Hello, I am Ismael, a dedicated engineer MSc graduate from the Instituto Superior Técnico in Lisbon, always keen on learning more. Whilst I am Portuguese, I was raised in the French school system and as such I grew accustomed to a multicultural and international environment that allowed me to learn and speak 4 languages fluently. My professional and academic experience along with my internships developed both my ability to learn autonomously and to work as a part of a team, while also enhancing my critical thinking. A few years ago, I rediscovered a passion for software engineering that has allowed me to reinvent myself and I am looking for an opportunity to put my skills to use in order to grow professionally and to broaden my horizon.

Senior software developer with more than a decade of experience in Health Care and Financial Services IT. 2 + years with Power BI/Excel 15 + years coding experience with Oracle/SQL Server. 15 + years with a variety of front-ends (Delphi/C#/.NET/Javascript) and middleware (Java/PHP). Worked as a remote developer for the last 10 years. Speak and write fluent English. Excellent communication skills. Thought of as a can-do person, hard-working and a person of unquestionable integrity.

Clients work with me when they need someone who understands both engineering depth and business impact and can design systems that scale, stay stable and reduce operational overhead. I’m a Solutions Architect, Data Engineer and Backend Developer with 14+ years of experience building scalable data platforms and production grade backend systems for Ecommerce, Fintech, SaaS and Healthcare companies. I help businesses solve complex data and backend problems by designing systems that are reliable, secure and built for real world scale. From data ingestion to APIs and cloud deployment, I focus on clean architecture, automation and long term maintainability rather than quick fixes. My core expertise covers end-to-end data pipelines, backend services and cloud infrastructure using Python, Java, SQL and modern cloud platforms. I design ETL workflows, APIs and distributed systems that handle high volume data, background processing and integrations with confidence. On the data side, I build automated pipelines that extract, clean, validate and deliver analytics-ready data to warehouses, dashboards and APIs. On the backend side, I design API first systems, microservices and integrations that power products reliably under load. What I work on: • Data Engineering & ETL Pipelines (Python, Pandas, PySpark, SQL) • Backend Development & APIs (Python, Java, FastAPI, Django, Flask) • Cloud Architecture & Deployments (AWS, GCP, Azure) • Data Warehousing & Analytics (Redshift, BigQuery, Snowflake) • Workflow Orchestration & Automation (Apache Airflow) • Web Scraping & Data Extraction (Scrapy, Selenium, APIs) • Distributed Systems, Async Processing & Messaging • Database Design & Performance Optimization • Docker, Kubernetes, CI/CD and production deployments If you’re looking for a senior engineer who can own data pipelines, backend architecture and cloud infrastructure end to end, let’s talk.

If your data pipelines are slow, breaking, or just not delivering what the business needs — that's the problem I fix. I'm a Senior Data Engineering Consultant with 10+ years of enterprise delivery across telecom, banking, retail, manufacturing, and fintech. I've built and led data platform projects for clients like Philip Morris International, British American Tobacco, UBL, Etisalat, and Talbots — handling everything from raw ingestion to business-ready analytics. What I deliver: — Cloud data platforms on Azure (ADF, Databricks, Synapse) and Snowflake — End-to-end ETL/ELT pipelines using Informatica, Airflow, and Python — Data warehouse design, data modeling, and Data Vault architecture — BI reporting and analytics layers (Power BI, SQL) — Legacy system modernization and cloud migration — Data governance, lineage, and quality frameworks I run sudoTrek, a data engineering agency with a team of specialists, which means I can take on larger scopes when needed — not just individual tasks. I work with mid-size to enterprise clients who need someone who understands both the technical depth and the business outcome. I don't just build pipelines — I make sure the data actually serves the people using it. Available for long-term contracts and complex projects. Minimum engagement: $10K. Let's talk about your data challenge.

👉 Successfully generated over $1M💰in project revenue, working with 100+ satisfied clients 🌟 and earning an average 5-star rating. I pride myself on delivering results with a 95% on-time completion rate ⏱️, ensuring high-quality outcomes and client satisfaction at every step. ✅Tech Skillset: • Main Languages: Python, JavaScript/TypeScript. • Frameworks/Technologies: Django, Flask, FastAPI, React, Next.js, Express.js, Node.js, Prisma, React Native, Docker, Selenium, Pydoll. • Cloud: AWS, GCP (Google Cloud), DigitalOcean, Kubernetes. • Databases: Experienced with PostgreSQL, MongoDB, Firebase, and MySQL. • AI: PyTorch, HuggingFace, OpenCV, Spacy, Scikit-learn, Pandas • Other: SEO, Copywriter, Figma, Photoshop, Zapier ✅Biggest accomplishment: From A to Z, I managed to turn an idea into a commercialized product with 10 000 monthly active users, handling the direction for the marketing/sales and engineering on my own. Check out uNotes on my portfolio for more details or check the app at unotes.net ✅Soft Skills: • Patience and always love to keep things positive with good energy (no, seriously, I love giving great experiences to anybody who works with me) • Product Ownership (working in startups + building my startup + the years of developing experience helps me understand user interactions with a product) • Sales (managed to close high ticket items of over 10K+ a month) • Designer intuition (for example, notice how everything but the portfolios on my profile use green colors to match the Upwork aesthetic; these details can go a long way when making a product!) ✅Interests / Hobbies: • Retro Video Games • Soccer & Volleyball • Social Gatherings • Video & Music Editing • Working Out • YouTube Content Creator

🚀 I build high-performance C++/.Net software solutions customized for Web, Desktop, and Office Add-in applications. ✅ With 💯% positive feedback, 🌟9000+ hours, and 🌟30+ challenging projects successfully completed on Upwork - plus numerous projects delivered previously - I bring over 22 years of software development experience to every project. Whether you're developing sophisticated web applications, powerful desktop software, advanced Office add-ins (VSTO, Office JS API, OpenXML), or specialized software for CAD and 3D-printing systems, I consistently deliver solutions tailored precisely to your business needs. ⏰ Flexible to work within U.S. or European business hours, ensuring smooth collaboration and communication. Core expertise: ⚡ High-Performance & Real-Time Systems: Custom solutions for latency-sensitive applications and complex data pipelines. Performance optimization, multi-threaded and asynchronous code, Boost/Boost.Asio for high-efficiency networking. 📈 Trading & Finance Systems. Expertise with Rithmic C++ SDK (R | API C++), FIX protocol, real-time market data processing, and order execution for high-frequency and medium-frequency trading. 🔐 Cybersecurity. Designing and developing secure architectures, threat-detection systems, public-key infrastructures (PKI), secure license servers, encryption libraries, and secure communication protocols. 🌐 Full-Stack Web Development: React, ASP.NET Core, RESTful APIs, PostgreSQL, Redis, MongoDB, WebSockets, Azure, AWS. Skilled in integrating third-party APIs and building scalable backend infrastructure. ⚙️ Advanced C++ & C# Engineering: System-level development, cross-platform libraries, SDKs, and Office automation. Proficient in building stable, secure, and efficient codebases. 🌐 Cross-Platform & Windows-Specific Platform Development Experience building cross-platform C++ / .net core, Windows-specific solutions using WinAPI, ATL, Cloud Sync Engines 🖥️ Desktop Applications: WPF, WinForms, MFC, ATL and modernization of legacy Windows applications. 📎 Office Add-ins: VSTO, Office JavaScript API, and deep OpenXML integrations for document processing and automation. 📐 CAD & 3D-Printing Software: Plugins and custom tools for CAD and additive manufacturing workflows. ☁️ Cloud Platforms: Deployment and integration with AWS and Azure, including containerized and serverless environments. 💻 Languages: C++, C#, JavaScript/Typescript, Python 🔄 Modernization: Transforming legacy systems into scalable, maintainable modern solutions. 🌟 Check out my client feedback - it speaks even louder than my introduction. Let's discuss your Web, Desktop, Office Add-in, or specialized CAD/3D-printing software needs - I'm ready to help you!

1% Top Rated software engineer on Upwork, 5+ years of building complex systems from scratch and shipping software for companies like ABB, Telekom and various institutes. Startups and businesses hire me to design, build, and launch real products, not prototypes, that are ready to grow, scale smoothly, and meet professional standards from day one. Expertise: MVP Development (idea to production) Dashboards, workflows, secure portals, state-driven components, edge functions Postgres schema design, RLS policies, authentication, storage, triggers, pgvector for AI-ready features Taking MVPs to the next level with more robust architectures, including cloud-based backends (AWS) when products outgrow early-stage setups SaaS platforms, client portals, marketplaces, and internal tools Automation, n8n workflows, API integrations, webhooks, async jobs, and resilient pipelines AI integration, chatbots, RAG I don’t over-engineer, I don't sit on calls all day and I don’t waste time - I build software that’s fast, maintainable, and lasts - and I make sure it stays that way. If you are looking for a partner to design, build, and evolve your next MVP or web application, let’s connect.

Hi, I'm Valerie — I build AI-powered web applications and production-grade AI systems for businesses that need more than a chatbot wrapper. What I deliver: RAG pipelines over structured and unstructured data, multi-agent orchestration with tool calling, and tiered LLM architectures that balance cost with quality. I've shipped real-time AI collaboration platforms, enterprise AI agents layered on legacy databases, and full-stack web applications serving thousands of users. My stack spans the full product lifecycle. On the frontend: React, Next.js, TypeScript, Tailwind CSS. On the backend: Node.js, Python, PHP, Java, REST APIs. On the AI layer: LangChain, LangGraph, OpenAI, vector databases (ChromaDB, Pinecone), embeddings, and semantic search. I build with observability in mind — every AI pipeline I ship is instrumented for latency, cost, and output quality. Where I'm especially useful: if you have a legacy FileMaker system and need to modernize it or layer AI capabilities on top of it, that's exactly what I specialize in. I'm a Claris FileMaker Certified Developer with years of experience building custom FileMaker solutions, Data API integrations, and migration paths to modern web stacks. I also hold a Tableau Desktop Specialist certification for data visualization work. I've completed an intensive AI Engineering Fellowship at Gauntlet AI, where I shipped production-grade RAG systems and multi-agent workflows in enterprise environments. I bring 7+ years of full-stack development experience and 1,000+ hours of AI-first development practice. What working with me looks like: fast communication, rapid prototyping (I regularly go from concept to working MVP in under a week), clean handoffs, and code that's built to maintain — not just to demo.

Expert in relational database systems, especially PostgreSQL (Supabase, Amazon Aurora/RDS, Azure Hyperscale/CosmosDB/Citus, postgREST, RPC, RLS, timescaledb, PostGIS), MS SQL Server, and MySQL, with more than 27 years of experience as a database architect, designer, developer, and administrator. I’m also a software developer with 37 years of experience in many platforms, programming languages, and database systems. Expert in all of the following: * database installation, configuration, optimisation, securitisation, backups, performance improvement, encryption. * database design, SQL code optimisation, indices optimisation, coding stored procedures, increasing performance and security, partitioning. * data quality, de-duplication, normalisation, AI-assisted enrichment. * single and multi-tenant systems, JWT authentication, RLS authorisation. * REST and RPC functions, Edge/Lambda functions, Webhooks, AI APIs, Realtime, migrations. * database conversion or migration (e.g. to/from noSQL or JSON stores), interfacing with other databases, importing and exporting data, interfacing with online services (pl/perl, C, C#) * hot/cold backup and restore, recovery, replication (master/slave or master/master), mission critical * encryption in transit and/or at rest; encryption of data for authorised access only * text-file data extraction, formatting, conversion, archival, clean-up. Databases: PostgreSQL, SQL Server, MySQL, D3/Pick, Oracle, NexusDB, DB2, SQLite, COBOL, MongoDB, BerkeleyDB, Informix, Access, InterBase, Paradox, DBase/Clipper/Fox (DBF), CSV and plain text. Expertise with UAT/development/test environments, Regular Expressions (regex), batch and shell scripting, sed and other text processing tools, Excel, SOAP and web services, networking tools, and many programming languages (including Delphi, C/C++/C#, Perl, PHP, Smalltalk, Java, JavaScript, Python, and more). I can provide training and consultancy.

Jyoti Here, I’m an Excel automation specialist with extensive experience in developing robust VBA solutions to streamline business operations. Over the years, I’ve automated complex workflows for clients across Banking, Capital Markets, Real Estate, Insurance, Logistics, and Retail sectors in the USA, UK, Canada, and India. Whether it’s building custom dashboards, automating reports, integrating Excel with other systems, or simplifying repetitive tasks, I deliver scalable and efficient solutions tailored to each business need. Let’s automate your workflow and save hours of manual effort! My expertise:  Excel Data Analysis  Bulky and Multiple File Processing with VBA Script  Automation of existing or new System using Excel VBA/ Macro Script  Dynamic Dashboards, Charts  Sending Email's with PDF attachment using Excel VBA  Advance Excel Trainer  Microsoft Power BI Dashboards,Reports  Data conversion,file merging with PowerQuery. Of course, I can help with complicated formula, conditional formatting rule, drop-down lists, Pivot table, macro, Power Query, Power Pivot, MS-Access Database, and Forms. I can troubleshoot any Excel file, fixing issues like broken formulas, heavy file size, locked sheets, buggy or slow VBA code. Key highlights about my Project :  Delivering cost effective and 100% quality product to the client  On time delivering Project  Through Testing with different scenarios of data  I provide free support to clients to train them initially as well free support for any issues with my work.  I document and clarify all project requirements and Testing scenarios with clients before starting the project. These documents can be used by clients for quick reference.  Quick Responsive to client’s queries. I believe in maintaining long term project relationship with Clients.