We engineer the
software of what's
coming next.

Expert-Vetted · Top 1% Engineers Worldwide. O2M is a senior collective shipping SaaS platforms, AI systems and cloud infrastructure for startups and enterprises, without the agency overhead.

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Statistics & Professional Achievements

5.0★

Average rating

50+

Satisfied clients

<24h

Reply time

$7.4m+

Delivered worldwide

105k+

Engineering hours

40+

Years combined experience

100%

Job success score

Top 1%

Expert-Vetted globally

Top Rated Plus

Upwork's highest tier of freelancers

Full Stack Expert

Specialized in modern web technologies

Client Satisfaction

100% positive feedback rate

Services

Engineering services that compound your team.

Six focused practices, one senior team. Engage us for a single sprint or as your long-term technical partner.

Full-Stack Web & App

Production SaaS platforms, dashboards, marketplaces and APIs. We architect for scale from day one.

→ React, Next.js, Vue, Angular
→ Node, Nest, FastAPI, Django
→ React Native & Flutter

AI & Machine Learning

From RAG agents to computer vision pipelines — we ship AI features that actually move metrics.

→ LangChain, LlamaIndex, Hugging Face
→ PyTorch, TensorFlow, CUDA
→ OCR, NLP, recommendation engines

Cloud & DevOps

AWS-first cloud architecture with Terraform, EKS and zero-downtime deploys baked in.

→ EC2, ECS, Lambda, RDS, S3
→ Terraform, CDK, CloudFormation
→ GitHub Actions, GitLab, Jenkins

AI-Native Automation

Compound your team with intelligent workflows — built on Lovable, n8n, Make and custom agents.

→ Internal tools & dashboards
→ Workflow + LLM orchestration
→ MLOps & data pipelines

Database Engineering

Schema design, query optimisation, sharding and migrations for systems under real load.

→ PostgreSQL, MySQL, MongoDB
→ Redis, DynamoDB, Firebase
→ Replication, partitioning, backups

CMS & eCommerce

Headless storefronts and content systems integrated with payments, search and analytics.

→ Shopify, WooCommerce
→ WordPress, Laravel
→ Stripe, payment integrations

Real systems, real outcomes.

A selection of recent engagements across SaaS, healthcare, AI, video and EdTech — shipped end-to-end.

“Justin did a great job. He learned a custom framework and figured out some pretty obscure issues. Would definitely recommend!”

Ruby on Rails · AWS

Full-Stack RoR Developer for Online Buyback Website

RubyRailsAWSGCPMySQLAPI

“Justin is a fantastic developer. He joined on a development project with an incredibly tight deadline and little room for error. He absolutely knocked the job out of the park - jumping in immediately and becoming productive very quickly. He quickly started knocking out tasks and becoming a large contributing member of our development team. He has great communication and is an absolute pleasure to work with. I would 100% recommend him for any project, especially anything dealing with front-end or React. He's worth the money.”

Healthcare · SaaS

Software Engineer in Healthcare Product Development

ReactASP.NETAngularNode.jsTypeScriptAzure

“Great work building our video streaming!”

Video · AWS

HD Video Streaming Platform

PythonAWS LambdaS3Node.jsVideo Streaming

“Justin was a pleasure to work with. We used him to as burst capacity to help us catch up on a project that was behind schedule. He diligently worked on a variety of tasks mostly related to Dialog Flow in Google Cloud. He was always professional in his interactions and strictly adhered to our policies and processes. We would not hesitate to use him again for another project if the need arises in the future.”

AI · Conversational

Conversational AI Chatbot for Digital Engagement

PythonFlaskVue.jsDockerKubernetesDialogflow

“I would highly recommend this freelancer and will use him again.”

Training · SaaS

Command Tactical Training

ReactNext.jsNode.jsDynamoDBAWS

“Great work, got us to the point we needed to get to. Would recommend to anyone needing a quality developer.”

Fintech · Real-Time Data

Prediction Markets Data Platform

TypeScriptReact / Next.jsReal-Time DataWebSocketsData VisualizationAPI Integration

“Justin is an excellent developer and freelancer. Smart, fast, and easy to work with - we highly recommend him!”

Health & Wellness · E-Commerce

High-Converting Supplement Sales Funnel

Landing PagesCheckout FunnelKonnektive CRMWooCommerceCROResponsive Design

“I hired Justin as a full-stack developer to help get our company website up and running, and he delivered exactly what we needed. He was hardworking, communicative, and reliable throughout the project. He met deadlines, followed through on all agreed-upon tasks, and made the process smooth from start to finish. I'd gladly work with him again and recommend him to others looking for a dependable developer.”

Healthcare SaaS · AI Automation

Clinical Hours Tracking SaaS Platform

Next.jsTypeScriptSupabaseAI Document ParsingReliableClear Communicator

“Our experience working with Justin was great. He met or exceeded all of our deadlines in a tight window and was consistently available when we needed him. The quality of his work was excellent, consistently meeting the requirements of our project.”

Government · Messaging Automation

Two-Way Recall Messaging System

Twilio APIAppSheetGoogle SheetsAutomationReliableCommitted to Quality

“Justin has a fantastic skill set and work ethic. He will complete very complex tasks in a timely manner while communicating properly, providing the peace of mind we we're hoping to find when hiring for this position. Could not ask for more.”

.NET · Enterprise Web Development

Full-Stack ASP.NET Project Development

ASP.NETC#Full-Stack DevelopmentProject ScopingReliableClear Communicator

“Justin has been an exceptional developer and went above and beyond the original tasks we assigned him. He was extremely valuable for the development of our app from start to finish and I could not recommend him highly enough to anyone looking for a full stack developer. It was a pleasure working with him and I hope to do so again soon!”

Sports Betting · Real-Time Notifications

Real-Time Sports Betting Application

ReactJavaScriptAWSSportradar APICommitted to QualityAccountable for Outcomes

“Looking forward to working with Justin again on our next project!”

Google Cloud · Conversational AI

GCP Chatbot Implementation for COVID Initiatives

Google CloudDialogflowChatbotsGCP InfrastructureClient HandoffCustom Integrations

“Justin and I worked very well together. He was extremely communicative, professional, and possessed a enjoyable disposition. I would absolutely suggest him to anyone looking for web development work.”

WordPress · Web Development

On-Call WordPress & Web Development Support

WordPressCMS DevelopmentE-CommerceWeb DevelopmentClear CommunicatorProfessional

“Justin has been an absolute pleasure to work with. Capable, responsive and get the work done.”

Media & Publishing · Headless CMS

Next.js Website Backlog Acceleration

Next.jsNode.jsContentfulHeadless CMSCollaborativeClear Communicator

“Our client requested that multiple live spreadsheets be added to their website with export functionality. Justin came to the rescue here, building out the spreadsheets and all the required functionality. His knowledge of Wordpress allowed for novel solutions to any issues we encountered (as this site was originally built by a third party). Along with his skills as a developer, Justin was also extremely communicative which made the process that much better. He would reply to messages promptly and was also very proactive to ensure the work was meeting expectations. Overall, Justin is a talented developer with great business/client relation sense, willing to go the extra mile. You really can't ask for more than that. A++”

WordPress · Member Portal

Live Spreadsheet Tools for Member Accounts

WordPressMember PortalLive SpreadsheetsExport FunctionalityUser AccountsClear Communicator

“Another great experience with Justin, worked fast, communicated well and handled the issues quickly and properly.”

Angular · PHP Web Development

Full-Stack Angular & PHP Development Support

AngularPHPFrontend DevelopmentBackend DevelopmentTask-Based SupportClear Communicator

“Justin was very responsive and prompt for our project. We could not have asked for more!”

Python · Data Automation

Automated Website Data Transfer Tool

PythonData ScrapingExcel AutomationData TransferClear CommunicatorReliable

“Justin was a fantastic addition to our team. He communicated throughout all stages of the project, as well as conveyed any and all issues or questions so they could be quickly addressed and fixed. He was extremely efficient with time and the quality of work was superb. We look forward to working with him in the future on additional updates and changes.”

No-Code SaaS · Bubble Development

Bubble App Feature Development & Optimization

Bubble.ioFeature DevelopmentApp UpdatesSolution OrientedCommitted to QualityReliable

“Quick response and perfect delivery. High recommended!”

Python · Backend Automation

Batch File Processing & Number Conversion Script

PythonBackend DevelopmentScript AutomationFile ProcessingData ConversionReliable

“Justin did a great job for us programming in Javascript in our IDX Home Finder and translating that to our real estate website. He worked quickly and efficiently; he communicated well along the way, and he achieved all our desired outcomes for this project. I would definitely recommend hiring him.”

Real Estate · IDX Search Customization