Hire the Best XSLT Specialists
in the United Kingdom

Specialist SAP ABAP developer with 30+ years in IT and 10+ years of hands-on ABAP, HANA, and integration development — backed by 15+ end-to-end SAP implementations across FI/CO/MM/SD/PP/PS as a project consultant. $50K+ earned on Upwork across 9 jobs, 100% Job Success. Recently helped clients: Tested EDI processing with simulated inbound XML messages Automated data loading to legacy 3rd-party applications using Power Automate Built a POC activating OAuth2 for the SAP API Pinpointed and resolved SAP HANA Calculation View performance bottlenecks Reduced MySQL query performance to sub-second across 10M+ records Skills: SAP ERP (FI/CO/SD/MM/PP/PS), ABAP (Reports, SAPScript, Smart Forms, BAPI, User Exits, LSMW, IDoc), SAP HANA (Attribute/Analytic/Calculation Views), SAP BASIS, BO, Power BI/Power Query, MSSQL, MySQL, Power Automate. I stay hands-on with SAP HANA and ABAP development between engagements, and I'm applying AI-agent automation (n8n, Ollama) to speed up delivery. Earlier in my career, I led 15+ end-to-end SAP implementations as a project consultant, from proof-of-concept through go-live, following the ASAP methodology. Available for remote contract work globally, aligned to UK, Hong Kong, or other regional hours.

I help businesses streamline their operations by automating manual processes, connecting systems, and building reliable data workflows. With 10+ years of experience across content management, scripting, and no/low-code platforms, I’ve delivered 70+ successful projects on Upwork — from building Airtable CRMs to designing end-to-end automation pipelines that save teams hours every week. Clients hire me to: - Design and optimise Airtable databases - Automate workflows using Make, Zapier, and Pipedream - Build custom scripts and web apps with Google Apps Script & JavaScript - Integrate APIs and handle complex data transformations (XML/XSLT) - Format, convert, and typeset content for MS Word, Google Docs, EPUB, MOBI, and InDesign Whether you need a quick integration, a complex automation strategy, or polished content formatting, I focus on building solutions that are efficient, scalable, and tailored to your business.

As a .NET developer, I am a skilled software developer who specializes in creating applications using the Microsoft .NET Core. I have a strong understanding of programming concepts and are proficient in languages like C#. My primary role is to design, develop, and maintain applications using the .NET framework. This involves working with various tools and technologies to build desktop, web that run on Windows operating systems and other platforms. I am also adept at working with different software development methodologies such as Agile or Scrum and are able to work collaboratively with other team members, including project managers, designers, and other developers. 🔥 What I specialize in: C# / VB.NET Desktop Application Development (WinForms, DevExpress) SQL Server performance tuning & query optimization ERP & Accounting Systems (Inventory, GST, Reporting) QuickBooks Desktop Integration (QB SDK, automation, sync) Fixing slow applications caused by database or code issues Excel/VBA → .NET Application or DLL Conversion API integrations & system synchronization Auto-updaters (Application + Database migration) Industrial systems (Serial Port, Bluetooth, real-time control) 💡 Proven real-world experience: ✔ Inventory & Billing Systems with DevExpress ✔ Custom CRM & HRM Solutions (Multi-User) ✔ Financial Dashboards with Real-Time Charts ✔ Booking & Scheduling Tools with Reminders ✔ Secure Login & Licensing Applications ✔ ERP system for diamond industry (high-volume transactions) ✔ Optimized SQL performance for business-critical systems ✔ QuickBooks automated order & invoice sync ✔ Bulk email automation system (Google API integration) ✔ Excel VBA converted to scalable VB.NET DLL ✔ API-based auto-update system with database upgrades ✅ Technical Expertise ✔ Languages & Frameworks: C#.NET, VB.NET, WinForms, Desktop Application, .NET Framework, .NET Core ✔ UI Frameworks: DevExpress, Custom Controls ✔ Backend Logic: Complex Business Rules, Data Processing, API Integrations ✔ Databases: SQL Server (Advanced) - [Stored Procedures, Functions, Triggers, Query Optimization, Performance Tuning, Indexing & Execution Plans], Oracle Database, MS Access, Database Design & Architecture, Data Migration & Integration ✔ Extras: Reporting, Printing, Multi-language Apps, Licensing Systems, Crystal Reports / RDLC Reporting, Git Version Control ⚡ Why clients hire me: ✔ 14+ years of strong industry experience ✔ Expert in C#, .NET, and enterprise application development ✔ Strong database optimization and performance tuning skills ✔ Experience in SQL Server, Oracle, and MS Access ✔ Strong experience with real-world business systems (ERP) ✔ I quickly identify performance bottlenecks and fix them ✔ Focus on speed, stability, and long-term scalability

I have been the Technical Director of Mapsoft, an Adobe Business Partner since 1991. I developed the first PDF export that was part of Aldus/Adobe PageMaker versions 5 to 7. I now lead the team of Adobe Specialist Developers at Mapsoft. I am an Experienced Software Developer myself and Project Manager with Technical Sales experience. I am a Fellow of the Institution of Analysts and Programmers in the UK (FIAP). My company is an Adobe Business Partner, A Microsoft Partner and a member of the PDF Association. Skills: C++, C#, XML, PDF, SQL, JavaScript, ExtendScript, HTML, CSS.

I build an auditable document-processing layer that converts real, messy, unstructured data into structured data and makes your RAG system actually work. My longest engagement ran two years on retainer — a water consultancy processing lab reports across 10+ changing layout variations, where I cut manual data entry by 75%. Based in the UK. Most clients find me after something that was partly working stops working. The extraction script handled 80% of documents fine, then broke on the rest and the team can't explain why. That's the failure mode I'm specifically set up to prevent. ──────────────────────────────────────── HOW I WORK My job is to know the failure modes before we write the first line of code. I start with the simplest approach and iterate from there. Over-engineering is the most common failure mode in document processing — reaching for LLMs when regex would do, or building custom infrastructure when a single API call would do. My pipeline development follows the same sequence every time: 1. Define the schema first If I can't describe what clean output looks like, extraction will always be unreliable. Pydantic schema before touching any document. 2. Establish a regex baseline A deterministic check tells me exactly where the hard cases are before introducing any probabilistic tool. 3. Introduce LLMs incrementally Start with the simplest prompt possible. Iterate against real documents. If a simpler rule-based approach gets you 90% of the way, I'll say so — and we'll skip the LLM. 4. Apply layout detection last Only where variation genuinely requires it. This sequence keeps pipelines predictable, testable, debuggable, and maintainable. The system that breaks on document 47 with no explanation is the most common complaint I hear from clients who've tried other solutions first. ──────────────────────────────────────── WHAT CLIENTS SAY "Thanks to Subhajit's work, we are saving countless hours having to manually enter results into our own template." "Subhajit's professionalism, meticulous attention to detail, and expert handling of our project were apparent from the outset." "He always delivers great results. His communication is clear, he takes feedback well, and he consistently finds effective solutions." ──────────────────────────────────────── WHAT I DO IDP Diagnostic & Action Plan — fixed price If your document pipeline is failing or underperforming, I audit your current approach, identify failure points, and deliver a written action plan with execution steps. Implementation is optional and available on request. Document Extraction Pipeline I build systems that extract structured data from PDFs, invoices, lab reports, contracts, and email attachments. They handle layout variation and format drift — the things that break simpler solutions in production. System Integration & Ongoing Support I connect extraction pipelines to downstream systems: Excel, databases, APIs, and internal tools. Retainer support is available as your document types evolve. ──────────────────────────────────────── RESULTS - Cut manual data entry by 75% for a water consultancy processing lab reports across 10+ changing layout variations - Maintained and expanded over a two-year retainer — the system became central to the client's daily operations - Extended the pipeline to process email attachments directly, removing a manual download-and-upload step ──────────────────────────────────────── TECHNICAL STACK Document Processing: pdfplumber, PyMuPDF LLMs & Extraction: OpenAI API (GPT-4o-mini) Validation & Structure: Pydantic, JSON schema Backend & APIs: FastAPI, REST API design Databases: PostgreSQL Version Control: Git, GitHub ──────────────────────────────────────── LET'S START SMALL Start with a Diagnostic Session. Fixed price: $250. You share your documents and describe the problem. I review your current approach, identify the exact failure points, and deliver a written action plan with implementation steps. No long commitment. If you choose to proceed, we scope the full pipeline together. If not, you still have a concrete plan you can share with anyone. Send me a message with a brief description of your document problem. I'll tell you within 24 hours whether I can help and how.

I'm a seasoned software developer with more than 35 years in tech. Throughout my career, I've encountered nearly every challenge you can imagine-and have successfully navigated each one. My goal is straightforward: identify the core of your problem, provide reliable solutions, and deliver quality results: Areas Expertise: - I specialise in Networking, CDN optimisation, DevOps automation (CI/CD, AWS, Azure, GCP, Kubernetes). - AI/ML solutions, and Blockchain applications (Ethereum, smart contracts). - Full stack Web/Mobile development, comprehensive Database management (SQL & NoSQL), robust security assessments, and proactive Monitoring &Analytics. - idox, idox API for planning and public protection. Data warehousing and Communication template creation.