About the Role
We're seeking a Senior Java Developer with 5+ years' experience to build high-performing, scalable enterprise portal backends, APIs, and modern React frontends. You'll develop modular services, cloud-native integrations, and headless APIs for robust, production-ready portal applications.
Key Responsibilities
- Develop modular Java backend services (OSGi modules, Service Builder equivalents) and RESTful/GraphQL headless APIs for enterprise portals.
- Build responsive React frontends with client extensions consuming portal APIs and state management (Redux/Zustand).
- Design and optimize Postgres/MySQL databases with advanced entity-service mappings and SQL performance tuning.
- Implement event-driven integrations using message brokers (RabbitMQ, Kafka, Azure Service Bus) for cross-module communication.
- Deploy containerized portal applications with Docker/Kubernetes on Azure, ensuring high availability.
- Optimize performance with distributed caching (Redis, Hazelcast), low-latency APIs, and frontend bundle optimization.
- Collaborate across full SDLC: API contracts, modular development, frontend integration, deployment, and monitoring.
- Implement full-stack observability with Prometheus, Grafana, Datadog across backend services and frontend.
- Implement DevSecOps with automated security scanning, CI/CD pipelines for modular deployments.
Must-Have Skills
- Backend/Portal: Java 17+, Spring Boot, enterprise portal frameworks (OSGi modules, Service Builder, modular service layers); REST/GraphQL headless APIs.
- Frontend: React 18+, TypeScript, hooks, component libraries (Material-UI), portal client extensions/API integration.
- Architecture: Microservices/modular monoliths, design patterns (CQRS, Event Sourcing, repository patterns).
- Agentic Coding: Proficiency with agentic AI coding assistants for rapid prototyping, refactoring complex OSGi modules, and generating tests across full-stack components.
- DevOps/CI-CD: Docker, Kubernetes (Helm charts), Jenkins/GitHub Actions, multi-module pipelines.
- Cloud: Azure (2+ years hands-on).
- Databases: Postgres/MySQL, JPA/Hibernate, advanced SQL, entity-service mappings.
- Testing: JUnit/Mockito (backend), Jest/React Testing Library (frontend), integration testing.
- Tools: Git, Gradle/Maven (multi-module), npm/yarn.
- Full SDLC experience; OWASP security for enterprise applications.
Nice-to-Have Skills
- Kafka streaming, Next.js for portal frontends.
- Infrastructure as Code (Terraform for portal deployments).
- Advanced monitoring: Datadog, Splunk.
- Domain-Driven Design, legacy system integration (.NET/mainframes).
- Portal-specific patterns: content management, user personalization, workflow engines.
Preferred Qualifications
- Bachelor's/Master’s in computer science.
- Cloud/Java certifications.
Skills Required
- Java 17+
- Spring Boot
- Enterprise portal frameworks (OSGi modules, Service Builder, modular service layers)
- RESTful and GraphQL APIs
- React 18+ with TypeScript and hooks
- Client state management (Redux or Zustand)
- Design and optimize Postgres/MySQL databases; JPA/Hibernate
- Event-driven integrations with RabbitMQ, Kafka, or Azure Service Bus
- Docker and Kubernetes (Helm charts)
- Azure cloud experience (2+ years hands-on)
- Distributed caching (Redis, Hazelcast) and API performance tuning
- Full SDLC experience and OWASP security practices for enterprise apps
- CI/CD tooling: Jenkins or GitHub Actions and multi-module pipelines
- Testing: JUnit/Mockito (backend); Jest/React Testing Library (frontend)
- Build tools: Gradle or Maven (multi-module); npm or yarn
- Experience with observability tools: Prometheus, Grafana, Datadog
- Familiarity using agentic AI coding assistants for prototyping and test generation
- Architectural patterns: Microservices/modular monoliths, CQRS, Event Sourcing
- Frontend component libraries (Material-UI) and portal client extension integration
- Bachelor's/Master's in Computer Science or equivalent (preferred)
- Cloud/Java certifications (preferred)
- Kafka streaming and Next.js for portal frontends (nice-to-have)
- Infrastructure as Code (Terraform) for portal deployments (nice-to-have)
- Advanced monitoring: Datadog, Splunk (nice-to-have)
- Domain-Driven Design and legacy system integration (.NET/mainframes) (nice-to-have)
Toppan Merrill Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Toppan Merrill and has not been reviewed or approved by Toppan Merrill.
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Healthcare Strength — Offerings include full medical, dental, and vision coverage for employees and families, plus mental-health support and wellness programs. Access to HSAs/FSAs and an EAP further strengthens the health suite.
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Leave & Time Off Breadth — Program details highlight flexible PTO, paid holidays, wellness days, floating holidays, and paid parental leave. Additional time-off types such as bereavement, jury duty, and community/volunteer days are cited in postings.
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Retirement Support — A 401(k) plan with company match is frequently cited, with some postings noting immediate vesting from date of hire. This sits alongside other financial protections such as employer-paid life and disability coverage.
Toppan Merrill Insights
What We Do
Toppan Merrill is a global leader committed to simplifying the complexity of regulatory disclosure and regulated communications. We are an innovative and trusted partner for the corporate, legal, financial and health plan markets. Through consultative technology, expert knowledge and service excellence, Toppan Merrill is continuously improving the process of creating compliant communications for capital markets transactions, regulatory disclosure filings, shareholder and member communications and sustainability reporting. Toppan Merrill is part of Toppan Holdings a leading and diversified provider of sustainable, integrated solutions. Learn more at toppanmerrill.com
