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You will get a SaaS backend development

Dmitrii Z.Status: Offline
Dmitrii Z. Dmitrii Z.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Dmitrii, priced and ready to go.
Dmitrii Z.Status: Offline
Dmitrii Z. Dmitrii Z.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Dmitrii, priced and ready to go.

Project details

Are you building a SaaS product and need a scalable, production-ready backend? ⚙️

I design and develop backend systems using Node.js and Python, structuring APIs, authentication flows, role-based access control, and scalable database schemas. Whether you’re launching an MVP or scaling an existing platform, I focus on stability, maintainability, and long-term growth 🚀.

Let’s build a SaaS backend that is stable, secure, and ready to scale.
Message me before placing an order to align on your architecture and goals.

Buzz: saas backend development, saas backend developer, backend development for saas, saas backend architecture development, scalable saas backend development, saas backend api development, saas backend infrastructure development, saas backend system development, saas backend engineering, saas backend development expert, saas backend development service, nodejs saas backend development, python saas backend development, saas backend microservices development, saas backend database development, saas backend platform development, secure saas backend development, production ready saas backend development, saas backend development consulting, professional saas development
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$50
Standard
$100
Advanced
$200
Delivery Time 14 days 30 days 60 days
Number of Revisions
012
Number of Pages
555
Design Customization
-
-
Content Upload
Responsive Design
Source Code
-
5.0
42 reviews
100% Complete
(42)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

GH

Griff H.
5.00
May 3, 2026
Framer Dev for Design-to-Launch Site Builds Dmitrii was a good person to work with. They completed the work and were willing to address revisions as necessary

AS

Arya S.
5.00
Mar 27, 2026
Salesforce APEX and LWC Developer for SFDC

MM

Martin M.
4.60
Aug 13, 2025
Senior Back end developer for a YC backed fintech startup

AR

Alexander R.
5.00
Jun 15, 2025
Backend Developer (Node.js/Python) with GPT-4 API Experience for Baby Sleep App Perfect communication, delivered on time, and the result was outstanding. I can't recommend this team highly enough!

AM

Afshin M.
5.00
Jan 21, 2025
Experienced .NET MAUI Mobile Application Developer I wanted to take a moment to commend you for the exceptional work you’ve done on this project. Your dedication, attention to detail, and innovative approach have truly made a difference.
The results you’ve delivered have not only exceeded expectations but also showcased your ability to tackle challenges with professionalism and creativity. Your contributions are greatly appreciated and have had a positive impact on our project.
Dmitrii Z.Status: Offline

About Dmitrii

Dmitrii Z.Status: Offline
SaaS Full Stack Developer | Salesforce Development Web Dev CRM | PM
100% Job Success
5.0  (42 reviews)
Valencia, Spain - 1:35 pm local time
Top Rated Plus | 100% Job Success Score

Full Stack Development & Salesforce Architecture, From MVP to Production at Scale
If your project demands a digital product that performs under real load, integrates cleanly with Salesforce, and won't require a costly rebuild in a year, you're in the right place.
As a Full Stack Developer working alongside a certified Salesforce Developer, our team combines senior engineering (React, Node.js, Python) with 9x certified Salesforce architecture to deliver complete, production-ready business systems. We don't hand off separate pieces, we build the entire stack as one cohesive solution.

Agency Snapshot
10+ years in production. 250+ projects shipped. 15,000+ development hours.
As your Full Stack Developer, I own the full product lifecycle, from frontend UX and component architecture to backend services, cloud infrastructure, and real-time CRM synchronization handled by our Salesforce Developer. Every decision is made with your business goals, not just technical preferences, in mind.

Typical client outcomes
45-65% faster load times and page rendering, even on legacy codebases that were actively bleeding users before the rebuild
30-50% fewer manual operations through targeted automation, replacing repetitive workflows with background jobs and smart triggers
40% faster reporting, data sync, and API response, through query optimization, caching layers, and efficient pipeline architecture
35-50% reduction in post-launch bugs and technical debt, since clean architecture at the start costs less than emergency fixes later
Platforms built to handle 10x traffic growth without structural rewrites

Core Services

Full Stack Web, Mobile & SaaS Development
As a Full Stack Developer I build React, TypeScript, JavaScript frontends with clean component architecture and optimized state management. Backends in Python (Django, FastAPI) and Node.js, with RESTful and GraphQL APIs designed for scale. SaaS platforms, fintech dashboards, transaction systems, admin panels, and SEO-optimized landing pages. Cross-platform mobile with React Native, sharing logic with your existing web ecosystem. AI/LLM integration: GPT-powered dashboards, intelligent UI flows, chatbots, and automated analytics.
Salesforce Developer Services & Enterprise Integration
Our Salesforce Developer handles custom Apex logic, advanced Flow automation, and high-performance Lightning Web Components. Secure REST/SOAP and OAuth2 integrations keep your Full Stack Developer-built web apps in real-time sync with Salesforce. Experience Cloud portals with custom frontend UX backed by Salesforce data. Large Data Volume (LDV) architecture: indexing, archiving, and sharing model configuration.
DevOps, Security & Cloud Infrastructure
Scalable, secure cloud environments on AWS, GCP, and Heroku. Automated CI/CD pipelines via Docker and GitHub Actions (web) and SFDX/Copado (Salesforce).

How We Work
Discovery: we define goals, user flows, and constraints before writing a line of code.
Architecture: database models, API layers, and service boundaries designed upfront by your Full Stack Developer.
Development: Full Stack Developer and Salesforce Developer teams work in sync; your CRM and web app behave as a single system.
QA & Performance: stability, security compliance, and API uptime validated under peak load.
Post-Launch: continuous optimization; most clients see 35-45% efficiency gains within 90 days.

Production Track Record
99.98% API & integration uptime
Up to 2.5x system throughput under traffic surges
52% reduction in manual data handling via automation
Up to 40% savings on cloud infrastructure and technical debt

Industries
Healthcare, FinTech, SaaS & Enterprise B2B, eCommerce, AI, Data & EdTech. As a Full Stack Developer I have worked across all these industries with real production systems behind each one. SaaS is my primary focus with 40+ platforms shipped, from early-stage MVPs to enterprise systems with complex billing and multi-tenant architecture. In Healthcare I have delivered 20+ products focused on data privacy and compliance. FinTech accounts for 15+ projects including payment systems and transaction monitoring, several built alongside our Salesforce Developer for CRM-linked billing. B2B solutions account for 30+ dashboards, portals, and automation projects. EdTech accounts for 20+ builds, from LMS platforms to learning tools. I've also delivered 10+ eCommerce platforms, 10+ Logistics solutions, and 25+ Real Estate projects.

Leadership & Ownership
I lead our Full Stack Developer and Salesforce Developer team, handling project management myself so there's no gap between coding, CRM integration, and delivery. 55+ long-term clients. 100% Job Success Score. I take personal ownership of your architecture, no gaps between frontend, backend, and CRM.

Ready to discuss your project? Let's schedule a short discovery call.

Steps for completing your project

After purchasing the project, send requirements so Dmitrii can start the project.

Delivery time starts when Dmitrii receives requirements from you.

Dmitrii works on your project following the steps below.

Revisions may occur after the delivery date.

Discovery & Requirements Review

Client shares project details, goals, scope, and any existing materials. I review everything and align on expectations, timeline, and deliverables.

Review & Revisions

Client reviews the work. I apply agreed revisions and fine-tune the final output.

Review the work, release payment, and leave feedback to Dmitrii.