Cortexiva · est. 2018 · Full-cycle engineering01 / Studio brief

WebMobileAI / MLDesign

BuildingDigital ProductsThat Outlast Trends.

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150+

Successful projects delivered

8 yrs

On the market

90+

Senior specialists in-house

4.4 yrs

Average client lifespan

02 · About the studio

Engineering partner for productsthat stay shipped.

Cortexiva is a full-cycle software development studio with 8 years of experience building web, mobile, and AI-powered products.

We partner with startups and enterprises to deliver engineering excellence — on time, on budget, built to last. Our clients don't just hire us once. They stay.

Full-cycleWebMobileAI / MLDevOpsDesign

150+

Successful projects delivered

4.4 yrs

Average client lifespan — clients don't just come back, they stay

95%

Of projects are long-term engagements

90+

Senior specialists on board

03 · Client testimonial

The quality of work was top notch and we got positive feedback from the customers.

Gavin Wedell

CEO — ChangePlan

EnterpriseCloud PlatformChange Management

04 · Three reasons + four perks

Why Cortexiva outshines the competition.

Engineering excellence — we are the experts

We are, above all, exceptionally strong engineers. Our team lives at the frontier of technology — mastering AI, modern cloud architectures, and the latest frameworks before they go mainstream. Clean code, scalable architecture, zero shortcuts. Our 4.4-year average client lifespan is the proof.

We think beyond the ticket — we bring ideas

We don't just execute tasks — we bring ideas. When we see a better approach, a potential risk, or a growth opportunity, we speak up.

Zero risk to start — guaranteed results

Free discovery call. 6-month code guarantee. Not satisfied in the first 2 weeks? You pay nothing — no questions asked. We are confident in our work, and we put our money where our mouth is.

Free discovery call

30-minute project scoping session, no strings attached.

2-week free trial

Not happy in the first 2 weeks? You pay nothing.

6-month code warranty

We stand behind every line of code we ship.

20% referral bonus

Paid right after first payment; 20% every 6 months for long-term clients.

05 · What we do best

What we do best.

Web Development

SaaS platforms, portals, corporate systems.

See related work →

Mobile Apps

iOS, Android, cross-platform.

See related work →

AI & Machine Learning

Custom models, RAG, AI assistants, automation.

See related work →

UX / UI Design

User research, wireframing, design systems.

See related work →

Web

ReactAngularVueNode.jsPythonJavaC#

Mobile

React NativeFlutterSwiftKotlin

SeleniumPlaywrightCypressPostmanPytestREST AssuredAllure

DevOps

AWSAzureDockerKubernetesCI/CD

AI integrations

OpenAIGoogle GeminiPerplexityReplicateFal.aiChatbaseClaude

06 · Portfolio · selected work

Our projects aren't just code —they're products people actually use.

8 years. 150+ projects. Healthcare, AI, Enterprise, FinTech. All built from scratch by our engineers.

Healthcare01

Artificial Intelligence & ML02

Enterprise / Corporate03

FinTech & Web304

Case 01Healthcare

AcellusHealth

Digital health companion: medication tracking, vitals monitoring, real-time doctor & caregiver sharing.

HealthcareMulti-roleReal-timeTwilio

→Helped the client work out the product architecture and business logic.
→Built a multi-role platform: Patient / Doctor / Caregiver with real-time data sync.
→Integrated Twilio SMS for low-friction health tracking without app install.
→Automated health report generation for doctor appointments.

TechReactPythonDjangoPostgreSQLAWS

Case 02AI / Social Media

SpotBOI

AI-powered platform for automating social media content: generation, scheduling & analytics.

AI / MLContent automationAsync at scale

→Designed the product architecture and defined the AI content generation workflow.
→Built an AI post generator that adapts to each brand's tone of voice.
→Developed an intelligent content calendar with scheduling, trend analysis & forecasting.
→Configured CI/CD pipeline and async processing to handle high AI request volume at scale.

TechTypeScriptReactNode.jsApolloAuth0

Case 03Enterprise

ChangePlan

Cloud platform for enterprise change managers: planning, tracking & reporting on organizational transformations.

EnterpriseAnalyticsRoles & permissions

→Helped the client define the methodology and translate it into product logic.
→Built custom analytics dashboards and a 3-level role system (Owner / Contributor / Viewer).
→Developed scalable filtering across Goals, Timelines, Actions and Risks — on every screen.
→Created branded xlsx/csv export and a custom email notification system.

TechReactMeteorMongoDBMaterial-UIHeroku

Case 04Mental Health / HR

Uprise

An app that helps companies take care of employees' mental health.

Mental healthHR techCloud infra

→Helped the client work out the business logic of the product.
→Developed a frontend application of modern standards (React, TypeScript).
→Created and deployed all the infrastructure and automated processes (AWS, CI/CD).
→Added Amplitude and Google Analytics analytical services.

TechReactTypeScriptAWSCI/CD

Case 05AI / RAG

Inkeep

AI documentation assistant: instant, source-cited answers from any knowledge base or product docs.

AI / RAGEmbeddable widgetOpenAI

→Designed RAG architecture on top of OpenAI trained on client's documentation corpus.
→Built an embeddable widget for seamless integration into any product or website.
→Engineered a feedback loop to continuously improve answer relevance & quality.
→Delivered source-cited answers with zero hallucinations — every answer is fully traceable.

TechReactOpenAINode.js

Case 06EdTech / AI

Interview Prep Platform

AI-powered interview prep platform: video answers, expert feedback & progress tracking.

EdTechVideoAI feedback

→Built the full interview simulation loop — topic selection, video recording & upload, expert feedback routing.
→Integrated AI-assisted feedback analysis for immediate insights on communication structure & clarity.
→Built progress tracking system — improvement visualized across sessions, topics & competency dimensions.
→Delivered fully responsive UI — mobile & desktop parity, REST API integration, Scrum delivery.

TechReactTypeScriptNode.jsREST APIPostgreSQLAWS

Case 07Web3

NFT Ecosystem on Solana

Production-grade NFT marketplace ecosystem on Solana: minting, auctions, royalties & multi-wallet support.

Web3SolanaMulti-walletSPL token

→Built auction & royalty management interfaces using React Hook Form with real-time validation for on-chain transactions.
→Implemented NFT minting flows for non-technical users — SPL token complexity abstracted behind a clean guided interface.
→Integrated multi-wallet authentication — Phantom, Solflare, Backpack, Ledger with unified signing UX.
→Delivered two full marketplace revamps — improved navigation, filtering & collection browsing UX.

TechReactTypeScriptSolanaPython

07 · Let's talk inside Upwork

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