Source Job

Canada

  • Deliver full-stack development across frontend and backend systems with clean, reliable code.
  • Lead modernization of legacy Spring MVC and JSP architecture to contemporary distributed frameworks.
  • Optimize backend performance and design secure RESTful APIs for enterprise integration.

Java Spring Framework Microsoft SQL Server RESTful APIs Agile/Scrum

20 jobs similar to Java Full-Stack Developer (Independent Contractor)

Jobs ranked by similarity.

Latin America

  • Build and maintain clean, efficient, and highly scalable backend services using Java ecosystems and modern frameworks.
  • Optimize big data infrastructure, assisting in the implementation of systems that process, stream, and analyze massive datasets.
  • Own quality assurance by conducting thorough testing of software structures to guarantee high performance and system resilience.

CodeRoad provides end-to-end software development services, helping businesses scale with ideal infrastructure solutions. They operate as a nearshore technology services provider, empowering businesses to thrive in an ever-evolving digital landscape.

  • Lead the design, development, and implementation of large-scale, complex software systems using Java and modern front-end technologies.
  • Collaborate with architects, business analysts, and development teams to deliver scalable, secure, and high-performing enterprise applications.
  • Optimize application performance, database queries, and system reliability while conducting code reviews and mentoring junior developers.

US

  • Design, build, test, deploy, and support a regulated SaaS-based solution as part of an agile team.
  • Collaborate with internal and external partners to provide innovative solutions and automate processes.
  • Mentor junior engineers and ensure high-quality code and best practices in a regulated environment.

ARC-One is a company that develops regulated SaaS-based solutions, likely in the biomedical or healthcare space. The company offers a fun, collaborative environment with flexible work hours and a remote working culture.

US

  • Develop and modernize legacy codebases to Spring Boot as the subject matter expert.
  • Collaborate with an Agile team using strong communication skills to convey technical ideas.
  • Utilize AI tools pragmatically to optimize development workflows and troubleshoot issues.

We Write Code is a software development company specializing in custom software solutions. They are a small to mid-sized team focused on modernizing legacy codebases with modern frameworks like Spring Boot.

US

  • Drive system design and architecture decisions for scalability, performance, and maintainability.
  • Design and develop applications across backend (Java, Spring Boot, APIs), frontend (React/Angular), and database (PostgreSQL).
  • Conduct regular code reviews and enforce standards to ensure performance, security, and maintainability.

Mind Computing is a technology company that provides software solutions and support for government projects, including the Department of Veterans Affairs. They seek a full-time, 100% remote Senior Full Stack Java Developer to join their team in an Agile environment.

Ukraine

  • Collaborate with development team, Product Owner, and Engineering Manager on product tasks.
  • Design and implement application architecture and ensure code quality.
  • Write efficient code using Spring, microservices, and persistence frameworks.

Kyivstar.Tech is a Ukrainian hybrid IT company and a subsidiary of Kyivstar, one of Ukraine's largest telecom operators. With over 600 specialists, we drive meaningful change through innovative tech solutions in mobile, web, and high-performance systems.

UK

  • Design, develop, and optimize scalable shared backend services using Java and serverless technologies (AWS Lambda).
  • Design and implement RESTful APIs and event-driven systems, contributing to frontend components as needed.
  • Collaborate with cross-functional teams, mentor junior developers, and maintain CI/CD pipelines for high-quality software delivery.

Turnitin is a recognized innovator in global education, partnering with educators and institutions for over 25 years to develop learning integrity solutions. With over 16,000 academic institutions and team members in 35+ countries, the company fosters a remote-first culture focused on purpose, accountability, and well-being.

Portugal

  • Design, develop, and maintain scalable backend applications using modern Java (17/21) and the Spring ecosystem
  • Own software delivery from architecture and implementation through deployment, monitoring, and production support
  • Collaborate with cross-functional teams to build resilient cloud-native applications and influence technical architecture

Pragmatike is recruiting on behalf of a leading software engineering consultancy that partners with global organizations to design, build, and scale high-performance digital products. The company delivers modern cloud-native applications and distributed systems while fostering a collaborative, engineering-first culture.

Global

  • Implement software components according to design specifications and perform system integration and testing.
  • Perform unit testing, participate in estimating project efforts, and collaborate with stakeholders.
  • Support and optimize CI/CD processes and provide technical input into product roadmaps.

Miratech is a global IT services and consulting company that helps visionaries change the world by supporting digital transformation for large enterprises. The company retains nearly 1000 full-time professionals, operates in over 25 countries, and has a culture of Relentless Performance with a 99% project success rate.

US

  • Design, develop, and maintain full stack applications supporting modernization of DHS ICE systems.
  • Analyze legacy systems and workflows to identify core functionality vs. unnecessary process overhead.
  • Translate operational requirements into scalable, modern application designs.

LightFeather delivers innovative, mission-critical solutions to government clients, focusing on modernizing complex legacy systems. As a purpose-driven team, they work with some of the best minds in the industry on meaningful projects that make a real difference.

US

  • Design and implement scalable backend services and APIs for thick client desktop applications.
  • Develop and maintain data processing pipelines for structured and semi-structured data.
  • Optimize backend systems for performance, concurrency, and efficient resource utilization.

Agile Defense provides adaptive innovation to support the nation's most important missions through advanced technologies. The company values its employees as family, fostering a culture defined by the 6Hs: Happy, Helpful, Honest, Humble, Hungry, and Hustle.

Global

  • Design and develop scalable microservices and RESTful APIs using Java and Spring Boot.
  • Build backend systems supporting dynamic call routing, queue management, and config-driven workflows.
  • Collaborate with UI teams to power self-service interfaces for business users on Amazon Connect.

Miratech is a global IT services and consulting company that helps visionaries change the world through digital transformation. Retaining nearly 1,000 full-time professionals with a culture of Relentless Performance and a 99% project success rate, the company operates across 5 continents and 25 countries.

UK

  • Lead the design and development of scalable backend services using Java and serverless technologies.
  • Architect RESTful APIs and event-driven systems for high-performance distributed applications.
  • Provide technical leadership and mentor junior engineers to ensure best practices and team growth.

For over 25 years, Turnitin has partnered with educators to develop learning integrity solutions for a rapidly changing world. Over 16,000 academic institutions use its services in more than 185 countries, fostering a remote-first culture with a diverse global team.

Latin America

  • Design and implement robust backend services using Java, Spring, Spring Boot, and Spring Batch.
  • Architect scalable distributed systems and microservices, and build RESTful APIs for core financial products.
  • Mentor junior engineers and enforce best practices while collaborating with stakeholders to align technical solutions with business goals.

Clara is a leading B2B fintech for spend management in Latin America, helping over 20,000 businesses with corporate cards, bill pay, financing, and a B2B platform. It is certified as one of the world's fastest-growing companies, a Great Place to Work, and a LinkedIn Top Startup, with a high-talent-density culture and a team distributed across the Americas.

Global

  • Lead design and development of product features for highly available payment processing, subscription billing, and reporting platforms.
  • Debug and troubleshoot complex issues, optimize system performance, and ensure reliability across money-movement flows.
  • Mentor junior team members and lead adoption of best practices for coding standards, testing, and deployment.

FastSpring is the world's leading ecommerce platform for software and SaaS companies, powering sales growth for over 3,500 companies in more than 200 countries. Founded in 2005 and privately owned, we are an Inc. 5000 honoree with offices globally and a remote-first, inclusive culture.

Norway

  • Design, develop, and maintain cloud-native applications and microservices using Java and Spring Boot.
  • Build intuitive user interfaces with Angular and modern web technologies for a mission-critical platform.
  • Contribute to architectural decisions ensuring high availability, scalability, and disaster recovery.

Everbridge is a global leader in critical communications and enterprise safety solutions, helping governments and organizations protect communities during emergencies. The company employs over 1,500 people across the world, fostering a mission-driven culture focused on saving lives and keeping businesses running.

Global

  • Lead the design, development, and implementation of microservices for the next-generation enterprise campaign management platform.
  • Architect scalable and reliable solutions while collaborating with cross-functional teams including Product Managers and Quality Engineers.
  • Provide technical guidance, conduct code reviews, and stay current with emerging technologies to ensure high code quality and performance.

Miratech is a global IT services and consulting company that helps visionaries change the world. With nearly 1,000 full-time professionals and over 25% annual growth, the company operates across 5 continents and 25+ countries, maintaining a culture of Relentless Performance with a 99% project success rate since 1989.

US

  • Serve as an Agile Scrum team member providing software development and maintenance for deliverable software in short sprint cycles.
  • Design, develop, and implement custom software and database capabilities for legacy and modernized systems with limited oversight.
  • Provide mentoring to junior team members and actively participate in release and sprint planning, testing, and demonstrations.

Peraton is a next-generation national security company that drives missions of consequence for government agencies, including U.S. Customs and Border Protection. As a leading mission capability integrator, the company serves essential government agencies and supports every branch of the U.S. armed forces, employing a team dedicated to solving the most daunting challenges.

US Unlimited PTO 12w maternity 12w paternity

  • Develop core components on an Engineering pod with a focus on scalable backend services and RESTful APIs.
  • Measure and optimize the performance, scalability, and uptime of backend services.
  • Collaborate with product management, customer success, and support to deliver the best user experience.

Branch empowers workers with financial freedom by accelerating payments and providing accessible financial services. They are a remote-first FinTech company with a collaborative culture and employees across the U.S.

Latin America

  • Design, develop, and maintain backend services and APIs for device management software
  • Work with telecom customers like Nokia, Telefonica, and Claro to troubleshoot and resolve software issues
  • Collaborate with a distributed team across Latin America and the US using Agile/Scrum frameworks

GoFasti is a Talent-as-a-Service company that bridges the gap between world-class developers and designers from Latin America and first-class companies globally. The company focuses on remote work and has a distributed team across Latin America and the US.