01capabilities
Idea to production, one engineer
Stockus takes projects from idea to production alone, covering strategy, design, engineering, deployment and ongoing iteration. The work spans five main areas.
- ai.agents
AI agents and automation
Designs and runs production AI systems: voice agents that answer real customer calls, an AI review responder covering four business locations, multi-agent workflows, and custom Model Context Protocol (MCP) servers that let AI take real actions, such as turning a meal plan into a placed grocery order.
- voice agents
- multi-agent
- mcp servers
- tool use
- platforms
Custom software and marketplaces
Builds full-stack web platforms end to end, including two live marketplaces: one for freight logistics that matches shippers with carriers, and one for peer-to-peer car rental. The work covers accounts, bookings, card and direct ACH payments, databases and automated test suites.
- marketplaces
- payments
- ach
- test suites
- mobile
Mobile apps
Ships native iOS and cross-platform mobile apps to the major app stores, including a live AI nutrition tracker that uses computer vision to log meals from photos.
- native ios
- cross-platform
- computer vision
- growth
Digital growth and marketing
Takes traditional businesses online and brings in customers through social media advertising, digital marketing campaigns, websites, SEO and analytics, then builds the systems that handle the growth.
- paid social
- seo
- analytics
- integrations
Business systems and integrations
Connects the tools a business already runs on, including accounting software, property-management systems, payment terminals and SMS, and automates the manual work between them: billing, reconciliation, onboarding, scheduling and reporting dashboards.
- accounting
- billing
- reconciliation
- dashboards
02career
From the sales floor to the stack
early life
Early life
Stockus was born in Kaunas, Lithuania, and immigrated to the United States at age 10. Stockus is a United States citizen and is based in Central Florida.
2008 – 2014
Retail career
From 2008 to 2014, Stockus worked for a national health and wellness retailer. Over six years, Stockus held five progressively senior roles: sales associate, key holder, assistant store manager, store manager and market manager. As market manager, Stockus was responsible for the profit and loss of multiple stores.
According to Stockus, this period was a lesson in how businesses actually operate and how to earn the trust of the people doing the work, and it became the foundation of a later approach to engineering.
2016 – present
BigDevelop
Stockus began building software professionally in 2016 and in 2017 founded BigDevelop Tech & Media, a custom software and AI engineering firm. Stockus personally leads each engagement, from the first discovery conversation through prototype, production and iteration.
focus areas at BigDevelop
Analog-to-digital transformation
Much of Stockus's work focuses on modernizing traditional, offline businesses. Stockus builds their digital presence through social media advertising, digital marketing campaigns and websites, then builds the systems they need to handle the resulting growth, including payments, scheduling, AI phone agents and reporting dashboards.
Health technology
Stockus built a live AI nutrition-tracking iOS app that uses computer vision to turn meal photos into calorie and macronutrient logs. Stockus also built a voice-controlled accounting interface for vision-impaired users: spoken questions drive an AI agent that runs the accounting software and answers out loud.
Commercial operations
Stockus serves as the embedded engineering partner to a multi-venue commercial operator that runs a food truck park with more than 100 vendors, a 200-booth market and gift retail. Systems built there include automated utility re-billing, vendor parking check-in, employee onboarding, an AI review responder covering four locations, and a 225-booth gamified treasure hunt with a companion mobile app.
03approach
Forward-deployed engineering
Stockus describes the work as forward-deployed engineering: working directly alongside the people who will use a tool, iterating with them face to face, and moving from an ambiguous idea to production quickly. The approach values plain communication and full ownership of a project, and emphasizes measurable business outcomes over features.
stage 1embed
Work on-site
alongside the people who use it
stage 2prototype
Prototype
working build within days
stage 3production
Production
software used every day
stage 4iterate
Iterate
face to face, on real feedback
04systems shipped
Kinds of systems in production
| system | domain | what it does |
|---|---|---|
| Computer-vision nutrition tracking | Consumer health | Live iOS app; computer vision logs calories and macros from a photo of a meal. |
| Voice-driven accounting | Accessibility | Lets vision-impaired users run their accounting by voice, through an AI agent that answers out loud. |
| AI voice agents | Customer service | Four production AI phone agents answering inbound calls for retail, food hall, wellness and agency lines. |
| Two-sided logistics marketplace | Logistics | Live marketplace matching shippers and carriers, with payments and a 79-test automated suite. |
| Peer-to-peer rental marketplace | Mobility | Live web app plus native iOS app on a shared backend: listings, bookings, host and renter flows. |
| ACH payment infrastructure | Financial services | Replaced card processing for a hospitality client, saving about $100,000 a year. |
| GAAP-to-IFRS conversion | Financial services | Financial-statement conversion platform with audit-ready output (about $85,000 engagement). |
| Behavior-change app | Wellness | iOS app for identity-based habit change, with self-assessment and guided daily practice. |
| Venue operations systems | Commercial operations | Billing automation, vendor check-in, onboarding and a 225-booth treasure hunt app for a 300+ vendor operation. |
05stack
Technical stack
- ai and llms
- Claude API
- OpenAI
- Gemini
- multi-agent systems
- tool use
- RAG
- MCP servers
- Vapi
- ElevenLabs
- languages
- Python
- TypeScript
- JavaScript
- Swift
- Dart
- SQL
- web and mobile
- React
- Next.js
- React Native
- SwiftUI
- Flutter
- backend and infrastructure
- Node.js
- FastAPI
- PostgreSQL
- Supabase
- Neon
- AWS
- Vercel
- Stripe
- Twilio
- marketing
- Paid social advertising
- digital marketing
- SEO
- GA4 analytics
06links