Senior Java Developer

mks2technologies; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

mks2technologies in the United States is seeking a Senior Software Architect/Engineering Lead to modernize legacy Java applications into scalable microservices. You will stay hands-on while driving design, implementation, and operations across API development, data-layer separation, cloud deployment, and live-system support during migration.

The role requires strong expertise in Java, Spring Boot, Hibernate, REST APIs, relational databases, and containerized deployments with Docker, Kubernetes,

Qualifications

• 8+ years leading technical teams building modern Java services with hands-on development.
• Experience decomposing complex legacy systems into smaller services.
• Strong knowledge of Java, Spring Boot, Hibernate, and REST API development.
• Experience with relational databases such as PostgreSQL or MySQL and with API design and maintenance.
• Experience with Docker, Kubernetes, and Helm; familiarity with Git, OAuth, and secure application practices.
• Eligibility for Public Trust clearance.

Responsibilities

• Plan and carry out gradual migration from monolithic applications to independent Java microservices while protecting live service continuity.
• Lead API design and implementation, including REST or GraphQL specifications, endpoints, and data models.
• Move shared database responsibilities into service‑specific data layers while preserving data integrity.
• Find and address system and data bottlenecks; tune queries, indexing, connections, migrations, and caching.
• Deploy and operate services on Kubernetes in AWS, managing manifests, Helm charts, scaling, rollouts, and resource settings.
• Write production code, integrate APIs with other systems, apply security controls, monitor service health, and participate in on‑call support.

Skills

Java

Spring Boot

Hibernate

REST API development

API design

Public Trust eligibility

Tools

Docker

Kubernetes

Helm

Git

OAuth

Security practices

Job description

Role overview

Lead the modernization of legacy software into scalable Java services while remaining hands‑on in design, implementation, and operations. The work includes API development, data‑layer separation, cloud deployment, performance tuning, and support for live systems during migration.

Responsibilities

• Plan and carry out gradual migration from monolithic applications to independent Java microservices while protecting live service continuity.
• Lead API design and implementation, including REST or GraphQL specifications, endpoints, and data models.
• Move shared database responsibilities into service‑specific data layers while preserving data integrity.
• Find and address system and data bottlenecks; tune queries, indexing, connections, migrations, and caching.
• Deploy and operate services on Kubernetes in AWS, managing manifests, Helm charts, scaling, rollouts, and resource settings.
• Write production code, integrate APIs with other systems, apply security controls, monitor service health, and participate in on‑call support.

Requirements

• At least 8 years leading technical teams building modern Java services, with continued hands‑on development.
• Demonstrated experience decomposing complex legacy systems into smaller services.
• Strong knowledge of Java, Spring Boot, Hibernate, and REST API development.
• Experience with relational databases such as PostgreSQL or MySQL and with API design and maintenance.
• Experience with Docker, Kubernetes, and Helm; familiarity with Git, OAuth, and secure application practices.
• Eligibility for Public Trust clearance.

Nice to have

• Experience migrating Ruby applications to Java.