Role Description
Who we are:
At UST, we help the world’s best organizations grow and succeed through transformation. Bringing together the right talent, tools, and ideas, we work with our client to co-create lasting change. Together, with over 30,000 employees in 30+ countries, we build for boundless impact—touching billions of lives in the process. Visit us at UST.com.
Summary
We are seeking an experienced
Senior Java Spring Boot Developer
with 8+ years of software engineering experience to design, develop, and support scalable cloud-native applications and secure APIs. The ideal candidate will have deep expertise in
Java, Spring Boot, Microservices, REST APIs, AWS Cloud, and API Security
, with a proven ability to lead technical solutions from architecture and design through deployment and production support. This role requires strong problem-solving skills, hands-on technical leadership, and experience building resilient, high-performance distributed systems in enterprise environments.
Key Responsibilities
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Design, develop, test, deploy, and maintain Java and Spring Boot applications, microservices, and secure REST APIs.
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Own technical solutions from architecture and API design through implementation, deployment, and production operation.
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Build and modernize cloud-native applications in AWS while improving scalability, resilience, maintainability, and operational readiness.
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Design and implement integrations with API gateways, identity providers, databases, internal platforms, downstream services, and external partners.
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Apply API security controls including authentication, authorization, OAuth 2.0, JWT validation, encryption, secrets handling, input validation, and protection of sensitive data.
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Design maintainable API contracts with appropriate versioning, backward compatibility, idempotency, validation, error handling, and traffic protection.
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Build fault-tolerant services using resilience patterns such as timeouts, retries with backoff, circuit breakers, bulkheads, rate limiting, graceful degradation, health checks, and failover.
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Improve software quality through automated unit, integration, component, contract, and performance testing.
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Strengthen observability using structured logging, metrics, tracing, correlation identifiers, dashboards, service-level indicators, and actionable s.
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Diagnose complex application and integration issues, lead root-cause analysis, and implement corrective actions that prevent recurring failures.
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Contribute to CI/CD automation, automated quality controls, vulnerability remediation, and production-readiness activities.
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Analyze application performance, capacity, and cloud-resource usage and implement improvements where they provide measurable value.
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Participate in technical design reviews, code reviews, requirements refinement, estimation, and solution planning.
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Identify technical debt and recommend practical improvements to architecture, security, resilience, code quality, and developer productivity.
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Create clear technical documentation covering architecture decisions, API behavior, integrations, operations, and troubleshooting
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Collaborate with engineers, architects, product owners, security teams, and platform teams while providing technical guidance to other engineers.
Required Skills
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Eight or more years of professional software engineering experience, or comparable experience demonstrating senior-level technical capability.
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Strong hands-on development experience with modern Java, preferably Java 17 or later.
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Strong experience developing production applications with Spring Boot and the broader Spring ecosystem.
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Demonstrated experience designing, building, and operating REST APIs, microservices, and distributed systems in production.
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Practical experience developing cloud-native and containerized applications in AWS.
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Strong knowledge of API security, including OAuth 2.0, JWT, authentication, authorization, encryption, secrets handling, input validation, and secure coding practices.
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Strong API design experience, including contracts, versioning, backward compatibility, idempotency, validation, error handling, and traffic protection.
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Strong knowledge of software architecture, object-oriented design, design patterns, resilience patterns, clean code, and engineering best practices.
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Experience designing fault-tolerant systems using failure isolation, recovery, concurrency, consistency, and service-dependency management practices.
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Experience applying resilience patterns such as timeouts, retries, circuit breakers, bulkheads, rate limiting, graceful degradation, health checks, and failover.
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Experience developing integrations with multiple data sources, partner systems, or third-party platforms.
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Experience with relational databases, SQL, data modeling, transactions, and database-performance considerations.
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Experience creating automated unit, integration, component, contract, and service-level tests.
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Experience using Git, Linux or Unix, build automation, CI/CD, dependency management, and debugging tools.
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Strong production troubleshooting, observability, performance analysis, scalability testing, and root-cause analysis skills.
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Ability to independently lead complex engineering work from problem definition through production delivery.
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Ability to evaluate technical trade-offs and communicate recommendations clearly to technical and non-technical stakeholders.
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Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.
Preferred Skills
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Experience with Apigee, AWS API Gateway, or another enterprise API-management platform.
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Experience deploying and operating services using AWS ECS.
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Experience with Terraform, Jenkins, or comparable infrastructure and delivery automation tools.
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Experience with Splunk, Dynatrace, Okta, or comparable observability and identity platforms.
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Experience modernizing legacy applications or designing highly available, multi-region systems.
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Experience with event-driven architectures, messaging platforms, or asynchronous processing.
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Experience with cryptography and secure payload patterns such as ECDH, ECDSA, HPKE, JWE, digital signatures, or key management.
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Experience developing software for regulated environments or systems that process sensitive consumer data.
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Experience developing AI-enabled solutions using large language models, retrieval-augmented generation, intelligent automation, or related technologies.
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Practical experience using modern coding agents or AI-assisted development tools while reviewing generated code, protecting confidential information, and validating security, correctness, and engineering quality.
Skills
Java, Spring Boot, Microservices, REST APIs, AWS Cloud, and API Security,API Security,Oauth,JWT,
