Senior Java Developer - High-Scale Apps (Hybrid)

United States Digital Space LLC; United States; Hybrid; USD 85,000 - 142,000; Full time

Benefits offered by this job

Hybrid work model

Global systems exposure

Learning and development

High performance culture

Competitive compensation

Work-life balance

Job summary

United States Digital Space LLC is seeking a Senior Java Developer to join our Applications Development team. You will design, build, and own high-performance Java applications that underpin critical financial services at global scale, taking full ownership in a fast-moving, technically demanding environment.

Responsibilities include designing efficient Java code for high-volume workloads, architecting RESTful services with Spring, translating complex requirements into technical specifications,

Qualifications

• 5 or more years of professional Java development experience, with substantial exposure to cloud-based environments and distributed systems.
• Expert-level command of Java, RESTful API design, and cloud engineering principles, with hands-on experience building production-grade services using Spring and Spring Boot.
• Solid database experience spanning relational systems such as Oracle and SQL, as well as NoSQL technologies including MongoDB.
• Practical experience with cloud-native platforms including OpenShift and Kubernetes, and messaging technologies such as MQ and Kafka.
• Deep commitment to clean code principles, design patterns, and test-driven development practices that produce maintainable, production-ready software.
• Fluency in Agile methodologies and the full software development lifecycle, with hands-on experience building and maintaining CI/CD pipelines using DevOps tooling.
• Demonstrated ability to lead technical delivery autonomously, manage competing priorities, and perform effectively under pressure in a fast-paced environment.

Responsibilities

• Design and develop efficient, reusable, and reliable Java code for high-volume, low-latency applications, setting the benchmark for engineering quality across the team.
• Architect RESTful APIs and scalable backend services using Spring and Spring Boot, ensuring optimal performance, responsiveness, and maintainability from day one.
• Translate complex business and user requirements into detailed technical specifications, low-level design documents, and solution architecture artefacts.
• Identify, evaluate, and champion the adoption of emerging technologies and frameworks that meaningfully enhance the application stack.
• Build and maintain comprehensive testing automation — covering unit, integration, and performance tests — to uphold code quality and production reliability.
• Lead peer code reviews, providing precise and constructive feedback that raises engineering standards across the team.
• Take full accountability for production systems, including rapid diagnosis and resolution of critical issues to minimise customer and business impact.
• Partner with business analysts, project managers, and senior engineers across functions to deliver high-quality software, while establishing and maintaining clear standards for technical documentation.

Skills

Java

RESTful APIs

Spring & Spring Boot

Cloud engineering

OpenShift & Kubernetes

MQ & Kafka

CI/CD / DevOps

Agile methodologies

Distributed systems

Tools

MQ

Kafka

Job description

United States Digital Space LLC is seeking a Senior Java Developer to join our Applications Development team. You will design, build, and own high-performance Java applications that underpin critical financial services at global scale, taking full ownership in a fast-moving, technically demanding environment.

Responsibilities include designing efficient Java code for high-volume workloads, architecting RESTful services with Spring, translating complex requirements into technical specifications,