Spring Security Developers For Hire
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Sponsored Freelancers
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Hire MohammadJuned27
At InnoForge Technologies, we turn early-stage ideas into working software — for startups, founders, and growing businesses. Our focus is building smart, connected systems: platforms that think, apps that scale, and processes that run themselves. We design and ship AI-integrated products, cross-platform mobile apps,...At InnoForge Technologies, we turn early-stage ideas into working software — for startups, founders, and growing businesses. Our focus is building smart, connected systems: platforms that think, apps that scale, and processes that run themselves. We design and ship AI-integrated products, cross-platform mobile apps, and web solutions — taking projects from first prototype to a stable, enterprise-ready release. What we bring to the table: Intelligent process design using n8n, OpenAI, and Gemini APIs Solid backend engineering with Spring Boot, Node.js, and REST APIs Cloud infrastructure - Docker, Google Cloud, Firebase, CI/CD Mobile builds in React Native, Flutter, for Android & iOS Web builds in React.js and Next.js Interface design in Figma & Canva We handle the full arc of a product - strategy, design, build, deployment, and the maintenance that keeps it running - so what you launch keeps working long after day one. less -
Hire iosifpeterfi
CompTIA Security+ and Microsoft MCSE/MCSA/MCITP certified, with 15+ years of experience, 100+ delivered projects, and a 4.9 Freelancer rating across 101 reviews. I help businesses build, improve, and maintain software and infrastructure they can rely on. Clients usually come to me when they need someone who can take...CompTIA Security+ and Microsoft MCSE/MCSA/MCITP certified, with 15+ years of experience, 100+ delivered projects, and a 4.9 Freelancer rating across 101 reviews. I help businesses build, improve, and maintain software and infrastructure they can rely on. Clients usually come to me when they need someone who can take ownership—not just complete isolated technical tasks. I help launch new platforms, modernize existing systems, improve reliability and performance, automate operations, and solve problems that are slowing the business down. My focus is always the outcome: stable systems, smoother operations, less downtime, easier maintenance, and a setup that can grow with the business. I'm based in Germany and communicate fluently in English (C2), German (C1), and Romanian (native). I also operate my own hosting infrastructure, which can be useful for development, staging, testing, and deployment when a project needs it. You can expect clear communication, realistic commitments, and dependable follow-through. I'm also available after delivery for ongoing development, maintenance, monitoring, improvements, and long-term technical support. If you need someone experienced who can take responsibility for the technical side and stay involved long-term, I'd be glad to help. less -
Hire adi30102000
I build and ship complete products: web app, mobile app, backend, admin panel, deployment. Recently delivered, all live and in use: • A multi-tenant contract and document management platform used by teams worldwide • A real-time social app for the UK market (live chat, presence, moderation) • A family...I build and ship complete products: web app, mobile app, backend, admin panel, deployment. Recently delivered, all live and in use: • A multi-tenant contract and document management platform used by teams worldwide • A real-time social app for the UK market (live chat, presence, moderation) • A family financial-planning platform for India with its own CRM and content system • An ongoing CRM, website and content-automation engagement for a construction company How I work • Clear scope and fixed milestones before any code • A working demo every week, not just status updates • You get full source code, a Git repository, setup docs and a handover walkthrough • 30 days of bug fixes after delivery Stack: Next.js, React, Spring Boot (Java), PostgreSQL, Redis, Flutter, Kotlin (Jetpack Compose). Tell me what you're building and your deadline. I'll reply with a scoped plan, not a template. less -
Hire itsAhesan
I build production REST APIs in Java + Spring Boot every working day — and I bring the same standard to freelance work: reviewed code, tested endpoints, clean handover your next developer can read without a headache. I'm a Java backend developer at a software development center in Bangalore, with about 1.5 years of...I build production REST APIs in Java + Spring Boot every working day — and I bring the same standard to freelance work: reviewed code, tested endpoints, clean handover your next developer can read without a headache. I'm a Java backend developer at a software development center in Bangalore, with about 1.5 years of hands-on experience on real projects — Agile sprints, code reviews, real deployments. New to Freelancer, not new to shipping. WHAT I CAN BUILD FOR YOU • REST APIs with Spring Boot — layered architecture, request validation, proper error handling, documented and tested in Postman • Authentication done properly — Spring Security with JWT tokens and role-based access control • MySQL with JPA/Hibernate — schema design, plus fixing slow queries, N+1 problems, and missing indexes • AWS S3 integration — file upload/download so storage scales with your app • Clean Git workflow, Maven/Gradle builds, deployment support HOW I WORK • Every endpoint ships with a Postman collection, so you can verify it yourself before releasing a milestone • Clear daily updates in plain English — you always know where your project stands • Honest scoping — I only take projects I know I can deliver, quote realistic timelines, and tell you upfront if something is outside my depth My rate is deliberately low while I earn my first reviews here: day-job production quality at a newcomer price. Message me with what you're building — you'll get questions, a concrete plan, and a milestone breakdown the same day. less -
Hire LonelyJavaCoder
LonelyJavaCoder LonelyJavaCoder
$10 USD / hour
Java 8 | Spring Boot | REST API | MicroservicesIndiaHi, I’m Kundan Kumar, a passionate Java Developer with 5+ years of professional experience building scalable backend systems. I specialize in developing REST APIs, microservices, and banking/fintech applications using modern Java frameworks. ✅ Tech Stack: Java 8–17, Spring MVC ,Spring Boot ,Spring Security ,...Hi, I’m Kundan Kumar, a passionate Java Developer with 5+ years of professional experience building scalable backend systems. I specialize in developing REST APIs, microservices, and banking/fintech applications using modern Java frameworks. ✅ Tech Stack: Java 8–17, Spring MVC ,Spring Boot ,Spring Security , Hibernate ,JPA REST APIs, Microservices, Kafka, RabbitMQ MySQL, PostgreSQL, MongoDB ,Oracle Docker, AWS EC2, EKS, Jenkins CI/CD Unit Testing (JUnit, Mockito) Angular , HTML , CSS , JavaScript ,Jquery ✅ What I can do for you: Build or optimize backend services Design REST APIs or microservices Integrate with databases or 3rd party APIs Debug, refactor, or enhance existing Java apps Deploy Java apps to AWS / Docker 💬 Let’s discuss your project — I deliver clean, efficient, and maintainable code with proper documentation and testing. Project : “Banking loan management API using Spring Boot & MySQL” “Microservices-based loan processing system” “E-commerce backend with JWT security” less -
Hire emilesd617
Hello, I can start immediately and can dedicate to your project full-time, 40+ hrs/week during your working time. I've 8+ years of experiences and specialized in C#, VB, .Net, Devexpress, JavaScript, Node.js, React, Next.js, Mobx, GraphQL, Neo4j, Tailwind CSS, SCSS, GPT, TypeScript, API integration, etc. I'm an...Hello, I can start immediately and can dedicate to your project full-time, 40+ hrs/week during your working time. I've 8+ years of experiences and specialized in C#, VB, .Net, Devexpress, JavaScript, Node.js, React, Next.js, Mobx, GraphQL, Neo4j, Tailwind CSS, SCSS, GPT, TypeScript, API integration, etc. I'm an excellent English speaker/communicator with good collaboration experience. Looking forward to discussing more details. Best regards. Emile. less -
Hire albercuenca5
albercuenca5 albercuenca5
$30 USD / hour
Software Engineer |Java |Spring boot |aws |dockerMozambiqueSoftware Engineer specializing in Java and backend development, focused on designing and delivering scalable, secure, and high-performance systems. I work extensively with Spring Boot, Spring Data JPA, Hibernate, and RESTful architectures to build reliable and maintainable backend platforms. My experience includes...Software Engineer specializing in Java and backend development, focused on designing and delivering scalable, secure, and high-performance systems. I work extensively with Spring Boot, Spring Data JPA, Hibernate, and RESTful architectures to build reliable and maintainable backend platforms. My experience includes working with distributed systems, leveraging Kafka, Redis, and Docker to create robust, fault-tolerant solutions. I also integrate cloud-ready patterns and AWS services to support efficient deployments and production-grade environments. I apply Clean Architecture, domain-driven principles, and strong engineering practices to ensure code quality, extensibility, and long-term maintainability. I’m skilled at diagnosing complex issues, optimizing performance, and elevating the reliability of backend systems. I’m driven by building high-quality products, improving developer experience, and contributing to architectures that scale intelligently and sustainably. ⚙️ Technical Abilities - Java (8–21+) - Spring Boot / Spring Web / Spring Data JPA - Hibernate - JUnit / Mockito - RESTful API design & documentation - PostgreSQL / MySQL - MongoDB - Redis (caching, rate limiting, session management) - Kafka (event-driven architectures) - Docker / Docker Compose - AWS (Lambda, API Gateway, ECS, S3) - CI/CD pipelines - Clean Architecture & SOLID principles - Git & GitHub 🛠️ Tools - IntelliJ IDEA - Maven / Gradle - Git & GitHub - Swagger / OpenAPI - Postman / Insomnia - Jenkins / GitHub Actions 🧩 Personal Qualities - Fast learner and highly adaptable - Strong analytical and problem-solving skills - Organized and detail-oriented - Effective communicator - Passionate about improving user experience - Open to giving and receiving constructive feedback - Committed to writing clean, testable, and reliable code less
