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You will get a clear technical roadmap and strategy session for your app idea
Rising Talent
Rising Talent
Project details
You have a business idea that lives in your head. You know the problem it solves and who it's for - but you don't know how to build it, what it would cost, whether your approach is the right one, or what a developer is going to tell you when you bring it to them.
That uncertainty is expensive. Founders who skip this step hire developers without clear direction, build the wrong thing first, and spend months fixing decisions that could have been made in an hour.
This session is that hour. I've built full-stack SaaS products, AI-powered tools, and complex business applications from scratch. I know what's simple, what's hard, what's been built before, and what will actually convert in the market. I'll look at your idea the same way I would before building it myself - and tell you exactly what I see.
You leave with a clear picture of how your product can be built, what the smart approach is, where similar products typically fail, and what to prioritize first. Not a vague conversation - a written roadmap you can act on the same day.
That uncertainty is expensive. Founders who skip this step hire developers without clear direction, build the wrong thing first, and spend months fixing decisions that could have been made in an hour.
This session is that hour. I've built full-stack SaaS products, AI-powered tools, and complex business applications from scratch. I know what's simple, what's hard, what's been built before, and what will actually convert in the market. I'll look at your idea the same way I would before building it myself - and tell you exactly what I see.
You leave with a clear picture of how your product can be built, what the smart approach is, where similar products typically fail, and what to prioritize first. Not a vague conversation - a written roadmap you can act on the same day.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$99
|
Standard
$199
|
Advanced
$299
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 1 day |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Frequently asked questions
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PA
Philip A.
Jun 25, 2026
AI Fitness Accountability App MVP (Framer + OpenAI)
Danielius has been an absolute rockstar to work with! He's a strong engineer, communicates well, and genuinely cares about building the right product rather than just ticking off tasks.
We're building an AI fitness coach, which has involved a lot of iteration, testing, and refining complex user flows. Throughout the project, he's been incredibly responsive to feedback, quick to fix issues, and willing to discuss ideas and challenge assumptions when it improves the product. The turnaround time has been consistently impressive.
What I've appreciated most is that he's approached the project like a true collaborator, not just a contractor. He's been proactive about suggesting practical solutions and improving the overall architecture rather than applying short-term patches.
I'd happily recommend Danielius to anyone looking for a talented, reliable developer who takes ownership of his work. I wouldn't hesitate to hire him again!
We're building an AI fitness coach, which has involved a lot of iteration, testing, and refining complex user flows. Throughout the project, he's been incredibly responsive to feedback, quick to fix issues, and willing to discuss ideas and challenge assumptions when it improves the product. The turnaround time has been consistently impressive.
What I've appreciated most is that he's approached the project like a true collaborator, not just a contractor. He's been proactive about suggesting practical solutions and improving the overall architecture rather than applying short-term patches.
I'd happily recommend Danielius to anyone looking for a talented, reliable developer who takes ownership of his work. I wouldn't hesitate to hire him again!
SD
Sean D.
May 19, 2026
Build Gamified Guitar Learning Web App (Membership + Interactive Map)
Absolutely blown away by Danielius’ work. He’s a total wizard when it comes to web design and development. The final website exceeded my expectations in every way.
He went above and beyond throughout the entire project, communicated clearly, worked quickly, and constantly brought great ideas to the table that improved the site far beyond what I originally envisioned.
Couldn’t be happier with the result and I would work with him again in a heartbeat. Highly recommended.
He went above and beyond throughout the entire project, communicated clearly, worked quickly, and constantly brought great ideas to the table that improved the site far beyond what I originally envisioned.
Couldn’t be happier with the result and I would work with him again in a heartbeat. Highly recommended.
RK
Rakesh K.
Apr 23, 2026
Build an AI-Powered Wellness Platform (Agent-Based) + Marketplace (MVP)
Working with Danielius was one of the best decisions I made for my startup. He built a mobile wellness app from the ground up and delivered beyond every expectation — on time, on scope, and then some.
What sets him apart isn’t just technical skill, it’s his honesty and integrity. He told me what was realistic, flagged issues early, and designed the solutions in a way that was just very impressive . In a space full of freelancers who disappear after payment, he stayed engaged, communicated clearly, and treated my project like it was his own.
His innovation showed up in ways I didn’t ask for — he brought ideas to the table that made the product genuinely better. Efficient, sharp, and trustworthy from day one.
If my budget allowed, I would hire him full-time without hesitation. If you’re building something real and need a developer who will deliver what he promises and then go further — hire him. You won’t regret it.
What sets him apart isn’t just technical skill, it’s his honesty and integrity. He told me what was realistic, flagged issues early, and designed the solutions in a way that was just very impressive . In a space full of freelancers who disappear after payment, he stayed engaged, communicated clearly, and treated my project like it was his own.
His innovation showed up in ways I didn’t ask for — he brought ideas to the table that made the product genuinely better. Efficient, sharp, and trustworthy from day one.
If my budget allowed, I would hire him full-time without hesitation. If you’re building something real and need a developer who will deliver what he promises and then go further — hire him. You won’t regret it.
About Danielius
Senior AI Engineer & Architect | iOS & Web Apps | SwiftUI + Next.js
100%
Job Success
Vilnius, Lithuania - 10:41 am local time
Live in production
ooddle - AI wellness coach with a streaming LLM chat. Live on the US App Store and web (native iOS + Next.js + Postgres)
Guitartopia - gamified membership PWA for guitar learners (Next.js, video pipeline, Stripe subscriptions)
TrademarkLens - multi-locale SaaS that searches 140+ trademark registries with AI viability scoring
StorePrompts - secure multi-tenant prompt library with subscription billing
Custom Odoo ERP for a Lithuania-based manufacturer - finance automation, vendor-bill intake from email, auto-reconciliation, pro-forma invoicing with SAF-T exclusion, Lithuanian statutory XML (SAM, GPM312, KS-02)
What I do well
AI integration: LLM APIs, streaming chat, intelligent workflows, scoring systems
Native iOS: Swift + SwiftUI apps that pass Apple review on the first submission
Next.js SaaS: multi-tenant, role-based access, subscription billing, AI integration
Custom Odoo ERP modules when a SaaS needs to integrate with a manufacturer's existing systems
How I work
End-to-end ownership: design, code, deploy, operate
Architecture and code your team can take over without a headache
Stack
AI: DeepInfra, OpenAI-compatible APIs, streaming LLM chat
Mobile: Swift, SwiftUI, StoreKit 2
Frontend: Next.js, React, TypeScript, Tailwind CSS
Backend: Node.js (TypeScript), Python (FastAPI, Django, Odoo)
Database: PostgreSQL (Supabase), Redis
Auth & Payments: Supabase Auth, NextAuth, Stripe, Sign in with Apple
DevOps: Docker, GitHub Actions CI/CD, self-hosted Linux
Most engineers hand you code. I hand you a product - built around the actual problem, ready for real users, and written so your team can take it over without a headache.
Steps for completing your project
After purchasing the project, send requirements so Danielius can start the project.
Delivery time starts when Danielius receives requirements from you.
Danielius works on your project following the steps below.
Revisions may occur after the delivery date.
Idea Review Before the Call
I go through everything you submitted before we get on the call so we skip the basics and go straight into what matters.
Strategy Call
We walk through your idea together - how it can be built, what approach makes sense, what risks to watch for, and what changes would make it more competitive. Plain English, no jargon.