I am a Double CCIE (Enterprise & Security) and CCDE-certified Network Architect with 10+ years of experience helping enterprises, service providers, and government organizations design and secure their most critical networks.
Unlike freelancers who only “configure devices,” I partner with clients at a strategic level—translating business goals into secure, scalable, and resilient network architectures. My designs have supported global operations, critical public services, and high-availability financial systems.
🚀 What I Specialize In
Network Strategy & Architecture – Business-aligned, intent-based designs that scale
Enterprise & Campus Networking – Cisco, Arista, Juniper, multi-vendor solutions
Advanced Security – Zero Trust frameworks, firewalls, VPNs, compliance-ready designs
Data Center & Cloud Networking – VXLAN, EVPN, Cisco ACI, UCS X-Series, hybrid models
Service Provider Solutions – MPLS, L2/L3 VPNs, resilient metro Ethernet
Automation & Optimization – Ansible, Python, Git/GitLab for efficiency & reliability
💡 What You Get
Vendor-agnostic, business-focused designs (HLD & LLD)
Migration strategies that minimize risk and downtime
Security-first architecture reviews and audits
Clear, executive-ready documentation and technical roadmaps
Advisory-level consulting plus hands-on expertise when required
My clients value that I simplify complexity, communicate clearly, and always deliver future-ready solutions—not just quick fixes.
If you’re looking for a consultant who can design, optimize, or secure your network while keeping your business goals front and center, let’s connect.
Virtualization
Network Engineering
Network Design
Cisco Certified Internetwork Expert
Wireless Network Implementation
Network Planning
Cisco Certified Design Associate
VoIP Administration
Internet of Things
Telecommunications Engineering
Jerome J.
Woodstock, United Kingdom
$100/hr
4.7
27 jobs
I deliver implementation-ready architecture and delivery plans for SaaS platforms in regulated industries. My most recent engagement produced a 100+ page technical blueprint for a German energy comparison platform covering multi-tenant architecture, RBAC, GDPR compliance, API contracts, database schemas, and a phased delivery roadmap. The client described the outcome as "very detailed and on point."
My regulated industry experience spans energy, space and defence (Satellite Applications Catapult, Innovate UK), aviation (MyAirOps), healthcare, medical research, and fintech.
What you get:
Architecture and delivery plans: system designs, data models, API contracts, security frameworks, and phased roadmaps. Not theoretical frameworks. Specifications your developers can build from on day one.
Rapid prototyping and validation: I use AI-augmented development daily through MVP Foundry, my own methodology for compressing MVP timelines. I can validate architectural decisions with working code, not just documents.
25 years across CTO, solutions architect, and delivery roles. BCS Certified in Enterprise & Solution Architecture. 100% Job Success. Expert-Vetted (top 1%).
Typical engagements:
- Fixed-price architecture and delivery plans (2-3 weeks, from $3,600)
- MVP build using AI-augmented development (from $5,000)
- Fractional technical advisor (ongoing, part-time)
- Technology selection and vendor evaluation
Solution Architecture
Data Modeling
Software Architecture & Design
Agile Software Development
AI Agent Development
JavaScript
Python
Machine Learning
TypeScript
SaaS Development
Amazon Web Services
Microsoft Azure
API Development
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
Cloud Computing
Akka.NET
Solution Architecture
Solution Architecture Consultation
Software Consultation
Enterprise Software Development
TOGAF
Software Architecture & Design
.NET Core
C#
Microservice
Multithreaded Programming
API Development
Requirements Specification
Olayinka Israel P.
Liverpool, United Kingdom
$30/hr
5.0
24 jobs
I’m a Multi-Cloud Solutions Architect and DevOps Engineer with 7+ years of experience delivering enterprise-grade DevOps and cloud platforms across Azure, AWS, and GCP. I specialise in designing and operating secure, highly available environments, with a strong track record in HA GitLab architectures, CI/CD automation, Terraform, and multi-cloud migrations.
I’ve helped organisations reduce cloud costs by 25%, automate deployments by over 70%, and maintain 99.99% uptime for mission-critical systems. My hands-on work includes building CI/CD pipelines with GitLab CI, Azure DevOps, Jenkins, GitHub Actions, and Argo CD, implementing Infrastructure as Code with Terraform, Bicep, and CloudFormation, and running Kubernetes platforms (AKS/EKS) at scale.
I work end-to-end across architecture, automation, security, monitoring, and documentation. If you need someone to own your DevOps setup and make it production-ready, let’s talk.
CERTIFICATIONS:
Open group TOGAF Enterprise Solutions Architect
AWS Certified Solutions Architect Professional
AWS Certified SysOps Administrator Associate
AWS Certified Solutions Architect – Associate
AWS Certified Cloud Practitioner
Microsoft Certified: Azure Solutions Architect Expert
Microsoft Certified: Azure Administrator Associate
Microsoft Certified: Azure Network Engineer Associate
Microsoft Certified: Security Operations Analyst Associate
Google Cloud Professional Cloud Architect
Google Cloud Associate Cloud Engineer
Cisco Certified Network - Associate
Enterprise Architecture
DevOps
TOGAF
GitHub
GitLab
Cloud Security Framework
Microsoft SharePoint Administration
CI/CD
Terraform
Kubernetes
Docker
Data Analysis
Microsoft Power BI
Microsoft Excel
Tableau
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
Cloud Architecture
DevOps
Information Security
Compliance
Government Reporting Compliance
Solution Architecture Consultation
Solution Architecture
Software Architecture
AI Consulting
AWS Lambda
Kubernetes
Terraform
CI/CD
Microservice
Azure DevOps
Google Cloud Platform
Docker
LLM Prompt Engineering
Python
Frederick G.
London, United Kingdom
$49/hr
5.0
2 jobs
IT Experience: 24 Years
IT Security Experience: 20 Years
Core Competencies:
* Business Continuity Management
* Data Leakage Prevention
* Insider Threat Risk Management
* Security Operations Centre Build
* Security Awareness training
* General Data Protection Regulations (GDPR)
* ISO 27001 Risk Assessments
* SOC2 Compliance
* TISAX Compliance
* NIST Framework
* Anti-Fraud Risk Management and Controls Enforcement
* E-Discovery and E-Disclosure
* Information Security Risk Management
* Digital Forensics
* CIS compliance
* Business Impact Assessments
* Governance, Risk, and Compliance Reporting
ISO 27001
SOC 2
SOC 2 Report
Penetration Testing
Risk Management
Ransomware Mitigation
Threat Detection
Unified Threat Management
Cybersecurity Management
Information Security Governance
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