Hire the Best Sparx Systems Enterprise Architect Specialists

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Jason F.

London, United Kingdom

$90/hr
5.0
58 jobs

🔸 Top 1% in Upwork. 🔸 100% Job Success. 🔸 4,000+ hours. 🔸25+ years experience. I deliver high-quality, engineered software that is robust, works at scale, and can grow as fast as your business grows. ❝ High-quality software is not complicated - it just requires discipline and steadfast attention to detail on each step of the journey. ❞ What's stopping you from starting your journey to software excellence and fixing your business' pains? You can arrange a call with me to discuss your project needs for free in a 30-minute consultation call! Hi. I'm Jason - an experienced (25+ years) software architect and engineering professional involved in all parts of the SDLC (Waterfall, Agile and Hybrid methodologies). With a wealth of experience across industries such as commercial aviation, banking (real-time payments processing & FX), 24/7/365 manufacturing lines, e-commerce, and public transport (smart card), I will bring a passion for delivering elegant and reliable solutions to your project. I will work with you (and your team) to provide the best possible technical solution to your business problem. No matter the business domain or challenges you are facing, l have deep technical and architectural knowledge, as well as excellent communication skills, to help solve your business problem with the right software solution. I will bring to bear a highly focused set of technical and people skills to help your project succeed. The recommendations and advice I provide focus on minimizing risks and maximizing your project's chances of success. This is what my 25+ years of experience bring you: honest, robust, and intelligent solutions to see you succeed. When asked to build software, I deliver high-quality server-side C# .NET software solutions that give what you need: Software engineered to be robust, scalable, and designed to exceed your business expectations. What you'll get when you choose me to work with you: ⭐️ Clear, effective communication ⭐️ Precise, quality recommendations to ensure success for your project ⭐️ A focused, collaborative approach to work with you and your team ⭐️ A no-nonsense, results-focused approach that delivers value to your project For example, this are what a couple of my clients had to say: ❝Jason is by far the best architect I have ever worked with. He displays extreme ownership of his work and it's incredibly refined. Every deliverable was on time or ahead of time. Not only did Jason provide an incredibly performant and scalable architecture, the documentation he provided was top notch. I will forever keep Jason and my goto for any and all technical and solution architectural needs.❞ Cade - VP Engineering - US Software Company ❝Jason helped get our team on our feet for doing proper documentation and much more, actually. He helped improve the engagement of our team members and how they work together. If we can, we will surely ask for his help again in the future. I can only give high praise of Jason's quality of work. We highly recommended for documentation and general architectural design work.❞ Alexander L - Acting CTO - Global On Media If you are interested in working together, please invite me to your job on Upwork. I look forward to hearing from you soon and helping you deliver on your software vision. Regards, Jason. A highlight of my technical specialties I can help you with: ✅ .NET Technical and Solution architecture consultancy and design ✅ C#.NET ✅ Team leading, technical .NET mentoring, and coaching ✅ High availability solution designs (24/7/365) ✅ Event-driven architectures (including actor-based systems) ✅ Highly concurrent software design (thread-safe) ✅ High volume, low latency software designs ✅ Cloud (MS Azure and AWS) solutions ✅ Hybrid (on-premise and Cloud) solutions ✅ Microservices ✅ Message brokers and ESB ✅ SOLID, DDD, OOP, and TDD ✅ Experienced in Agile and Hybrid delivery models ✅ Container (Docker) deployments software using CI/CD (Azure Devops) ✅ Dependency Injection (DI using Autofac, DryIoc) A highlight of the software products I'm experienced with: ✅ Sparx Enterprise Architect ✅ JetBrains Rider IDE ✅ Confluence, JIRA ✅ Git ✅ Resharper, DotMemory, DotTrace ✅ VMWare (Fusion) ✅ Visual Studio 2019 IDE Other clients had this to say about my work with them: ❝Jason was a tremendous professional, outstanding architectural skills and understanding both technical and business requirements.❞ Brian V - COO - LaunchControl

  • Enterprise Architecture
  • Akka.NET
  • Solution Architecture
  • Solution Architecture Consultation
  • Software Consultation
  • Enterprise Software Development
  • TOGAF
  • Software Architecture & Design
  • Cloud Computing
  • .NET Core
  • C#
  • Microservice
  • Multithreaded Programming
  • API Development
  • Requirements Specification
Mikhail O.

West Palm Beach, Florida

$95/hr
4.3
574 jobs

🚀 SENIOR FULL-STACK AUTOMATION ENGINEER — AI · CRM/ERP · DevOps I build production AI agents, automation workflows, and end-to-end integrations as ONE technical partner — instead of clients juggling 3-4 specialists who blame each other when systems break. Trusted across 20+ verticals since 2019. 📊 TRACK RECORD (6+ years on Upwork) ✅ $1M+ earnings · 462 projects ($2K → $500K range) · 16,635 hours logged ✅ 100% Job Success Score · Top Rated Plus ✅ 5,000+ workflows deployed · $5M+ saved · 100K+ hours of manual work eliminated ✅ AI agents in production handling 10,000+ calls/month ✅ Certified partners: Monday, Make, Vapi, Retell AI, Palantir Foundry ✅ Supported by Retailbox team (15K+ combined hours) for surge capacity ✅ Average response under 4 hours · US East Coast (West Palm Beach, FL) ✅ Available 10-30 hrs/week or full-time burst engagements 🏆 RECENT WINS (anonymized) • AI Copilot for $500M+ investment portal — Salesforce + SharePoint + RAG, 4-month build • Multi-tenant AI SaaS for elder care lead intelligence — scraping + AI scoring + dashboard • Healthcare wound care platform — HIPAA-compliant, mobile + EMR + AI transcription • Estate Planning AI Copilot — Claude + custom legal workflows for law firm • B2B Outbound System — Apollo + Clay + Smartlead + AI personalization, 1,000+ leads/week • ERP transformation — QuickBooks → Tryton migration, custom Python pipeline • AI Acquisition Engine — Multi-source enrichment + LLM scoring for B2B sales team 🌐 INDUSTRIES Home Services & Trades (HVAC · Plumbing · Electrical · Roofing · Solar · Pool · Painting) · Healthcare & Medical (Clinics · Pharmacy · Health Insurance · EMR · HIPAA) · Financial Services (Mortgage · Insurance · Investment · Crypto · Payments) · Manufacturing (Cabinet · Furniture · Steel · Civil Engineering) · Real Estate & Property · Marketing & Sales Agencies (GHL · HubSpot) · Construction & Contractors · Legal & Compliance · Retail & E-commerce (Shopify · Amazon · WooCommerce) · SaaS & Tech Startups · Telecom · Trucking · and more. 🤖 WHAT I DELIVER AI Engineering • Custom AI agents (Claude, GPT, Gemini) with tool calling • MCP server development for enterprise systems • RAG with vector databases (Pinecone, Weaviate, Qdrant, pgvector) • LangChain, LangGraph, CrewAI orchestration • I use Claude Code, Cursor, Codex daily — ship 5× faster Workflow Automation • n8n, Zapier, Make, Windmill, Power Automate • Custom Python/Node replacing fragile no-code chains • ETL pipelines (CRM ↔ data warehouse, AI training data, ERP migrations) • Event-driven systems, drip campaigns, scheduled reports CRM/ERP Integration & Architecture • HubSpot, Salesforce, Zoho, Monday, Pipedrive, Dynamics 365, GHL, Close CRM • NetSuite, Odoo, QuickBooks, Xero, Stripe • Field service — ServiceTitan, Jobber, Housecall Pro • Healthcare — eClinicalWorks, FHIR, HL7 • Multi-system architectures (5+ platforms unified) Full-Stack Development • React, Next.js, Node.js, Python, FastAPI, Django • Mobile — React Native, native iOS/Android • AI dashboards, admin panels, internal tools • PostgreSQL, MongoDB, Redis DevOps & Cloud • AWS, GCP, Azure · Docker, Kubernetes, CI/CD • Production monitoring, observability, security • HIPAA / SOC2 / PCI-aware integrations Voice AI — Vapi, Retell AI, Bland AI, Twilio (when use case fits) 🎯 COMMON ASKS • Claude/GPT integration into your app or CRM • AI SDR that books meetings (Apollo + Clay + Smartlead + Claude) • RAG chatbot trained on your company data • CRM automation with AI lead scoring (HubSpot/SF/Zoho/GHL) • Field service workflow (ServiceTitan/Jobber + AI) • Internal AI dashboard for ops team (Retool/custom) • Migrate Zapier/Make spaghetti to maintainable code • AI-powered mobile MVP (React Native + Claude) • Voice AI receptionist (Vapi or Retell + CRM sync) • ETL pipeline (QuickBooks/NetSuite ↔ data warehouse) • Custom MCP server for your team's Claude 🎯 IDEAL FIT I serve all sizes: • SMB ($1K-$10K) — small but specific automation that pays back fast • Mid-market ($10K-$100K) — multi-month engagements, multi-system builds • Enterprise ($100K-$500K+) — strategic platform builds, AI-native systems Engagement models: • $2K-$15K fixed scope (1-6 weeks) • $50K+ for AI/full-stack platform builds • $95-125/hr fractional (10-30 hrs/week, weekly Slack sprints) • Long-term Tech Support retainers 💼 HOW I WORK Week 1 — discovery + architecture · Week 2-N — weekly build sprints with daily Slack · Final week — production deploy with docs, tests, handoff. You own the code (zero agency lock-in). Available for ongoing maintenance OR clean handoff to your in-house team. 💬 NEXT STEP Send a 2-3 sentence brief: what you're building, your current stack, and the specific problem you want solved. Loom walkthroughs, existing repos, and architecture diagrams welcome.

  • Python
  • Artificial Intelligence
  • AI Agent Development
  • API Integration
  • API
  • Machine Learning
  • AI Development
  • AI Model Integration
  • Amazon Web Services
  • Automation
  • n8n
  • Claude
  • HubSpot
  • Salesforce CRM
  • Zoho CRM
  • Zapier
  • CRM Software
  • DevOps
  • ETL Pipeline
  • Mobile App Development
Ghazal A.

London, United Kingdom

$45/hr
5.0
3 jobs

20-year Solution Architect and Fractional CTO helping Series A–C SaaS scale-ups and Fortune 500 teams ship cloud-native, AI-powered systems that don't break at 10× load. DevOps, Software Architecture, AI consulting — delivered, not theorized. If your roadmap has any of these on it — a cloud migration that's slipping, an AI/LLM feature that demos well but won't survive production, a monolith you need to break up without freezing the product team, or a DevOps platform that's burning cash and on-call time — I've shipped that exact engagement before, more than once. What I do (and have done for 20 years): ✅ Solution & Software Architecture — system design, domain modeling, microservices vs. modular monolith trade-offs, event-driven & API-first platforms, architecture reviews and ADRs your team will actually follow ✅ DevOps, Cloud & Platform Engineering — AWS / Azure / GCP, Kubernetes (EKS/AKS/GKE), Terraform, CI/CD, FinOps cost reduction, SRE / observability, zero-downtime migrations ✅ AI Consulting & AI Solutions Architecture — production LLM / RAG systems, agentic workflows, AI strategy roadmaps, build-vs-buy decisions, model selection, evaluation harnesses, vector DBs, secure enterprise AI ✅ Fractional CTO & Tech Due Diligence — for founders pre-Series A through Series C; for PE / VC pre/post-investment For startups & scale-ups: I move at founder-speed. MVP architectures that won't need a rewrite at Series B, AI features you can actually ship, hiring plans for your first 5 engineers, and an architecture roadmap your investors will respect. For enterprises: I bring TOGAF-style rigor without the consultancy bloat — solution architecture, cloud migration strategy, vendor-neutral AI roadmaps, security/compliance-aware design (SOC 2, ISO 27001, HIPAA, GDPR), and stakeholder-ready documentation. Selected outcomes from the last 20 years: 🏆 Cut cloud spend 41% and shortened deploy time from 45 minutes to under 5 minutes for a SaaS platform serving 12M users 🏆 Designed the AI/RAG architecture that took a B2B SaaS from PoC to production with 30+ enterprise customers in 5 months 🏆 Re-architected a legacy monolith into modular services with zero customer-facing downtime over 7 months 🏆 Led DevOps platform builds (Terraform + Kubernetes + GitOps) that cut on-call pages by 70% and onboarding from weeks to days How I work: small commitments first. Most engagements start with a paid 60-minute architecture call or a 1–2 week assessment, so we both know it fits before you commit to a long retainer. I write things down. I document decisions. I leave your team better than I found it. What I won't do: rewrite-the-world projects with no executive sponsorship, "just do everything yourself" engagements with no engineering team to hand off to, or AI demos that aren't on a path to production. Send me a paragraph about your stack, your team size, and the outcome you need in the next 90 days. I'll come back inside 24 hours with a short, specific point of view not a sales pitch. If we're a fit, we'll book a working call from there.

  • Enterprise Architecture
  • DevOps
  • Information Security
  • Compliance
  • Government Reporting Compliance
  • Solution Architecture Consultation
  • Solution Architecture
  • Software Architecture
  • AI Consulting
  • Cloud Architecture
  • AWS Lambda
  • Kubernetes
  • Terraform
  • CI/CD
  • Microservice
  • Azure DevOps
  • Google Cloud Platform
  • Docker
  • LLM Prompt Engineering
  • Python
Mariusz F.

Warsaw, Poland

$79/hr
5.0
238 jobs

I am a professional freelancer with THIRD PARTY LIABILITY INSURANCE for over two and a half million dollars, so you are in safe hands. I am Microsoft Certified Trainer, Office 365, GCP, AWS, and Azure Expert. Honored as Microsoft Most Valuable Professional in Azure area. I cover architecting, security, administrating, and migration of all three major clouds – Azure, AWS, and GCP. Apart from the main area of Cloud expert in the field of infrastructure servers Windows Server 2003-2016, Microsoft Active Directory, Hyper-V Private Cloud, IIS, System Center, SQL. Private Cloud, System Center, Hyper-V, Open Stack Expert, and all Microsoft products Expert. Linux Server administrator. I am the holder of certificates: • pSeries AIX UNIX Support • First Certificate in English • PRINCE2 Practitioner • Microsoft Certified: Azure Administrator Associate • Microsoft® Certified Solutions Expert: Cloud Platform and Infrastructure • Microsoft® Certified Solutions Associate: Cloud Platform • Microsoft® Certified Solutions Expert: Productivity • Microsoft® Certified Solutions Expert: Data Management and Analytics • Microsoft® Certified Solutions Associate: Windows Server 2016 • Microsoft® Certified Solutions Associate: Windows 10 • Microsoft Specialist: Configuring Windows Devices • Microsoft Specialist: Architecting Microsoft Azure Solutions • Microsoft Certified Solutions Developer: Azure Solutions Architect • Microsoft Specialist: Developing Microsoft Azure Solutions • Microsoft® Certified Solutions Expert: Data Platform • Microsoft Specialist: Implementing Microsoft Azure Infrastructure Solutions • Microsoft® Certified Solutions Associate: Office 365 • Microsoft® Certified Solutions Expert: Private Cloud • Microsoft® Certified Solutions Expert: Messaging • Microsoft® Certified Solutions Associate: SQL Server 2012/2014 • Microsoft® Certified Solutions Associate: Windows Server 2012 • Microsoft® Certified Solutions Expert: Server Infrastructure • Microsoft® Certified IT Professional: Enterprise Administrator on Windows Server 2008 • Microsoft® Certified Solutions Associate: Windows Server 2008 • Microsoft® Certified Technology Specialist: Windows Server 2008 Applications • Microsoft® Certified Technology Specialist: Windows Server 2008 Network • Microsoft® Certified Technology Specialist: Windows Server 2008 Active Directory • Microsoft® Certified Technology Specialist: Microsoft Exchange Server 2010

  • Microsoft Azure
  • Microsoft Exchange Server
  • Windows Server
  • AWS Lambda
  • Linux System Administration
  • Microsoft Azure SQL Database
  • Azure App Service
  • Alexa Skills Kit
  • Amazon ECS
  • Disaster Recovery
  • Database Administration
Vikram C.

Secunderabad, India

$40/hr
4.9
86 jobs

I help startups and enterprise teams turn complex ideas into production-ready SaaS platforms. 𝟮𝟱+ 𝘆𝗲𝗮𝗿𝘀 | 𝗘𝘅-𝗩𝗲𝗿𝗶𝘇𝗼𝗻 / 𝗛𝗖𝗟 𝗣𝗲𝗿𝗼𝘁 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 | 𝟰 𝗦𝗮𝗮𝗦 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝗹𝗮𝘂𝗻𝗰𝗵𝗲𝗱 | 𝟲𝟲+ 𝗨𝗽𝘄𝗼𝗿𝗸 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 – 𝟭𝟬𝟬% 𝘀𝘂𝗰𝗰𝗲𝘀𝘀 | 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 𝗧𝗢𝗚𝗔𝗙 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗘𝗔 I don’t just design systems — I take ownership of delivery outcomes. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗪𝗼𝗿𝗸𝗲𝗱 𝗙𝗼𝗿: Telecom, Logistics, Strategy Management, Supply Chain, Agri-tech, Healthcare, Real estate etc. I have worked in the past for clients from accross the world (Esp: United States, Middle East, United Kingdom, Australia, India). Currently, as a solopreneur and freelancer, I am involved with multiple clients supporting them with the following: 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗣𝗿𝗼𝘃𝗶𝗱𝗲𝗱 🌟Software Product Strategy, 🌟SAAS Product Development, 🌟Enterprise architecture, 🌟Solution/ Technical/ Cloud Architecture, 🌟AI Product Management 🌟Software Audit, Review, Assessments 🌟Agile Project Management 𝗪𝗼𝗿𝗸 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 🌟Enterprise Architecture Services from 2015 till now 🌟Principal Architect with Verizon India (2006 - 2015) 🌟Sr. Architect at Emirates Airlines IT from 2004 - 2006 🌟Full Stack Developer at HCL Perot Systems from 2000 - 2004 𝗩𝗮𝗹𝘂𝗲 𝗣𝗿𝗼𝗽𝗼𝘀𝗶𝘁𝗶𝗼𝗻 I design and implement scalable, efficient, and innovative technology solutions that align with your business objectives. With a proven track record in orchestrating successful IT transformations, I specialize in optimizing system performance, enhancing user experiences, and maximizing return on investment. By bridging the gap between complex technical requirements and strategic business goals, I enable organizations to achieve operational excellence and drive sustainable growth.

  • Enterprise Architecture
  • Project Management
  • Solution Architecture
  • Amazon Web Services
  • TOGAF
  • Software Architecture & Design
  • SaaS Development
  • Web Development
  • Architectural Diagram
  • Product Strategy
  • Mobile App Strategy
  • Solution Architecture Consultation
  • Technical Project Management
  • AI App Development
  • ChatGPT
Sudhir S.

Mumbai, India

$20/hr
5.0
14 jobs

I am a senior developer with 21 Yrs. of experience ( 12+ Yrs with JPMorgan and rest with Deloitte, HCL and other) in Java/J2ee, Python, Rest API, SOAP API, javascript, OAuth, SSO, Kafka, SpringBoot, HTML, CSS, PHP, Web Design, Web Development, React, Redux, Angular, e-commerce, Wordpress, Shopify, JPA, Cloud, AWS, Azure, GCP, Private cloud, JBPM, n8n, Oracle BPM, JMS, Hibernate, Struts, Spring Batch, ESB, Base44, Playwright, Selenium, JavaFX, Lisp, Prolog, Weka , OpenAI, Different Web as well as Application Servers, different Operating Systems and DBMS Tools, SQL, NoSQL, PostgreSQL, Mongo, Cassandra, MYSQL, Oracle, Supabase, AI, NLP, OpenAI, agent development, Wordpress, php , CI/CD, Agile and various open-source tools, technologies and frameworks. Some of the domains I have worked on are Banking, finance, Trade, Crypto, HR, Insurance, Learning, NLP, Healthcare, System architecture, Developers Tooling, Document management, AI, DevOps, Cloud, GCP, Hubspot, Quickbook, PandaDoc, Stripe, web3, Blockchain, etc. ********************************************************************* Experience Summary: Freelancing || Freelancing || Present Toyow || Solution Architect || Sep 24 to JAN 25 JPMorgan || Vice President || (Around 12 Yrs. Total) Deloitte || Senior Consultant/Specialist Senior || Jun 13 to Jun 15 HCL || Onsite/Offshore Dev lead || Sep 06 to May 10 Birla Soft Ltd || Software Engineer || Jan 06 to Sept 06 GIIT || Developer || Feb 05 to Oct 05 ************************************************************************* Some of the applications are as below: - Document generation system - Online translation system using NLP - Library management system - HRMS System - Networking system - Tools for Developer and Operate to build and deploy their applications. - Workflow as a service - Workflow Platform for Mutual Fund NAV processing (Fund accounting) - Prediction analysis for SLA miss. - A real time dashboard for fund processing - Messaging Platform supporting MQ, SFTP, REST, Kafka, FIX, - Trade instruction manager - Customer support system for Bank operators - Platform for Tokenization Assets using Blockchain - A social Media application - A insurance management Platform - Applications developed on Base44 - Loan record reports - OCR for healthcare reports and data processing. - ChatBot for Patient enquiry. - Coin analysis using AI (openAPI integration). - A Platform for affiliate marketing. - CI/CD for Gitlab and AWS.

  • Java
  • Spring Framework
  • Python
  • Apache Kafka
  • Spring Boot
  • React
  • Angular
  • jBPM
  • Microservice
  • PHP
  • Next.js
  • Mule
  • Full-Stack Development
  • Back-End Development
  • Web Design
  • Artificial Intelligence
  • Cloud Architecture
  • Azure DevOps
  • Blockchain
  • Web3

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

At A Glance: Sparx Systems Enterprise Architect

As businesses and enterprises grow and spread across the globe, they become more and more diverse. Developing powerful and efficient software to serve the needs of ever-expanding enterprises is one the most important aspects to maintaining steady business growth in the modern global marketplace. Oftentimes, this enterprise software contains highly specialized modules and applications, but despite their specialization, these applications still need to fit in with and communicate with the hierarchy of the rest of the business. SparxSystems Enterprise Architect is a graphical user system that allows for the visualization and manipulation of enterprise software both as a standalone product and during development of enterprise software.

A SparxSystems Enterprise Architect specialist is a highly-skilled software developer with experience working with enterprise systems. A specialist can work with the Sparx Architect to provide visuals for modeling business cycles, industry domains, and other aspects of enterprise software. Working with these models and GUIs, a specialist can help you and your software development team identify and locate various modules and applications that need to be updated or otherwise altered. Partnering with a specialist allows you the flexibility to address and customize the aspects of your enterprise software that you need the most while giving you control over the way your software and business interact. Hiring a freelance specialist on Upwork can provide you and your business with a cost-effective way to analyze the software development of your most vital applications.