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AI Systems Builder  ·  Founder @ Devsphinx

Salman
Nausher.

I build software
that thinks.

I design and deploy autonomous AI agent systems and AI-first software products — where intelligence is the foundation, not a feature bolted on later.

Previously a full-stack engineer with $200K+ delivered on Upwork. Now an AI systems architect running Devsphinx.

$200K+
Total earned · Upwork
Verified
9,210
Hours logged · Upwork
Verified
4.9
Rating · 24 jobs
Top Rated Plus
100%
Job success score
Verified
Scroll
About me

Why I went
all-in on AI.

I spent 4 years building software — Rails backends, React frontends, mobile apps, SaaS platforms. I was good at it. Top Rated Plus on Upwork, $200K+ delivered, a 100% job success score. By every traditional metric, things were going well.

But I kept watching the same pattern repeat: clients would hire engineers to build software that automated something humans were doing manually. A form that replaced a spreadsheet. A dashboard that replaced a report. A scheduler that replaced a phone call. We were automating the symptom, not the cause. The human judgment layer was still there — just one step removed.

"The next wave wasn't going to be software that moved data faster. It was software that could think about the data."

When I saw what large language models could actually do — not the demos, but the production deployments — I made a deliberate choice. I rebuilt everything around agentic AI. Multi-agent systems where AI doesn't just process inputs — it reasons, coordinates, decides, and acts autonomously.

I founded Devsphinx to build exactly that for founders and operations leaders who want to eliminate the highest-cost, lowest-leverage work in their business. My full-stack engineering background is what makes the difference. I don't just design agent architectures — I build them to production standard, integrate them with real systems, and deploy them into real operations. The 9,210 hours on Upwork weren't spent on prototypes.

Visit Devsphinx → Book a call

Experience

Where I've been.
What I've shipped.

2024 — Present
Devsphinx
Current
Founder & AI Systems Architect

Founded Devsphinx to build autonomous AI agent systems and AI-first software products for B2B companies. Designing multi-agent orchestration pipelines on Claude, MCP integrations with CRMs and operational tools, and full-stack AI-first SaaS products.

Claude APIMCPMulti-agentAI architectureFounder
2020 — 2024
Upwork · Freelance
Full-Stack Engineer · Top Rated Plus

4 years delivering production software across 24 contracts for clients in SaaS, fintech, e-commerce, and professional services. $200K+ earned, 9,210 hours logged, 4.9★ rating, 100% Job Success Score. Specialised in Rails backends, React frontends, and API-heavy product development.

Ruby on RailsReactNode.jsPostgreSQLAPI integrations
Earlier
Various
Software Developer · Full-Stack

Web and mobile application development — building MVPs, scaling products, and working across the stack from database design to frontend UI. Built the technical foundation that now runs as production-grade AI systems architecture.

Web appsMobile appsSaaSMVP builds

Services

What I build
through Devsphinx.

Two modes of engagement. One standard — AI at the center from day one, not retrofitted afterward.

01  /  Agent systems

Autonomous AI agents

Multi-agent systems built on Claude that handle sales outreach, operations workflows, customer support, and internal processes — 24/7 without human input. Research agents, personalisation agents, CRM sync agents, orchestration layers. Not chatbots — systems that think and act.

Claude APIMulti-agentMCPTool useMemory systems
Full details at Devsphinx →
02  /  AI-first software

Software built around AI

SaaS platforms, internal tools, and vertical applications where AI is the core architecture — not a feature added after launch. Every workflow is designed around what the model should handle. Next.js frontends, Rails or Node backends, and LLM layers that make the software smarter over time.

Next.jsReactRailsLLM integrationRAG
Full details at Devsphinx →
03  /  Integration

AI layer for existing products

Already have a product? I build the AI layer — Claude-powered features, intelligent automation, and agent capabilities into your existing codebase. Proper architecture and prompt management, not quick hacks. Works alongside your current stack without a rewrite.

Claude APIPrompt engineeringEvalsCost monitoring
04  /  Advisory

AI architecture consulting

For teams that want to build AI-first but aren't sure where to start. I review your existing architecture, identify where AI creates the most leverage, design the agent system or integration layer, and produce a build-ready spec your engineering team can execute.

Architecture reviewAI strategyAgent designTechnical spec

The stack

Full-stack roots.
AI-native build.

The engineering depth is what makes the AI systems reliable. You can't build production agent systems without understanding the infrastructure underneath them.

AI & Agents
Claude API (Anthropic)
Model Context Protocol (MCP)
Multi-agent orchestration
RAG systems & pgvector
LangChain / LlamaIndex
OpenAI API
Prompt engineering & evals
Memory & context systems
Frontend & Mobile
React / Next.js
TypeScript
React Native
Tailwind CSS
Vue.js
Redux / Zustand
REST & GraphQL APIs
Framer Motion
Backend & Infrastructure
Ruby on Rails
Node.js / Python
PostgreSQL / Redis
HubSpot / Salesforce MCP
AWS / Railway / Render
Sidekiq / job queues
Webhooks & event pipelines
Docker & CI/CD

Projects

What's been built.

First AI system deployments through Devsphinx are live. Full case studies with metrics and architecture diagrams publishing in the coming weeks.

Agent system  ·  Revenue

AI outbound pipeline replacing a full-time SDR

5-agent Claude system handling prospect research, personalised outreach, reply detection, and CRM sync for a 40-person B2B company. Zero human input after initial setup.

ClaudeMCPHubSpot
In progress
Agent system  ·  Recruitment

Autonomous CV screening and candidate scoring agent

Claude-based agent ingesting CVs, scoring against job criteria, drafting outreach, and scheduling interviews — no recruiter input required at any stage.

ClaudePythonNotion
In progress
AI-first SaaS  ·  Platform

Mentoring platform with AI matching and session intelligence

Full-stack SaaS product with Claude-powered mentor matching, session summarisation, goal tracking, and progress analysis at the architecture core.

Next.jsRailsClaude
Coming soon

Track record

Not claims.
Verified numbers.

Four years. 24 contracts. Every number below is public, verified, and earned delivering production software for real clients.

$200K+
Total earned across all contracts
9,210
Billable hours logged on platform
4.9
Average client rating across 24 jobs
100%
Job success score · Top Rated Plus

Why this matters for AI work: These numbers represent 4 years of shipping production software on deadline, communicating clearly under pressure, and delivering exactly what was scoped. That delivery discipline is what separates AI systems that get built, deployed, and used — from AI demos that never leave staging.



Client reviews

What clients say
after the work ships.

Every review below is verified on Upwork. All contracts rated 5.0★ — 100% job success across 24 jobs.

Track record
3,027 hrs
Logged on this one engagement
4.9
Average rating, 24 jobs
100%
Job success score
Full history

Every contract, every rating — nothing cherry-picked.

View all on Upwork →
SH
"Salman was an absolute superstar on this contract, working with a very challenging integration. He produced a top-notch end result, and showed tremendous skill and ability."
Shaun Hughston
CEO & Founder, Agility Automation · Patient Management System Integration
SH
"Salman overperformed on this contract — highly skilled, very professional, and worked well within a tight timeframe. Highly recommended."
Shaun Hughston
CEO & Founder, Agility Automation · Payment Gateway Integration
RF
"Salman is a very talented and knowledgeable developer. He was an important part of the development team for several months and involved in almost all aspects of the project. High quality result. Highly recommend."
Rusty Flick
Founder, Gomalu  ·  Complex Web Application

In their words

Hear it directly
from a client.

Two minutes, unscripted — Shaun on what it was like working together.

▶  Video testimonial Video testimonial from Shaun Hughston
SH
Shaun Hughston
CEO & Founder, Agility Automation

Salman Nausher, founder of Devsphinx
Founder  ·  AI Systems Architect

Every project. Every line. One person accountable.

Who you'll work with

You talk to the
person who builds it.

There's no team behind this page pretending to be bigger than it is. When you book a call, you're talking to me — the person who scopes the system, designs the architecture, writes the code, and answers for the result. No account managers, no hand-offs, no junior dev learning on your budget.

I've spent four years shipping production software, and the last couple deep in the Claude ecosystem — agent architectures, MCP integrations, AI-first product design. I take on a small number of builds at a time, so everything that ships carries the standard this page promises.

24
Upwork contracts, start to finish
4.9
Average client rating
100%
Job success score
Salman Nausher
Founder, Devsphinx

Have an idea?
Let's build something
that thinks.
Currently taking on new projects
Get in touch

Let's talk about what you're building.

Whether it's an AI agent system, an AI-first product, or you're not sure which yet — start with a free 30-minute call. I'll listen and tell you honestly what the right approach looks like.

Duration30 min · free · no obligation