Java Spring Developer with over 15+ years of experience building scalable, high-performance solutions across diverse industries.
Technical Expertise
✅Spring Ecosystem: Spring Boot, Spring Batch, Spring Cloud, Spring Security, Spring AOP,
Spring MVC, JSP, Thymeleaf.
✅ AI : Claude , Codex , RAG ,Integration with OpenAI
✅Microservices & APIs: Microservices architecture, RESTful APIs.
✅Messaging & Event-Driven Systems: Apache Kafka, WebSocket, STOMP, Socket IO
✅Cloud Integration: AWS (ECS Fargate, S3, EC2, ALB, RDS).
✅Database Design: SQL (MySQL, Oracle, Yugabyte, PostgreSQL, MS SQL Server)
✅DevOps & Containers: CI/CD pipelines, Jenkins, Docker, Podman, Kubernetes
✅Search & Caching: Elasticsearch, Redis, Terracotta Caching
✅System Integration & Legacy Modernization: Seamlessly integrate modern applications with legacy systems
✅Frameworks & Tools: JHipster, Keycloak, Flowable, JBPM, Flyway, MapStruct, JavaFX, Java Swing
✅CMS Solutions: Documentum, Alfresco
✅XML & Web Services: SOAP, RESTful services
✅Reporting Tools: Crystal Reports, JasperReports, BIRT
✅Testing Framework/Tools: Junit5,Selenium,JMeter
Documentum
Java
Spring Boot
RESTful API
SQL
Spring Batch
Spring Security
Docker
Elasticsearch
Apache Kafka
Amazon ECS for Kubernetes
Microservice
Hibernate
Websockets
Swing
Dhiraj D.
Mohali, India
$10/hr
5.0
11 jobs
Free 30-Minute Strategy Call — Let’s Build Something Great
Senior Full-Stack Developer | 7+ Years of Proven Results
I’m a senior Full-Stack Developer with 7+ years of experience in industry and now full time freelancer delivering robust, scalable web, mobile, and enterprise applications. I help businesses in Healthcare, E-commerce, Financial Services, and CRM turn complex requirements into reliable, high-performance solutions.
I handle the entire development lifecycle from architecture and development to deployment and long-term maintenance ensuring speed, quality, and scalability at every stage.
Why Work With Me?
Proven Delivery: 100+ successfully delivered projects across multiple industries
End-to-End Expertise: Frontend, backend, cloud, CMS, and automation
Scalable Engineering: Clean, maintainable code built for long-term growth
Client-Focused: Clear communication, on-time delivery, and reliable support
Tech-Forward: Always aligned with modern tools, frameworks, and best practices
Core Technical Skills:
Full-Stack Development
ASP.NET Core, C#, React js, Next.js, Node.js,Blazor, JavaScript, electron
Frameworks & Platforms
.NET, Laravel, Salesforce, React, AngularJS
CMS Expertise
Strapi, DNN, Orchard Core, Sitefinity, Umbraco, WordPress, Webflow
Databases
MS SQL Server, Postgress, MySQL, Entity Framework, Firebase
Cloud & DevOps
AWS, Azure, VPS, AliBaba, Docker, CI/CD pipelines
Automation
Make, n8n, Zappier
Version Control
Gitllab, Github,SVN
Legacy & Modern Desktop Engineering:
Legacy Systems Specialist: VB6, WinForms, ASP Classic maintenance and modernization
Cross-Era Engineering: WPF to MAUI migrations, hybrid desktop apps, and legacy-to-API integrations.
Recent Project Highlights:
Global e-commerce platform built with ASP.NET Core and Angular
Secure cross-platform healthcare application with backend integrations
Custom CRM system with advanced analytics and reporting
Cloud-deployed inventory management solution
Business workflow automation using Make and n8n
Infrastructure & Hosting Experience:
AWS: ECS (Fargate), EC2, S3, RDS, Route S3, IAM
Firebase: Hosting, Firestore
Web Hosting: VPS, Nginx, cPanel
Deployment Platforms: Vercel, DigitalOcean , Hostinger
Security & Performance: Cloudflare
🤝 Let’s Work Together
If you’re looking for a reliable senior developer who delivers results, communicates clearly, and adds long-term value to your product—I’d be happy to help.
Let’s discuss your goals and build something scalable, secure, and future-ready.
ASP.NET
WordPress
React
Next.js
DNN
C#
Node.js
Umbraco
Webflow
Elementor
Back-End Development
Web Application
CMS Development
Amazon ECS
Firebase
Strapi
nopCommerce
Docker Compose
Laravel
Web Development
RAJ U.
Bikaner, India
$16/hr
4.9
572 jobs
Why Clients Hire Me
⭐ 10+ Years of Experience
⭐ Adobe Acrobat & Fillable PDF Expert
⭐ DocuSign Workflow Specialist
⭐ Adobe InDesign Document Design
⭐ Business Automation with Zapier & Make
⭐ Fast Turnaround & Clear Communication
⭐ MS Word Documents Formatting
Are you spending too much time on manual paperwork, repetitive tasks, or poorly designed documents?
I help businesses transform their document processes into professional, efficient, and automated systems that save time, reduce errors, and improve productivity.
With over 10 years of experience, I specialize in creating interactive PDFs, DocuSign workflows, professional document layouts, and business automation solutions that streamline operations and enhance the user experience.
My Expertise
⭐Fillable PDF Forms (Adobe Acrobat Pro)
• Convert static PDFs into professional interactive forms
• Text fields, checkboxes, dropdowns, calculations, and validations
• Digital signature fields and automated form functionality
• User-friendly, polished, and business-ready documents
⭐DocuSign & E-Signature Solutions
• Custom DocuSign templates and workflows
• Multi-recipient signing processes
• Automated document routing and notifications
• Legally compliant electronic signature solutions
⭐Adobe InDesign Document Design
• Reports, workbooks, manuals, brochures, and booklets
• Clean, modern, and professional layouts
• Print-ready files with proper formatting and typography
• Consistent branding across all documents
⭐Business Process Automation
• Zapier and Make (Integromat) workflow automation
• Form-to-PDF automation systems
• Automated email notifications and document delivery
• Integration with Google Workspace, Microsoft 365, CRMs, and other business tools
⭐Tools & Platforms
Adobe Acrobat Pro • Adobe InDesign • DocuSign • Zapier • Make (Integromat) • Google Workspace • Microsoft Office
If you're looking for a professional who can turn manual processes into smart, efficient systems while delivering clean and polished documents, I'd be happy to discuss your project.
Adobe InDesign
Adobe Photoshop
Adobe Acrobat
Graphic Design
JavaScript
Microsoft Word
Ebook Formatting
DocuSign
Virtual Assistance
Fillable Form
Make.com
Zapier
PandaDoc
Automated Workflow
Data Entry
Haikal H.
Sleman, Indonesia
$48/hr
5.0
14 jobs
Reliable web scrapers & data pipelines that turn messy public data into clean, decision-ready datasets — at scale (100K+ records/day). 100% Job Success · 5.0★ · previously built 100,000+ RPS systems at ByteDance.
I help teams collect, clean, and visualize data they can act on — from large-scale scraping to ETL pipelines and interactive dashboards. I care about clarity, reliability, and compliant data collection (robots.txt, ToS, rate limits, rotating proxies).
What I deliver
✅ Web & social scraping (public data): Twitter/X, Instagram, YouTube, news, e-commerce
✅ ETL pipelines: cleaning, normalization, deduplication, scheduling, alerting
✅ Dashboards & data-viz: React/TypeScript, ECharts/D3, filters, maps, CSV/PDF export
✅ APIs & integrations: REST, auth, pagination, caching
✅ Deployment & handover: Docker, CI/CD, cron/Airflow, clear docs + maintenance plan
Recent results
• Pipelines processing 100K+ records/day across Twitter/IG/YouTube/news for sentiment & NER analysis
• Operated an 8-server HPC cluster — reliability +25%, processing time −40%
• Distributed scrapers with queueing (RabbitMQ) + monitoring (Grafana/Prometheus), ~99% uptime
🧰 Stack — Python (Scrapy, Playwright, Selenium, BeautifulSoup, Pandas), Node.js, PostgreSQL/MongoDB/Elasticsearch, Airflow/Prefect/Cron, RabbitMQ, Docker, GitHub Actions, GCP/AWS · React, TypeScript, Next.js, ECharts/D3.
Available for long-term collaboration and one-off projects. Tell me about your data and the decision it needs to drive — I'll propose the simplest reliable approach.
CSS 3
React
JavaScript
TypeScript
MySQL
MongoDB
Tailwind CSS
Next.js
Progressive Web App
Vue.js
PDF
PDF Conversion
Python
Puppeteer
Selenium
Kamran M.
Lahore, Pakistan
$20/hr
4.8
13 jobs
You need a real engineer - not a no-code automation guy. I build production AWS systems that scale.
I'm Kamran, an AWS-specialized Full Stack Engineer with 5+ years delivering SaaS platforms, serverless backends, and AI-integrated applications - all built natively on AWS.
---
🏆 What I've delivered:
- SaaS platforms with multi-tenancy, billing, and RBAC on AWS
- AI-powered chatbots and automation using Bedrock, Lex, Comprehend, Polly, Textract
- Browser automation systems with Playwright running on ECS Fargate + SQS
- Document intelligence pipelines - extract, summarize, classify at scale
- Enterprise HCM platforms serving Middle East organizations on AWS
- Infrastructure as Code with CDK - clean, auditable, repeatable
---
💡 You should hire me if:
- You're building a SaaS product and need solid AWS architecture
- You need AI features built into your product - chatbots, document processing, summarization, transcription, ai processing
- You want serverless that actually works in production, not just demos
- You need an engineer who owns the problem end to end
---
🔹 AWS Stack:
Lambda · Step Functions · CDK · API Gateway · DynamoDB · Aurora · Cognito · EC2 · ECS · ECR · S3 · SQS · SNS · EventBridge · IAM · Bedrock · AgentCore · Lex · Comprehend · Textract · Polly · Transcribe · Rekognition · CloudWatch · Amazon Connect · AgentCore · RDS · ElastiCache · Athena · Glue · Kinesis · Redshift · VPC · Route 53 · CloudFront · ACM · WAF · Secrets Manager · Parameter Store
🔹 Supporting Tech:
Node.js · NestJS · Python · FastAPI · React · Next.js · PostgreSQL · Kafka
---
Quality, Commitment, and Trust — on every project.
📩 Tell me what you're building. Let's ship it on AWS.
Python
MongoDB
PostgreSQL
AWS Lambda
Serverless Computing
Retrieval Augmented Generation
Amazon Bedrock
Chatbot
Amazon Web Services
Spring Boot
Generative AI
SaaS Development
Amazon ECS
FastAPI
Full-Stack Development
Node.js
Naseem A.
Pune, India
$25/hr
5.0
349 jobs
⚡ Available now - 🏆 Top Rated Plus - Document Remediation/PDF Accessibility Expert
🎯Adobe Acrobat Pro | CommonLook | axesPDF | Word | Excel | Powerpoint
Hello! 👋 I'm Naseem, and I'm thrilled to have you here.
My passion is working with PDFs, especially in Accessibility and Document Remediation. I have over 14 years of experience in document accessibility (Word, Excel, and PPT), particularly in PDF Accessibility. As part of my work, I ensure compliance with WCAG, ADA, AODA, #A11y, Section 508, and EAA (European Accessibility Act) requirements. I can handle projects of any level of difficulty.
✔What I will do:
I manually test all PDF files, including heading levels, tables, lists, and alt text for images, to ensure they meet WCAG 2.1 AA & 2.2 AA (WCAG (ISO/IEC 40500:2012), PDF/UA (ISO 14289)) accessibility standards. I use leading accessibility tools, including PDF Accessibility Checker (PAC 2024 and PAC 2026) and CommonLook PDF Validator, to deliver 100% error-free documents. I am also proficient with JAWS (2021 and 2024) and NVDA screen readers. With my extensive experience, skills, and knowledge, I am ready to help you achieve success in your project.
✔️Test and Remediate Documents (PDF, Forms, Word, Excel, PowerPoint)
✔️ WCAG 2.1/2.2 AA & ADA Standard
✔️ PDF Accessibility Checker (PAC 2/3/2021/2024/2026)
✔️ CommonLook PDF validator
✔️ Section 508 Compliance
✔️ PDF Fillable Forms with Accessibility
⭐️Key steps:
1. Use Heading Styles: Ensure proper heading hierarchy (H1, H2, H3, etc.).
2. Add Alt Text: Provide meaningful alternative text for images, charts, and graphics.
3. Descriptive Links: Use descriptive hyperlink text instead of raw URLs.
4. Use Tables Correctly: Ensure tables are used for data, not layout, and include headers.
5. Avoid Color Dependence: Ensure information is not conveyed by color alone.
6. Check Language Settings: Set the document's primary language.
⭐️Core services:
1. Fillable PDF forms with calculations, validation, buttons, and clean field structure
2. PDF editing, conversion, OCR, redaction, compression, merging, splitting, and optimization
3. Microsoft Word and Google Docs formatting, templates, reports, TOC, styles, forms, and mail merge
4. PowerPoint and Google Slides design, cleanup, slide masters, pitch decks, reports, and presentations
5. Excel and Google Sheets cleanup, formulas, dashboards, charts, templates, and automation
✔️SKILLS
Skills that help me succeed and realize my passion include Adobe Acrobat DC Pro, PDF accessibility, PDF forms, ABBYY FineReader, OCR, HTML/CSS, JavaScript, customized PDF stamps, InDesign, PowerPoint, Excel, and Word.
Thanks,
Naseem A.
Ada
Section 508
Adobe Acrobat
Web Content Accessibility Guidelines
Document Conversion
ABBYY FineReader
Microsoft Word
Word Processing
Accuracy Verification
Graphic Design
PDF Conversion
SEC Reporting
Web Accessibility
Data Extraction
PDF Pro
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