Supabase and PostgreSQL backends for businesses that run on them. Row level security, migrations, approval chains, audit trails. Shopify Liquid and B2B ordering. Email infrastructure that reaches the inbox. WHAT I BUILD • Supabase and Postgres backends. Schema design, 116 migrations on one live system, row level security tight enough that one role cannot see another's costs • Internal operations software. Quotations with a multi-step approval chain, invoicing, a stock ledger over 738 migrated raw materials, purchase approvals, HR attendance • Shopify. 3 storefronts, 212 Liquid templates, a B2B ordering page with a working cart, 109 products migrated, SEO and performance work • B2B marketplace, end to end. RFQ to quote to order, 616 source files, 5 edge functions covering web push, notification delivery and event logging • Telephony. An on-premise Grandstream UCM PBX bridged over a permanent named Cloudflare tunnel, so staff dial from the record they are looking at and every call logs against it, with no public port exposed • Email infrastructure. SPF, DKIM and DMARC across 5 sending domains, warm-up, verified lists, suppression and scheduling THE FAILURES I HAVE ACTUALLY FIXED Stack lists are cheap. These are not. • A domain-wide "550 5.7.1 email spoofing detected" rejection, caused by a DMARC record left behind by a decommissioned ESP sitting alongside live DKIM keys for three separate tools, none of them the real sender • Microsoft Defender Safe Links detonating single-use login links from an Azure range before any human clicked. Microsoft 365 only, invisible on Gmail. Fixed by consuming the token on a POST rather than a state-changing GET, which scanners do not follow • Gmail rewriting the From address on mail that had already gone out, because a Workspace alias is not a verified send-as • A DMARC ramp from none to quarantine that filtered forgeries without breaking one legitimate stream HOW I WORK I write the tooling rather than configuring someone else's. The DNS audit tool I run on every engagement checks SPF including the 10-lookup limit counted through nested includes, DKIM across 40+ selectors including stale keys, DMARC policy and alignment, MX, MTA-STS and TLS. Scored out of 100, every finding ranked, with the exact fix. The source is public on the GitHub account linked to this profile. Run it against your domain before you hire me. Fixed price with defined milestones is what I prefer. I name timelines before money changes hands, including the ones you will not like: mailbox warm-up takes two to three weeks and cannot be shortened. Dubai, working US hours. English and Arabic. FIRST STEP Send me your Supabase project, your Shopify theme or your sending domain, and the one thing that is broken. I will tell you what I think is wrong and what I would fix first, before you hire anyone.

🍀 Dear Clients, After years of working as a senior software developer in a top tech company, I decided to follow my dreams, become Data Engineer, and started working as a freelancer. My 8+ years of work experience is in the cloud industry, automation, software development, web applications, and mobile app development. I have worked with solo entrepreneurs, startups, small businesses to Fortune 500 companies. 🔥 In time I become one of the first choices in the industry with over. This year I passed 30,000 working hours and 250+ clients and decided to join Upwork.com to network with new clients and challenging opportunities. 🤘 I start with establishing good communication with my clients, understanding their needs and requirements of the projects, suggest the most affordable and wisest solution, then implement it. There's nothing I can't do as long as instructions are given clearly. “Without continual growth and progress, such words as improvement, achievement, and success have no meaning.“ ​–​ Benjamin Franklin ----- 🚀 CERTIFICATES ----- - AWS Certified Solutions Architect – Associate (SAA-C02) - AWS Certified Cloud Practitioner (CLF-C01) - Google Certified Cloud Fundamentals: Core Infrastructure - Cisco Certified CCNA Routing and Switching Connecting Networks - Cisco Certified CCNA R&S Scaling Networks - Cisco Certified CCNA Security Program - Cisco Certified CCNA R&S Routing and Switching Essentials - Linux Summer Camp 2016 – Linux System Management - Cisco Networking Academy Certified Internet of Everything (IoT) - Cisco Certified Introduction to Cyber Security - Cisco Certified CCNA Introduction to Networks ----- ⭐️ HIRE ME ----- “Perfection is not attainable. But if we chase perfection, we can catch excellence.“ ​–​ Vince Lombardi If you need a helping hand or want to learn more please don't hesitate to send me a message or INVITE ME to the job! ----- 🚀 BONUS ----- 1 Month of FREE maintenance for every project. Help you to deploy and configure the applications. Also, detailed documentation with a video guide if you need it. ----- 🙏 CLIENT FEEDBACKS ----- ✌️ "He is a true professional and one of the most motivated freelancers I have ever worked with." ✅ "Burak always solves problems with a creative flair. He delivered quality work and There's nothing he can't do." 🤙 "The finished project was brilliant. If you have an opportunity to work with Burak, go for it!" ⭐️ "With same-day delivery and superb communication he has become our favorite developer to work with. You'll not regret investing in Burak." ----- ⭐️ SKILLS ----- 🥳 SOFT SKILLS - Autonomy, trustworthiness, polymath, teamwork, time management, quick adaptation to complex situations, fast learner, hardcore work ethic. 💬 LANGUAGES - English (Advanced), Turkish (Native) 🖋 LANGUAGES - Python, JavaScript, Go, Java, C++, Bash, Linux, MATLAB, JSX, YAML, SQL 📦 CLOUD DEPLOYMENT Amazon Web Services (AWS), Google Cloud (GCP), Azure, Kubernetes, Docker, Terraform, CI/CD, DevOps, Lambda, Heroku, DigitalOcean, Jenkins, 🛠 TOOLS - GIT, GitHub, VS Code, SublimeText, iTerm, Trello, Jira, MS Office, Google Workspace, Notion 🗃 DATABASE - MySQL, PostgreSQL, MongoDB, Amazon Aurora, DynamoDB, Bigtable, SQLite, MS SQL 🕸 NETWORK - TCP/IP, VPC, VPN, DNS, DHCP, TLS, BGP, UDP, SFTP, HTTP, APIs, REST, ETL 🦾 MACHINE LEARNING - Neural Networks (LSTM, RNN), Regression, Sklearn, Keras, TensorFlow, Jupyter Notebook ₿ CRYPTOCURRENCY APIs - Coinbase, Kraken, Binance, Electrum Wallet, Bitcoin Core 📱 APP DEVELOPMENT - React Native (iOS/Android), Java (Android) 🔫 WEB FRAMEWORKS - Flask, Django, Ruby 🌎 WEB SCRAPING - Selenium, BeautifulSoup, Scrapy, LXML, Email 💃 SOCIAL BOTS/APIs - Instagram, Twitter, Slack, Telegram, Facebook 💵 TRADE APIs - WeBull, Robinhood 🧠 AND MORE Still learning... ----- ⭐️ LIMITLESS ----- 🚀 Hire me, outsource, and focus on the real business. 🤝 If you need a helping hand or want to learn more please don't hesitate to send me a message or INVITE ME to the job!

Experienced servant leader with a proven track record of devising and implementing strategic teamwork solutions that foster communication and collaboration. Accomplished at introducing and facilitating the adoption of Scrum principles, removing impediments and fostering self-organization. Results-oriented, decisive leader with proven success in establishing and cultivating relationships to build team focus and flexibility. Excellent communicator and innovative problem solver with strong strategic development and organizing capabilities. Skill Set: •Exceptional skills in gathering, analyzing, and translating business requirements into functional specs that were used to design and implement business solutions. •Business Analysis, Team Facilitation, Scrum Methodology. •Proficient in facilitating Scrum ceremonies (Daily scrum, Sprint Planning, Sprint Review and Sprint retrospectives) and leading agile projects. •Coached teams on Agile values and principles to promote continuous improvement, accountability, and transparency in practices and artifacts. •Servant leader and liaison to upper management. •Removed impediments, Used effective communication to achieve a goal, Coordinated among stakeholders. •Empowered teams to self-organize and grow cross-functionality. •Worked closely with product owner in backlog management and continuous delivery of features. •Protected development team from outside distractions, impediments or team conflicts, and maintain focus on product backlog and project timeline. •Experience in QA methodologies like Waterfall and Agile Methodologies... •Expertise in Data Migration... •Expertise in Web Hosting... •Executing testing procedures to ensure that Software & Data Migration meets established quality standards. •Troubleshoot and investigate defects for in-house software applications. •Develop and implement test plans for functional application areas and document testing failures. •Certify quality level of applications from functional and regression testing perspective. •Record software defects with bug tracking system and report defects to software developers. •Determine, analyze and record problems with program function, output, online screen or content. •Create a test strategy on project requirements and schedule. •Inform defects found in testing using standard defect tracking tools. •Inform test progress against schedules. •Interact with development, project management and customer stakeholders. •Conduct new functionality and regression tests, determine and report issues for follow-up. •Prepares Data Set for Migration from non-prod to prod. •Prepares Data sets for test logic, error handling and system workflows. •Finding bugs, reproduce and track defects. •Verifies fixes. •Document testing according to required procedures. •Familiarity with development cycle and quality assurance methodologies. •Training new team members with the testing procedures and standards of the software. •Assigning tasks to the team, Monitoring the team work, Reporting progress to the Managers. Skills: Regression Testing Functional Testing Integration Testing Database Testing Adhoc Testing Usability Testing Agile Methodologies Data Migration Microsoft Office Microsoft Excel Project Management Basecamp Trello Slack Jira HTML CSS Basic Python Programming SQL SCRUM Framework Data Migration Web Hosting Data Analysis Tableau Power Apps Power Pages Power Automate Power BI

Creator of nano RTOS and httpstorm.com I am a creative person who likes discovering new technologies and designing solutions to interesting problems. I do need some background to understand any unfamiliar subjects, after that a good solution in only a matter of time. C, C++, Assembly for ARM, Embedded Kernel, JavaScript, HTML5, SwiftUI, bash.

✦ IT Consultant ✦ Product Development ✦ Software Development ✦ Full Stack Development ✦ Prompt Engineering ✦ Project Management ✦17+ Years Exp ❖ Engagement with DMRC (Feb 2021 - Present) Spearheading cutting-edge engagement strategies at DMRC, driving innovative solutions in alignment with company objectives. Collaborating seamlessly with cross-functional teams to define and execute strategies that enhance business operations and productivity. ❖ Leading UI architecture development, ensuring visually appealing and user-friendly interfaces. Collaborating closely with the DMRC team to translate business requirements into effective solutions. Leveraging expertise in ASP.NET MVC 4, jQuery, C#, HTML, CSS, and JavaScript to drive project success. ❖ Upwork Engagements (Oct 2015 - Present): Serving a diverse range of clients on Upwork, delivering top-tier solutions. Skillfully handling ASP.NET and Azure deployment projects, demonstrating proficiency in diverse technologies. ❖ Garnering stellar client feedback on Upwork, reflecting exceptional performance and dedication to meeting diverse project requirements. Demonstrating prowess as a problem solver by providing rapid and professional solutions to complex technical challenges. Earning a reputation for excellence in communication and exceeding client expectations across diverse projects and domains. ❖ JF Software (Nov 2021 - Jan 2023): Excelled in technically challenging projects, demonstrating agility in evolving requirements. Led the charge in working with advanced technologies, including GraphQL, Azure Functions, Cosmos DB, and Azure DevOps. Delivered impeccable C# code and collaborated effectively with cross-functional teams, contributing insights during stand-ups, sprint planning, and other key meetings. ❖ LetsBrief Journey (Oct 2015 - Nov 2019) Project Title: Innovative Customer Engagement Platform: Led the development of a groundbreaking customer engagement platform, spanning mobile and desktop, while designing user-friendly UI frameworks. 𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭𝐬 ASP.Net MVC, ASP.Net, C#, CSS, HTML, Ajax, Azure, React.js, JavaScript, jQuery, ChatGPT, Cognitive Search, Prompt Engineering, 𝐒𝐞𝐜𝐨𝐧𝐝𝐚𝐫𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭𝐬 SQL Server, Jenkins, Fortify (SAST), terraform, Vue.js, Rethink DB, LINQ, LINQ to SQL, Entity Framework, WCF, node.js, socket.io, ES6, CI/CD, Terraform, AWS, Infrastructure automation, DevOps, Shapespark 𝐀𝐥𝐬𝐨 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 JSON, SQL Server, Azure (Azure Web App, Azure VM, Azure Blob, Azure Notification Hub, Azure Web Jobs, Azure CDN, azure Ubuntu VM etc.), Android studio, Firebase Cloud Messaging, Web Components, notification API, Facebook Graph Api, worker role, LESS, Responsive Design, Phone gap/Cordova, Phone gap Build, Gulp, Browserify, Framework7, Raven DB, Pop3 & IMAP integration

React native mobile app development expert. Experienced in iOS and Android app development and store submission.

⭐ Top Rated Plus, part of the best 3% experts on Upwork Currently based in Tallinn, Estonia, the #1 country in the EU in the number of startup unicorns per capita A successful leader of high-tech teams and products with different technical stacks and backgrounds, the focus areas of his recent projects include Internet-of-Things, Artificial Intelligence, and Financial Technology.

I am a developer with over 20 years programming experience in various languages and architectures. I love solving unique and complex problems. Languages: C/C++, C# JavaScript, Typescript, HTML, CSS Python Ruby Web UI Frameworks: React, Vue.JS, Angular Web Backend: Node.JS, ASP.NET, NestJS, NextJS, NuxtJS Databases: MySQL, PostgreSQL, Oracle, Mongo OS: Unix, Linux, MacOS, Windows

“If I don’t deliver, you don’t pay — it’s that simple.” From soldering my first circuit board at 11, to coding robots in Boston, to building a Rust-powered crypto trading agent that executes Bitcoin trades in 0.33 seconds — I’ve always been obsessed with figuring things out and making them work better, faster, and at scale. My path hasn’t been traditional: I built businesses to study marketing psychology and consumer behavior, researched AI & machine learning at Rowan University, launched startups like BlenderBin, and worked with industry leaders like Tata Technologies and AstraZeneca. Today, I merge technical execution with business strategy to create software, scalable systems, and products that perform in the real world. I don’t just write code — I provide a transparent process and outcomes that clients can see and trust. 🛠️ How I Work (Process & Deliverables) ✅ Notion checklists so you can track progress in real time 📊 Lucidchart diagrams mapping functionality and workflows before code is written 🔗 GitHub-linked updates for every commit and change 🛠️ Demo-ready milestones — test features as they’re created 📅 Clear timelines with no surprises, delays, or excuses 🚀 What Makes Me Different ⚡ 1–2 Week MVP Turnaround — if it’s not delivered on time, you get a full refund 🔒 100% Warranty — all bugs & errors fixed free of charge ♾️ Unlimited Revisions until you’re 100% satisfied 🌐 Free Hosting Setup (AWS, Vercel, Firebase, etc.) — no hidden fees 🖌️ Branding & SEO Starter Package — logo, colors, typography, + SEO setup 💰 Loyalty & Referral Rewards — 10% off future projects + 15% cash for every referral 💳 Access to My Startup Accelerator & Investor Network — we don’t stop until you’re funded 📈 Performance Guarantee — if your product doesn’t gain traction, you get your money back ✅ Bottom Line I don’t compete by being the cheapest. I compete by being the one who delivers results — faster, higher quality, and with zero risk. If there’s a vision, I’ll build it. If there’s a challenge, I’ll solve it. No excuses. Just results. LinkedIn: linkedin.com/in/kevinvicentevera

I build software for healthcare and pharmacy operations. I currently serve as CTO of a compounding pharmacy group, where I built and run the platform handling operations, compliance, and integrations across multiple locations. What I build: • HIPAA-compliant healthcare applications, AWS, PostgreSQL, encryption, audit trails • AI and LLM integration. Claude API, RAG systems, document intelligence, workflow automation • Pharmacy and healthcare system integrations LifeFile, shipping APIs, PMS and EHR connections • Full-stack web and native iOS Next.js, TypeScript, Swift Who I work best with: healthcare companies, pharmacies, and telehealth operators who need software built by someone who already speaks the language.