized one-on-one coaching to support career growth, accelerate development and help you achieve your professional goals at Capco.

Inclusion at Capco

We’re committed to making our recruitment process accessible and straightforward for everyone. If you need any adjustments at any stage, just let us know – we’ll be happy to help. We value each person’s unique perspective and contribution. At Capco, we believe that being yourself is your greatest strength. Our #BeYourselfAtWork culture encourages individuality and collaboration – a mindset that shapes how we work with clients and each other every day.

Use of Artificial Intelligence in Talent Acquisition

At Capco, we use artificial intelligence (AI) tools to support and enhance several parts of talent acquisition. This includes using AI-enabled features within LinkedIn to help source potential candidates, speeding up routine recruitment communications such as emails and creating compelling and brand-aligned job postings that accurately reflect role requirements, and AI-scheduling applications to improve the efficiency of interview coordination.

AI is used as a support tool only. All hiring decisions are made by talent acquisition and hiring teams.

Why This Role Is Open

We are currently hiring for this role due to an existing or newly created vacancy within our organization. This position is open as part of our ongoing business needs, and we are actively reviewing applications to fill this role with a qualified candidate who can make an immediate impact.