Hire the Best Java Developers in New Jersey

I don't just write code, I architect & build systems that process millions of records, reduce company costs, and stay alive at scale. I am a 𝗨𝗦-𝗯𝗮𝘀𝗲𝗱 𝗦𝗲𝗻𝗶𝗼𝗿 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗮𝗻𝗱 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿, 𝗖𝗹𝗼𝘂𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝘄𝗶𝘁𝗵 𝗼𝘃𝗲𝗿 𝟴 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲-𝗹𝗲𝘃𝗲𝗹 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 building high-performance systems for Fortune 500 companies, including JPMorgan Chase and Ford Motor Company. ⭐ What a recent client said: "Hamza was great to work with and I'd highly recommend him." — 5.0 ⭐ |Software Engineer project Data Engineering | Cloud Solutions (AWS/GCP/Azure) | Full Stack Java & Python Backend Development | ETL Pipelines | Spring Boot | SQL Performance Tuning | Apache Hadoop & Spark | Snowflake | dbt | Enterprise Backend Systems I specialize in designing scalable backend microservices, optimizing slow databases, and architecting heavy big data pipelines that process millions of records without downtime. ⚡ 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 & 𝗦𝗧𝗔𝗖𝗞 ◆ Data Engineering & ETL Apache Spark, Apache Hadoop, Apache Beam, Apache Hive, Apache Airflow, GCP Dataflow, AWS Glue, dbt, SSIS, Talend, Snowflake, BigQuery, Spring Batch, Spring Cloud Dataflow, Data Ingestion Pipelines, Data Warehouse Design ◆ Cloud & DevOps GCP (Cloud Run, Cloud Functions, BigQuery, Pub/Sub, GKE, Dataflow) AWS (Lambda, EC2, S3, RDS, Redshift, EKS, CloudWatch, CloudFormation) Azure (AKS, Sentinel, Defender for Cloud, DevOps, Landing Zones) Terraform, Kubernetes, Docker, GitHub Actions, Jenkins, Tekton, Azure DevOps, Control-M ◆ Database & Administration PostgreSQL, SQL Server, MongoDB, MySQL, Oracle, Redshift, DynamoDB, BigQuery, Redis, Snowflake, SQL Performance Tuning, Schema Design, High Availability (Always On, Failover Clustering, Log Shipping), SSRS Reporting, Backup & Recovery ◆ Backend Development Java (8, 11, 17), Spring Boot, Spring Security, Spring Batch, Spring Cloud Dataflow, Hibernate, JPA, JWT Authentication, Microservices Architecture, Multi-threading, Python, FastAPI, Django, Flask, Node.js, NestJS, TypeScript ◆ API & Integrations RESTful APIs, GraphQL, gRPC, WebSockets, Apigee, Swagger/OpenAPI, Payment Gateways, Google APIs, Power BI, Qlik Sense, Open Banking Connectors, Active Directory, ADFS, Zapier, Stitch ◆ Full Stack Development React.js, Next.js, Node.js, Redux, TypeScript, Tailwind CSS, Angular ◆ Testing & Monitoring JUnit, Mockito, MockMVC, Jest, TDD, Integration Testing, Grafana, Splunk, GCP Cloud Monitoring, Azure Sentinel, Webex Alerting, Legacy System Cloud Migration ◆ AI & Developer Tools Claude Code, Cursor, OpenAI Codex, AI/ML Pipeline Integration, LLM-based Workflows, Intelligent Automation 📌 𝗥𝗘𝗦𝗨𝗟𝗧𝗦 𝗜'𝗩𝗘 𝗗𝗘𝗟𝗜𝗩𝗘𝗥𝗘𝗗 ▸ Built core credit card banking microservices at 𝗝𝗣𝗠𝗼𝗿𝗴𝗮𝗻 𝗖𝗵𝗮𝘀𝗲 handling millions of daily transactions ▸ Architected GCP Dataflow pipelines at 𝗙𝗼𝗿𝗱 𝗠𝗼𝘁𝗼𝗿 𝗖𝗼𝗺𝗽𝗮𝗻𝘆 processing millions of records into BigQuery daily ▸ Delivered digital banking platforms powering retail and corporate banking across open banking environments ▸ Reduced ETL data processing times by over 99% for healthcare and enterprise clients ▸ Built mobile backend microservices at 𝗝𝗲𝘁𝗕𝗹𝘂𝗲 𝗔𝗶𝗿𝘄𝗮𝘆𝘀 serving thousands of daily travelers ▸ Administered high-availability database systems for federal government procurement 🏭 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 Fintech · Digital Banking · Healthcare · Government · Automotive · Enterprise SaaS · Education · E-commerce · Travel & Hospitality · Open Banking ✅ 𝗣𝗘𝗥𝗙𝗘𝗖𝗧 𝗙𝗜𝗧 I work best with teams who: → Need Java or Python expertise without hand-holding → Have APIs, pipelines, or databases that need fixing or scaling → Are building on AWS, GCP, or Azure and need someone who knows these environments → Want clean maintainable code delivered on time → Need a developer who can also talk to clients and stakeholders professionally I communicate clearly, deliver on time, and bring Fortune 500 engineering standards to every project regardless of size. Ready to build something that scales? Send me a message or 𝗰𝗹𝗶𝗰𝗸 𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯. I respond within a few minutes. Data Engineer · ETL Developer · Spring Boot · Cloud Architect . Cloud Engineer . Cloud Migration. Azure Enginer . AWS. GCP . Java Developer · Python Developer · Backend Developer · FastAPI · Django · Flask · REST API · GraphQL · Microservices · Apache Spark · Apache Airflow · dbt · Snowflake · AWS · GCP · Azure · Terraform · Kubernetes · Docker · PostgreSQL · SQL Server · MongoDB · Node.js · React.js · Full Stack Developer · Cloud Architect · API Integration · Data Pipeline · Data Warehouse · CI/CD · BigQuery · Kafka · Redis ·

AI Agent Developer specializing in LangChain, LangGraph, RAG systems, and n8n/Make automation. I've shipped 80+ production AI systems for startups and enterprises across the US, Europe, and Middle East. Most AI projects fail not because the model is wrong, but because the architecture doesn't hold up in production. I build AI agents and LLM applications that actually work at scale from multi-agent orchestration with CrewAI and AutoGen to RAG pipelines using LlamaIndex, ChromaDB, and Pinecone, to voice agents with Vapi and Twilio. ✦ Services: ✦ AI Agent Systems — LangChain, LangGraph, CrewAI, AutoGen; multi-step reasoning agents, tool-use pipelines, autonomous workflow agents ✦ RAG & Knowledge Systems — LlamaIndex, LangChain, Pinecone, Qdrant, ChromaDB, FAISS; document Q&A, enterprise knowledge bases, semantic search ✦ Voice AI Agents — Vapi, Twilio, Whisper, ElevenLabs; AI phone agents, voice assistants, real-time speech workflows ✦ Workflow Automation — n8n, Make, Zapier; end-to-end business process automation, CRM/ERP integrations ✦ LLM Applications — OpenAI GPT-4o, Claude, Gemini, Llama; custom chatbots, conversational AI, API integrations ✦ Full-Stack AI — FastAPI, Python, Node.js, React; production-grade AI backends and interfaces ✦ Proven results: ✦ Built a LangGraph multi-agent system that automated 90% of a client's content pipeline, saving 40+ hours/week ✦ Deployed a RAG-based enterprise knowledge base (Pinecone + LlamaIndex) reducing support ticket resolution time by 65% ✦ Delivered an n8n + OpenAI workflow automation that replaced 3 manual FTEs for a logistics startup If you're building an AI agent, RAG system, voice AI, or automation workflow, message me with your use case. I'll tell you within 24 hours if and how I can help.

Hi, I am Sagar, an Upwork "Rising Talent", which means I am on my path to becoming Upwork's "Top-Rated" Freelancer, which depicts my Job Success Score to be promising by delivering quality standards on time. I am a Seasoned Technical Recruiter with 8 years of professional experience in Full lifecycle End-to-End Technical Recruiting I am an expert in: - LinkedIn Recruiter - Boolean search string variants - Indeed passive sourcing - X-ray Search - Establishing Network connections - GitHub - AI Recruiting rules and methods, Talent GPT, Chat GPT, GoHire - Stack Overflow, - ATS(iCIMS, Beamery, Greenhouse, Lever, Zoho, cBIZ, Jobscore, Amazon Hire) - ycombinator(Hackernews) Job posting - Job Posting - Internal and External(LinkedIn feed, Linked Groups, Indeed, Glassdoor) - Social Media (Facebook, Instagram, Twitter) - Calibrating technical competencies with HM's and Prospects - Technical candidate screening on questionnaires - Building candidate relationships to find a synergistic match - Mentoring Candidates until onboarding - Candidate Interview Preparation - Interview Coordination and Scheduling - Full Onsite Loop strategizing, pre-briefing, debriefing, and feedback documentation with business stakeholders. My Technology Knowledge: - Software Development Engineering (Fungible) - Software Engineering Engineering (Backend, Front End, Full Stack, Firmware, Embedded, IoT, IOS, and Android) - Data Science and optimization - UGC(User Guided Content) Creators - UI/UX Designers - Data Engineering - DevOps and Cloud Engineering - Cyber Security - Technical Project Management - Network and System Engineering My Education: - Masters in Information Systems - Bachelors in Computer Science - Independent Study Thesis - Technical Recruitment A passionate and self-motivated individual to find the best talent in the industry retaining long-time connections and building a targeted database. Hire me to discover smart insights in dealing with candidates and hiring managers. Let's work together to help reach your business its highest hiring potential.

❇️ 100% High-quality work ❇️ I offer comprehensive expertise in designing, implementing, and managing robust network infrastructures and automated DevOps pipelines. My skills ensure seamless operations, enhanced security, and optimized performance for your business needs. Below are my general skills: ❇️ DevOps: GitLab, GitHub, Azure DevOps. Project support, CI/CD ❇️ Optimization of Google Pagespeed, Magento, WordPress, ODOO, Mautic, Drupal, Joomla, Bitrix, Bitrix24, and other CMS ❇️ Operating Systems: Debian, Ubuntu, CentOS, Rocky Linux, AlmaLinux, RedHat, CloudLinux, Gentoo, FreeBSD (administration, configuration, audit, optimization) ❇️ Software Configuration Management: Salt, Ansible ❇️ Web servers: Nginx, Apache, LiteSpeed (installation, configuration, optimization) ❇️ Database servers: MySQL, PostgreSQL, MariaDB, Percona, MongoDB (installation, configuration, optimization, profiling, cluster creation) ❇️ Mail servers: Exim, Postfix, Sendmail, Zimbra, Qmail, Dovecot + Spamassassin, ClamAV ❇️ Webhosting Administration Panels: cPanel / WHM, Plesk, aaPanel, Proxmox, CyberPanel, VestaCP, HestiaCP, ISPManager, Billmanager, ISPConfig, DirectAdmin, Webmin ❇️ Amazon: AWS setup or Amazon tools ❇️ Virtualization: Proxmox, OpenVZ, XEN, KVM, VMWare, VirtualBox, Docker ❇️ Load balancing via: HAproxy, Nginx, Pingora, ProxySQL, PowerDNS, BIND, Route53, Alibaba Cloud DNS ❇️ System Backup and Restore automation ❇️ Network services: DNS (Bind, PowerDNS), VPN (MPD, PPTPD, OpenVPN), firewalls (iptables, ipfw), file server (samba3/4), proxies (Squid, 3proxy, Privoxy, Nginx), DRBD, Ceph, GlusterFS, lsyncd ❇️ Monitoring: Zabbix, Munin, Nagios, Icinga ❇️ FTP: Vsftp, Pureftp, Proftpd Let’s Connect: If you're looking for a reliable and experienced Senior Network Administrator and DevOps Specialist to optimize your network and streamline your development processes, let's discuss how I can add value to your team.

I am a Java Software Developer with 5 years of experience looking forward to apply all my knowledge in your projects. I use Spring Boot Framework, Hibernate, JPA ect, on the daily basis to create nice logic on data retrieved from Oracle/PostgreSQL/MongoDB. Also I have experience in Angular, working as front-end dev for small projects. I love to work with data and I use R as my favorite tool to do pre-processing tasks(clean data, merge data from different type of files and prepare for further elaboration). I would read data from anywhere (files, databases and websites), and I would create web API-s in R (plumber).