You will get Legacy System Modernization Plan

Jack T.Status: Offline
Jack T. Jack T.
4.8
Top Rated

Let a pro handle the details

Buy Web Programming Bug Fixes services from Jack, priced and ready to go.
Jack T.Status: Offline
Jack T. Jack T.
4.8
Top Rated

Let a pro handle the details

Buy Web Programming Bug Fixes services from Jack, priced and ready to go.

Project details

Is your business being held back by outdated, inefficient, and risky legacy software? You're not alone. Many successful companies find their growth stalls because their core technology can't keep up. The fear of a complex, disruptive, and expensive migration often leads to inaction, but the cost of doing nothing is even higher.

This project is your solution. We provide a safe, strategic, and comprehensive roadmap to modernize your systems with confidence. We specialize in de-risking the entire process, transforming a daunting challenge into a manageable, phased project.

Our team of senior architects does more than just recommend new technology. We dive deep into your business processes to design a future-state system that not only works better but also unlocks new efficiencies and capabilities for your team. We are experts in managing the critical transition from old to new.

We deliver a detailed, step-by-step plan that you can use to gain stakeholder buy-in, set realistic budgets, and guide the development process.

Stop letting your old technology dictate your future. Let’s build your path forward.
Programming Languages
PHP, JavaScript, Ruby/Ruby on Rails
Coding Expertise
Performance Optimization, Security, Design
What's included
Service Tiers Starter
$2,000
Standard
$4,500
Advanced
$9,000
Delivery Time 5 days 10 days 18 days
Number of Revisions
000
Bug Investigation
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Fix Documentation
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Detailed Code Comments
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Optional add-ons You can add these on the next page.
Bug Investigation (+ 2 Days)
+$1,000
Fix Documentation (+ 2 Days)
+$1,000

Frequently asked questions

4.8
40 reviews
88% Complete
13% Complete
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

SA

Sheh A.
5.00
Apr 20, 2026
Node and RoR developer

KK

Kevin K.
4.00
Mar 3, 2026
Ruby on Rails System Assistance Required

CN

Cole N.
5.00
May 2, 2025
Expert Sharetribe Marketplace Developer Needed Jack did a good job. He completed all tasks and made necessary revisions at a reasonable rate. He clearly articulated his process and deliverables.

OH

Oded H.
4.80
Feb 16, 2025
Front-End Developer (Ruby on Rails Website Redesign + Figma to Code)

PA

Patrick A.
5.00
Feb 7, 2025
Seeking (Long Term) Experienced Developer For Highload AWS App
Jack T.Status: Offline

About Jack

Jack T.Status: Offline
Operations Platforms & Full-Stack Development | Mobile | Web
100% Job Success
4.8  (40 reviews)
Ho Chi Minh City, Vietnam - 11:11 pm local time
I'm the CEO of NUS Technology, a software team of 75+ engineers based in Vietnam, working with international clients since 2013. Unlike typical dev shops that deliver isolated features, we design and build the core systems that power day-to-day operations: internal platforms, integrations, and automation workflows, and we stay accountable for outcomes, not just output.

Over the past 12+ years we've worked closely with founders and operators (especially in Australia, the US, and Europe) on products where performance, maintainability, and business alignment truly matter.

WHY CLIENTS CHOOSE US

- Top Rated Agency on Upwork, 98%+ Job Success Score since 2013, 4.8/5.0 average rating
- $10M+ in project value delivered
- Long-term partnerships: many clients have worked with us for 5-10+ years
- 75+ co-located engineers: 60+ web developers, 15+ mobile developers, plus QA, BAs, PMs, and designers

WHAT WE DO BEST

Operations platforms (our core)
We design the central system that orchestrates bookings, payments, teams, hardware, and compliance into one seamless operation: software that bends to your process, not the other way around. We handle the integrations Zapier can't and SaaS avoids: deep data synchronization, legacy platforms, and compliance-grade audit trails where failure isn't an option.

Web development
- Ruby on Rails (deep expertise): production-grade apps, clean architecture, performance optimization, complex domains and high-traffic systems
- Frontend: React, Next.js, Vue.js, TypeScript, Tailwind CSS
- Node.js, PHP (Laravel, Symfony, WordPress), Python (Django, Flask)
- RESTful and GraphQL APIs

Mobile development
- Native (Swift, Kotlin) and cross-platform (React Native, Flutter) for iOS and Android

Cloud & DevOps
- Scalable infrastructure on AWS (EC2, RDS, S3, Lambda, CloudFront), Google Cloud, Heroku
- CI/CD (GitHub Actions, GitLab CI, CircleCI), Docker, monitoring and performance tuning
- Cost-efficiency and scalability built in from early stages

eCommerce
- Shopify (custom themes, public/private apps, API integrations, migrations)
- Spree Commerce, Saleor, and custom platforms when off-the-shelf doesn't fit

HOW WE WORK

- Outcome-driven: we focus on business results, not just shipping code
- Ownership mindset: we act like a technical co-founder, not a contractor
- Proactive: we surface technical debt and scaling bottlenecks before they escalate
- Clear communication across time zones (we're GMT+7, with strong overlap for AU and partial US/EU)
- Long-term thinking: we build systems that scale, not quick hacks that break later

HOW YOU CAN WORK WITH US

1. Operations platform development: internal platforms, SaaS, workflow automation, complex integrations, replacing fragmented tools with a unified system
2. Dedicated engineering teams: backend, frontend, mobile, and QA engineers as an extended team, often for multiple years
3. Product development & MVPs: from idea to launch, fast but not fragile

If you're looking for a team that thinks beyond code, challenges assumptions, and builds something that actually lasts, let's talk.

Steps for completing your project

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

Delivery time starts when Jack receives requirements from you.

Jack works on your project following the steps below.

Revisions may occur after the delivery date.

Deep Dive: System & Business Process Review

Our process begins with a workshop to thoroughly understand your existing system, data, and the business processes it supports. We map out its strengths, weaknesses, and critical functions to ensure a smooth transition.

Risk Assessment & Modernization Strategy

We analyze various modernization approaches (e.g., full rewrite vs. phased migration) and present a strategy that minimizes risk and disruption to your current operations. The goal is a safe and predictable path forward for your business.

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