Hire the Best Functional Programmers
in India

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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of Upwork by G2 peer reviewers
Purvi R.

Ahmedabad, India

$20/hr
4.8
238 jobs

I prevent costly post-launch disasters for AI-powered applications and FinTech platforms—catching critical bugs before your users do. 16+ years | 150+ applications tested | 24,000+ billable hours | Top Rated Plus I specialize in what fewer than 1% of QA engineers can do: testing ChatGPT integrations, LLM applications, and AI-driven products. My Specialized Edge: AI Testing AI/LLM Testing Capabilities: Prompt injection & edge case validation for GPT-powered features Hallucination detection and response accuracy verification Multi-turn conversation flow testing for chatbots API integration testing (OpenAI, Anthropic, Claude, custom models) Compliance validation for AI outputs in regulated industries What You Get ✅ Custom test strategy from day one ✅ Critical path testing of core user flows ✅ Prioritized bug reports with clear reproduction steps ✅ Weekly progress updates and proactive recommendations ✅ Zero surprises at launch Core Services Manual Testing: Functional | Regression | Exploratory | UAT | UI/UX | Cross-browser/platform compatibility Specialized Testing: AI/ChatGPT apps | API Testing (Postman) | Payment flows | Healthcare & FinTech compliance QA Leadership: Test planning | Bug reporting (JIRA, TestRail) | Process optimization Industry Expertise ✓ AI & Emerging Tech: ChatGPT, LLM apps, AI chatbots ✓ FinTech: Payment gateways, banking apps, financial dashboards ✓ Healthcare: HIPAA-compliant apps, telemedicine platforms ✓ SaaS: CRM, B2B/B2C platforms, cloud applications ✓ eCommerce: Checkout flows, inventory systems Warning Signs You Need Me ⚠️ Your AI chatbot gives inconsistent responses ⚠️ Payment flows are untested with real transactions ⚠️ You're 2-4 weeks from launch with no test coverage ⚠️ Previous QA missed critical bugs users found ⚠️ You're in healthcare/finance where compliance isn't optional What Clients Say "Purvi caught critical issues before launch. Her communication is outstanding—she feels like part of our team." — SaaS Startup Founder "Professional and thorough. Purvi's testing prevented a disaster for our FinTech product." — Product Manager, Financial Services "Best QA freelancer we've worked with. Fast turnaround, clear reports, exceptional quality." — Healthcare Tech Company My Commitment ⚡ 4-hour response time during business hours 📊 Weekly reports with full transparency 🎯 Test coverage that prevents issues before production 🌍 Flexible with your timezone, tools, and workflows Next Steps Message me with: Brief app description Your timeline Biggest QA concern I'll send a custom test strategy outline within 24 hours. Most clients start within 48 hours. Tools: JIRA | TestRail | Postman | BrowserStack | Charles Proxy | Selenium | Slack | Azure DevOps | GitHub Let's build software your users will love—and trust.

  • Web Testing
  • Functional Testing
  • Mobile App Testing
  • Usability Testing
  • Jira
  • Manual Testing
  • Test Case Design
  • Test Plan
  • User Interface Design
  • Bug Reports
  • Game Testing
  • Regression Test Script
  • Campaign QA
  • QA Engineering
  • Trello
Brijesh V.

Gondal, India

$30/hr
5.0
15 jobs

Hi there! 👋 Passionate about Odoo, Python, and AI, and always excited to help businesses grow with the right tech solution. I am an Odoo Functional Certified Developer and Python Developer with 5 years of experience building intelligent, scalable, and business-focused ERP solutions. I help companies manage their operations, automate manual work, and implement complete Odoo systems tailored to their exact workflow. I have delivered Odoo projects for businesses of all sizes and across all industries. From custom module development to workflow automation and API integration, I handle end-to-end Odoo implementation from planning to deployment. Before writing a single line of code, I take time to listen, ask the right questions, and make sure the solution fits the exact workflow, not just the brief. What I bring to every project is clear communication, honest timelines, and a genuine desire to deliver something the client is truly proud of. 𝗠𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: • Odoo ERP, Community and Enterprise v14, v15, v16, v17, v18, v19 • Python 3, Django, Flask, REST API • AI and ML, OpenAI API, TensorFlow, Keras, Scikit-learn • NumPy, Pandas, Matplotlib • HTML5, CSS3, JavaScript • PostgreSQL, MySQL • AWS, Google Cloud Platform • Git, GitHub, GitLab, Bitbucket 𝗠𝘆 𝗢𝗱𝗼𝗼 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝒔: Odoo SaaS • Custom Modules • Odoo Migration • ERP Implementation • Support & Maintenance • Odoo Consulting • Website Development • Application Development • API Integration • Cloud Deployment 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗦𝗲𝗿𝘃𝗲𝗱 𝘄𝗶𝘁𝗵 𝗢𝗱𝗼𝗼 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻: Manufacturing • Education • Healthcare • Real Estate • Retail • Wholesale • Hospitality • eCommerce • Logistics & Transportation • Supply Chain and Storage • Services 𝗦𝗼𝗺𝗲 𝗗𝗲𝘁𝗮𝗶𝗹𝘀 𝗔𝗯𝗼𝘂𝘁 𝗠𝘆 𝗢𝗱𝗼𝗼 𝗪𝗼𝗿𝗸 : → I can help with any kind of module development in Odoo v14 to v19, both Community and Enterprise editions. → I can develop new custom modules and modify standard modules using proper Odoo inheritance concepts, keeping everything clean and upgrade-friendly. → I can integrate AI-powered chatbots into Odoo using the OpenAI API, allowing businesses to automate customer support and internal workflows directly within their ERP system. → I can build AI-based forecasting models that connect with Odoo Sales, Inventory, and Accounting modules to give businesses real-time predictions and smarter decision-making. → I can help with both technical and functional Odoo support so you always have one reliable person who understands the full picture. → I can help with Odoo server setup and deployment, including Nginx and Apache configuration, port forwarding, and cloud hosting on AWS and Google Cloud. 𝗖𝗼𝘂𝗻𝘁𝗿𝗶𝗲𝘀 𝗜 𝗛𝗮𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗪𝗶𝘁𝗵: 🌍 India • Canada • Australia • Germany • South Africa • Portugal • Thailand • Switzerland • France • Philippines • USA • Saudi Arabia • Jordan • Dubai, UAE • Afghanistan 𝗔𝗜 𝙖𝙣𝙙 𝗠𝗟 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: • AI-powered Odoo chatbots using the OpenAI and ChatGPT API • AI-based sales and inventory forecasting inside Odoo • Machine learning models for demand planning and business intelligence • Odoo workflow automation using AI to reduce manual work • Smart reporting and data insights powered by AI 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: • Custom web application development with Python, Django, and Flask • REST API development and third-party system integration • Frontend development with HTML5, CSS3 and JavaScript • Cloud infrastructure setup and deployment on AWS and GCP • Database design and optimization with PostgreSQL and MySQL Beyond technical power, I am a highly communicative and collaborative partner, committed to understanding your unique requirements and exceeding your expectations. Let's talk Odoo! Contact me to discuss your project and see how I can be your development partner.

  • Odoo
  • Python
  • Odoo Development
  • API Integration
  • RESTful API
  • ERP Software
  • CRM Software
  • Custom App
  • App Development
  • Web Application
Nitesh S.

Delhi, India

$50/hr
4.9
24 jobs

I help researchers transform complex biological data into reproducible analyses, publication-ready figures, and biologically meaningful conclusions. I am a Bioinformatics Analyst and Computational Biologist with 5+ years of combined academic, industry, and freelance research experience. I hold an MSc in Bioinformatics, have completed 15+ research projects, and have contributed to four peer-reviewed publications, including first- and co-first-author studies. My work spans cancer genomics, neurodegenerative diseases, immunology, microbiology, transcriptomics, proteomics, peptidomics, metabolomics, and multi-omics integration. Core services: ✔ RNA-seq and microarray analysis ✔ Data preprocessing, normalization, batch correction, and quality assessment ✔ Differential expression using limma, DESeq2, and edgeR ✔ GO, KEGG, Reactome, GSEA, GSVA, and pathway interpretation ✔ Immune-cell deconvolution and tumour-microenvironment analysis ✔ Survival analysis and clinical–molecular data integration ✔ Biomarker discovery and machine learning using LASSO, Random Forest, SVM-RFE, and feature selection ✔ WGCNA, PPI networks, and gene–pathway relationships ✔ Public-data analysis using GEO, TCGA, METABRIC, and other repositories ✔ Multi-cohort integration and transcriptomic meta-analysis ✔ Publication-ready figures, reproducible R scripts, reports, and manuscript support Recent work includes integrating TCGA primary tumours with a metastatic oesophageal-cancer cohort, molecular-subtype classification, batch-effect assessment, differential expression, immune deconvolution, pathway analysis, and survival modelling. I am also working on region-resolved ALS transcriptomics and microbiology-focused research. Technical toolkit: R, Python, Bioconductor, GEOquery, TCGAbiolinks, limma, DESeq2, edgeR, clusterProfiler, gProfiler2, GSVA, maftools, survival, survminer, ggplot2, ComplexHeatmap, and R Markdown. Why work with me? • Analysis designed around the biological question—not just tool execution • Clean, reproducible, and well-documented workflows • Careful validation and transparent reporting of limitations • Clear biological interpretation and publication-ready deliverables • Experience collaborating remotely with researchers from different disciplines If you have a biological dataset or research question, send me a brief description of your data and expected outcome. I can review its feasibility and recommend an appropriate analysis plan.

  • Python
  • Linear Regression
  • ggplot2
  • R
  • Machine Learning
  • Genomic Data Analysis
  • Biostatistics
  • Bioinformatics
  • Survival Analysis
  • Data Analytics
  • Data Analysis
  • Statistical Analysis
  • Spatial Analysis
  • GIS
Pancham G.

Bathinda, India

$30/hr
4.9
131 jobs

I’m a Senior Java Backend Engineer with over 14 years of experience building mission-critical systems in fintech, with a strong focus on payments, lending platforms, and core banking solutions. I specialize in Java and Spring Boot, and design backend systems that are secure, scalable, and capable of handling high-volume financial transactions with consistency and reliability. I’ve worked on systems involving payment processing, transaction workflows, loan management, and integrations with external financial services and APIs. This includes designing and building robust microservices architectures that support real-time and asynchronous processing, ensuring data accuracy, fault tolerance, and seamless service communication. I understand the importance of idempotency, transaction integrity, and failure handling in financial systems where even minor inconsistencies can have significant impact. Security and compliance are central to my approach. I have strong experience implementing secure authentication and authorization using Spring Security, token-based systems, and role-based access control. I build APIs and backend services that align with financial industry expectations around data protection, auditability, and reliability. From a technical standpoint, I bring deep expertise in Spring Boot, microservices, REST API design, JPA/Hibernate, and relational databases like MySQL and PostgreSQL. I’m comfortable designing systems from scratch as well as improving and scaling existing platforms, optimizing performance, and ensuring stability under load. I also have hands-on experience with AWS and Google Cloud, and have worked on deploying and managing backend systems in cloud environments. I understand how to design cloud-ready architectures, implement CI/CD pipelines, and ensure systems are resilient, observable, and production-ready. What sets me apart is my ability to think beyond just implementation. In fintech systems, correctness, reliability, and long-term maintainability matter more than quick fixes. I focus on building clean, well-structured systems that not only meet current requirements but are also prepared for future scale, regulatory needs, and product evolution. If you’re building or scaling a payments platform, lending system, or core banking backend and need someone who understands both the technical and domain challenges, I’d be glad to contribute.

  • Java
  • J2EE
  • Spring Framework
  • Spring Boot
  • Spring Security
  • Hibernate
  • Java Persistence API
  • RESTful API
  • Microservice
  • FinTech
  • Payment Processing
  • AI Implementation
  • SQL Programming
  • Desktop Application
  • Swing
  • iText
  • Unit Testing
  • Cloud Computing
  • Amazon Web Services
  • Google Cloud Platform
Deeksha V.

Ambala, India

$20/hr
4.8
293 jobs

🏆 𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 𝐏𝐋𝐔𝐒 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐈𝐧𝐝𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐭 𝐟𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 📞 𝘾𝙖𝙡𝙡 𝙣𝙤𝙬 𝙛𝙤𝙧 𝙖 𝙛𝙧𝙚𝙚 𝟑𝟎-𝙢𝙞𝙣𝙪𝙩𝙚 𝙘𝙤𝙣𝙨𝙪𝙡𝙩𝙖𝙩𝙞𝙤𝙣 🗓️ 𝙄𝙣𝙫𝙞𝙩𝙚 𝙢𝙚 𝙩𝙤 𝙮𝙤𝙪𝙧 𝙟𝙤𝙗, 𝙖𝙣𝙙 𝙄 𝙬𝙞𝙡𝙡 𝙨𝙘𝙝𝙚𝙙𝙪𝙡𝙚 𝙖 𝙘𝙤𝙣𝙫𝙚𝙣𝙞𝙚𝙣𝙩 𝙩𝙞𝙢𝙚 𝙛𝙤𝙧 𝙮𝙤𝙪𝙧 𝙘𝙤𝙣𝙨𝙪𝙡𝙩𝙖𝙩𝙞𝙤𝙣 ➤ 10+ years of experience in Shopify, Shopify Plus, Shopify Store Development, Shopify Store Designer, Shopify Theme development, Shopify Apps Development, Shopify Custom apps development, Shopify Public apps development, Liquid Coding and Shopify Storefront API and External API Integration ➤ Worked with more than 270+ Shopify projects. ► Completed 4700+ hours on Upwork. ➤ Good Written and Verbal English Skills 📅 Feel free to hit "𝐈𝐍𝐕𝐈𝐓𝐄" Button. Available to Start Immediately. 𝐌𝐲 𝐖𝐨𝐫𝐤 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬: ➤ Shopify | Shopify 2.0 | Shopify Plus | Shopify Partner | Shopify stores Design | Shopify Store Development | Shopify Apps | Liquid Coding | Shopify Templates ➤ Shopify App development from Scratch using NodeJS, React, Laravel, Yii Framework ➤ Setup Shopify Store with responsive designs and optimized websites for performance and user experience. ➤ Implemented custom features and configured various Shopify Apps for enhanced functionality ➤ Shopify Apps (Oberlo, Dsers, Dropified, Importify, Spocket, Eprolo, etc.) ➤ Expertise with Shopify Page Builder Apps (Shogun, PageFly, GemPages, etc. ) ➤ Shopify Store Design Using Figma, XD, Sketch and Photoshop. ➤ Shopify Custom Theme Design and Development (Free/Paid) ➤ Implemented custom features and functionality using Shopify's API and custom coding. ➤ Shopify Store Setup and Shopify Store Design ➤ Shopify Product template customization ➤ Custom checkout integration in Shopify ➤ Bold, and Recharge subscriptions. ➤ Shopify Store Management ➤ Shopify Store ongoing maintainance I'm available full-time (up to 40 hours per week) and dedicated to your projects. Hire me Today! So let's start the long-term business relationships :) 𝗥𝗲𝗹𝗮𝘁𝗲𝗱 𝗦𝗲𝗮𝗿𝗰𝗵: Deeksha Shopify Developers | Deeksha Shopify Designer | Shopify Templates Specialists | E-commerce Consultants | Ecommerce Website Development | Ecommerce Management Services & Solutions Shopify expert on Upwork. Shopify Developer Upwork. Shopify Designer Upwork Shopify Store set up Upwork. Shopify website development Upwork. Shopify Theme customization Upwork. #Shopify#ShopifyStoreDesigner#ShopifyonlinestoreDesigner#ShopifyEcommerceDesigner#ShopifyDeveloper#ShopifyDesigner #Ecommerce #WebDesign #CSS #HTML #ShopifyPlus #SEO #Dropshipping #FrontEndDevelopment #ResponsiveDesign #WebDesign #UIUX #WebDev #Shopifyexpertupwork #ShopifyDesigner #Shopify #Topratedplusdeveloper # ShopifyE-commercePlatform #ShopifyOnlinestore #ShopifyWebsiteDesign #ShopifyExpert #ShopifySpecialist #ShopifyAppDeveloper #Ecommerce #Dropshipping #FrontEndDevelopment #LandingPage #Shopifyexpertupwork #ShopifyPlus #Ecommercedeveloper 𝙍𝙚𝙜𝙖𝙧𝙙𝙨, @Deeksha #Shopify#ShopifyDesigner#ShopifyExpert #Shopifydeveloper #TopratedshopifyDesigner

  • Shopify
  • Shopify Website Design
  • Shopify Website Redesign
  • Shopify Theme
  • Ecommerce Website Development
  • Shopify SEO
  • Shopify Apps
  • Shopify Plus
  • Set Up Shopify Site
  • Shopify Development
  • Shopify Templates
  • Shopify Dropshipping
  • Website Redesign
  • Product Listings
  • Shopify Marketing
Prabhaakar B.

Bengaluru, India

$45/hr
4.5
1 jobs

Prabhaakar is a seasoned AI & Cloud Technology leader specializing in accelerating enterprise AI and cloud adoption, empowering clients to realize their full potential through advanced Cloud, AI, and Agentic AI solutions through successfully managing people and programs to drive transformative business outcomes. As a AI Cloud Practice Director, he has led large-scale global projects worth up to $100M, driving innovation across US, UK, LATAM, Europe, Australia, Middle East, and South Asia. 25+ years of experience that includes Product engineering, Practice development, Solution Architecture, Delivery management, Technical Program management, Presales, technology consulting and People management. Proven track record of managing multiple programs, directed towards strategic business objectives, by working with multiple stakeholders, managing large cross-functional global teams and partners positively impacting program and customer business outcomes and metrics. A digital transformation leader managing portfolio of customers to modernize their IT and products through AI and cloud product engineering initiatives. Specialization in Data and AI, Cloud, Agentic AI, and digital transformation projects, red project recovery, Agile transformation. Onsite experience in UK, US and Australia Soft skills: Negotiation for results, Analytical problem solving, Excellent verbal and written communication, Customer centricity, Passion for technology, Team player, Self critical, Accountability, Leadership

  • Agile Project Management
  • Project Plans
  • Business Analysis
  • Program Management
  • Business Planning & Strategy
  • Project Scheduling
  • Project Finance
  • Claude
  • AI Product Management
  • Technical Project Management
  • Cloud Computing

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