Custom Software Development Services
Tailor-made software solutions for specific business workflows. 100% source code handover, complete data security and long-term support as your business grows.
TRUSTED BY LEADING CORPORATIONS AND BRANDS IN VIETNAM
Why do 85% of Packaged Software (SaaS) Solutions Fail When Applied in a Business?
Rigid processes, escalating subscription costs and the risk of data leaks leave businesses stuck. This is how Sudo unlocks the power of your operations.
Challenges
Rigid processes
Huge hidden costs
Insecure data
Unable to scale
Solutions
100% tailor-made to match your business's specific workflows exactly
Every business's competitive advantage lies in its own operating processes and management culture. Forcing the team to change their work habits to fit the rigid templates of packaged software (SaaS) often leads to internal resistance and failure rates of up to 85%.
At Sudo, we send business analysts (BA) to survey each department in person and listen to every operational "pain point" in order to tailor software that solves exactly your problem. Every form, multi-level approval flow, bonus logic, warehouse process and document flow is precisely optimised so all staff can adapt easily from day one of go-live.
100% source code handover & permanent ownership, no recurring subscription fees
The SaaS (Software as a Service) subscription model looks cheap at first, but is in fact a "huge hidden cost trap". The more branches and staff you add, the more the per-user/month subscription fees multiply every year, while the business owns no technology assets.
With Sudo's custom software development, the business invests once and owns the entire software asset forever. The system has unlimited user accounts (Unlimited Users) and no monthly licence maintenance fees. You have full control over infrastructure and future development budgets.
Full control of the database and multi-layer OWASP security
Customer data, cost prices, production formulas and cash flow are the vital "heart" of a business. Storing all sensitive business data on a third party's shared servers risks leaking information to competitors or losing access entirely in a service dispute.
Sudo deploys the software directly on your business's own server infrastructure (Private Cloud or On-Premise). We strictly follow OWASP information security standards, use two-way data encryption (AES-256), fine-grained permissions (RBAC) down to each button, and audit logs of every action, keeping your digital assets completely secure.
Flexible open architecture, hardware connections & unlimited multi-system integration
One of the biggest barriers of SaaS software is its closed nature: the business cannot integrate with factory peripherals or connect to internal accounting software, and customisation requests are refused or very expensive.
Software developed by Sudo is built on Clean Architecture and an open API-First standard. The system easily connects both ways with existing ERP and CRM systems and works perfectly with hardware: barcode scanners, label printers, electronic scales, POS terminals, industrial IoT devices and bank payment gateways, keeping data flowing without delay.
Featured software projects by Sudo
Explore ERP management systems, business portals and custom software solutions running reliably for leading partners.
- MobileCity Retail System
- Baby Cua Toi E-commerce
- Hoa Phat Group Corporate Portal
- CellphoneS Technology Retail Chain
- Chanh Tuoi Review Consumer Community
- Karofi Smart IoT Water Purifiers
- VNPAY QR Payment Gateway
- Bukkigo Europe Digital Services Platform
3 Cooperation Models & Estimated Budget Frameworks
Custom software development does not use fixed packages. Sudo offers 3 flexible cooperation models that help businesses tightly control their budget and optimise return on investment.
All-inclusive Project Development
Up to 150.000.000đ • All-inclusive by scope
Small and medium internal management software, Mini CRM, timekeeping/payroll software, warranty and customer service management.
- Clearly defined Scope of Work: Business analysis and a detailed SRS specification agreed before signing the contract.
- Schedule & budget commitment: On-time delivery with no costs beyond the signed scope.
- Turnkey handover: Hands-on training for operating staff and 100% clean full source code handover.
- Permanent ownership (Unlimited Users): No monthly per-user licence subscription fees.
- 12-month technical warranty: With a support team that fixes operational issues directly 24/7.
In-depth Business System
On-site business analysis by BA experts
Chain ERP systems, retail chain management, B2B marketplaces, multi-stage manufacturing plant management software.
- On-site current-state survey: Specialist BAs work directly at factories and branches to standardise business flows.
- Microservices architecture design: Flexible modules that scale easily and handle millions of transactions.
- Multi-system & hardware integration: Seamless connection with barcode scanners, receipt printers, electronic scales, IoT and existing ERP/CRM.
- Multi-layer OWASP security: Fine-grained permissions (RBAC), two-way data encryption and secure Audit logs.
- Solution architect by your side: A Solution Architect personally designs the solution and provides long-term warranty.
Dedicated Engineering Team
Billed per Man-month • Flexible scaling
Businesses that need to speed up a project or want a long-term IT team without recruiting and training in-house.
- Full-time dedicated engineers: All roles (Backend, Frontend, Mobile, QA/QC, DevOps) working directly for you.
- Coordinated by Sudo: International-standard Agile/Scrum process with transparent weekly progress reports.
- Save 50% on hiring costs: No recruitment, staff benefits, equipment or office costs.
- Flexible scale (Scale-up/down): Easily increase or decrease the number of engineers at each project stage.
- 100% security & intellectual property: Strict NDA and full source code handed over as your property.
A start-up, or need an MVP software version to validate the market within 30-45 days?
Try the Rapid Software MVP package — cost-optimised, fast delivery and ready to scale.
Ability to solve business problems by industry
Every industry has its own operational problems and business bottlenecks. Sudo delivers standardised custom software solutions that help businesses break through in performance.
Retail & Chains (Retail/FMCG)
Retail & Chains (Retail/FMCG)
POS sales software, real-time inventory management, omnichannel online & offline sync, flexible promotion management and automated customer care.
Manufacturing & Operations
Manufacturing & Operations
Production order management, bill of materials and material loss (BOM), real-time workshop progress monitoring and preventive equipment maintenance.
Services & Healthcare/Spa (Clinic)
Services & Healthcare/Spa (Clinic)
Smart booking by time slot and doctor/technician, Electronic Medical Records (EMR), treatment course management and automated multi-channel customer care CRM.
Real Estate & Construction
Real Estate & Construction
Real-time inventory management (reservations/unit locking), cash flow tables and automatic instalment schedules, broker commission and construction progress management.
Finance & Fintech
Finance & Fintech
Application appraisal, credit risk management, cash flow reconciliation and multi-layer transaction security to international financial safety standards.
Education & Training (EdTech)
Education & Training (EdTech)
Student management and attendance, smart timetabling, internal e-Learning portal, multiple-choice exams and copyright protection for digital lessons.
Travel, Restaurants & Hotels
Travel, Restaurants & Hotels
Property Management System (PMS), real-time table and order management, package tour management, e-invoice integration and OTA channel sync.
Logistics & Transport (TMS)
Logistics & Transport (TMS)
Automatic fleet and route dispatching, real-time GPS waybill tracking, automatic shipping rate calculation and multi-site warehouse management.
Technical standards of a professional software company
Software built by Sudo is not an interface assembled from ready-made templates. We create systems on an international-standard open architecture with multi-layer security and automated testing, ready to scale reliably with your business.
Clean Architecture & Microservices
Clear separation of independent data and business layers, so the system handles high load and scales easily as the business grows without affecting the whole system.
- Clean Architecture & Microservices: Clear separation, easy feature upgrades without affecting the whole system.
- High Concurrency: Automatic load balancing, handling tens of thousands of transactions simultaneously with response times under 500ms.
- In-depth database optimisation: Well-designed indexing, Multi-layer Caching (Redis) and ultra-fast queries over millions of records.
- Standardised API-First architecture: A high-speed API Gateway ready for two-way connections with every satellite system and mobile app.
100% Source Code & Database handover
The business fully owns its digital assets, completely eliminating the risk of vendor lock-in, with no unreasonable licence fees whatsoever.
- 100% Source Code & Database handover: The business fully owns its digital assets with no vendor lock-in.
- Unlimited Users: Permanent ownership with no monthly per-user subscription fees.
- Git Repository & technical documentation: The full Git history and database schema handed over for your in-house engineers to take over.
- Swagger/Postman API documentation: Detailed specification of every endpoint makes integration and satellite expansion extremely easy.
Multi-layer OWASP security & CI/CD process
A comprehensive cybersecurity shield protecting sensitive business data, combined with automated integration and deployment so the system always runs stably.
- Multi-layer OWASP security: Two-way data encryption, fine-grained permissions down to each button and Audit logs.
- CI/CD & automated testing: Keeps the system stable with no new bugs when releasing new features.
- Dynamic multi-level permissions (RBAC): Strict access control by department, branch and job role.
- Automatic backup & disaster recovery: Daily multi-site data backups and instant service recovery in case of incidents.
6 steps professional custom software development process
Every stage of software development is managed with clear acceptance milestones and strict quality testing, and we stay with the business through real-world operation.
Step 1: Current-state survey & Business Analysis (BA)
BA specialists work directly at the business, analyse real operating processes, clarify bottlenecks and complete the Software Requirements Specification (SRS).
Step 2: Prototype & data flow design (Figma Wireframe & Database Schema)
Sketch a 100% interactive Wireframe in Figma, optimise user flows and design an optimal database structure (Database Schema) before coding.
Step 3: Custom development in Sprints (Agile/Scrum)
Source code developed in 1-2 week Sprints following Clean Architecture & Microservices. The customer follows progress directly and accepts each module through demos.
Step 4: In-depth testing (Manual & Automated Testing)
The QA/QC team performs functional testing, high-load stress tests, OWASP security reviews and automated tests to ensure the system is bug-free.
Step 5: Go-live, staff training & 100% code handover
Go live on the business's infrastructure, train staff to use the system confidently and hand over 100% clean source code, the database and technical documentation.
Step 6: Technical warranty, operations monitoring & regular upgrades
A 12-24 month technical warranty, 24/7 system monitoring to prevent incidents and ongoing support to add features as the business grows.
Featured clients and partners
Over 11 years, Sudo has been proud to be chosen by more than 1,000 businesses, retail chains and leading corporations in Vietnam on their journey to build sustainable digital platforms.
What Our Clients Say About Us
Hear real feedback from business owners, operations directors and managers after putting custom software developed by Sudo into operation.
Technology & Marketing Director
Real Estate & Materials Group
CEO & Founder
Technology Equipment Retail Chain
E-commerce Operations Manager
Fashion & Wholesale Brand
Business Development Director
International Trading Company
Answers to questions about Custom Software Development
The most common questions from businesses about technology, source code ownership, the BA analysis process and long-term warranty policy.
Sudo uses modern, sustainable and globally popular technology platforms:
- Backend: Laravel Enterprise, Node.js (NestJS), Golang or Python depending on the business logic and big data processing requirements.
- Frontend: React.js, Vue.js, Tailwind CSS with Responsive design and a fast, optimised user experience.
- Architecture & Infrastructure: Clean Architecture, Microservices, Docker containers, Kubernetes, Redis Caching and powerful relational databases (PostgreSQL, MySQL).
Yes, 100% clean source code and the original database. Sudo says "NO" to solutions that hide source code (Vendor lock-in) or charge annual per-user licence fees. On acceptance, Sudo hands over the entire Git Repository, the database schema, the UI/UX design files in Figma and the Swagger API specification. Your in-house engineers or any future partner can easily take over, operate and develop new features.
Custom software is a strategic investment with 4 major advantages:
- 100% fit with specific processes: The software serves the business instead of forcing the team to change its work habits to fit a template.
- Long-term cost savings: Invest once and own it forever for unlimited staff (Unlimited Users), with no growing monthly per-user costs.
- Complete data security: Stored on the business's own servers (Private Cloud / On-Premise), with no data shared with third parties.
- Unlimited expansion & integration: Ready to connect with factory hardware, POS machines, barcode scanners and satellite systems.
Sudo's BA specialists work directly with your business: We visit your offices, stores or factories to interview department heads and analyse document flows and real operational bottlenecks. Sudo then digitises them into Data Flow Diagrams, interactive Wireframes and the Software Requirements Specification (SRS). The customer reviews and agrees on the whole solution before development begins.
Yes, 100% seamless integration. Built with an API-First architecture, Sudo's software is ready for two-way connections with your existing ERP (SAP, Bravo, Fast, Odoo), accounting software, bank payment gateways and peripherals at stores/warehouses such as barcode/QR scanners, thermal printers, electronic scales and IoT sensors through standardised data protocols.
Average delivery time is 4 to 16 weeks, depending on the scale and complexity of the business problem:
- Small and medium internal management software / Mini CRM: About 4 - 6 weeks.
- Sales, warehouse and warranty management software: About 6 - 10 weeks.
- In-depth ERP systems for retail chains or manufacturing plants: About 12 - 20 weeks (delivered Sprint by Sprint so each module can be used right away).
Sudo is committed to long-term technical support as your business grows:
- Free technical warranty: 12 to 24 months for any bug within the system scope.
- Dedicated 24/7 technical support team: Assigned engineers support you directly via Zalo/Hotline, with an emergency response time under 30 minutes.
- 1-on-1 staff training: Detailed guidance on each module so staff use it confidently, with full documentation and video tutorials.
- Flexible upgrade support: Ready to keep developing new features as the business scales.
Does your business have a specific business problem to solve?
Sudo's business analysts (BA) and solution engineers are always ready to assess your current state and advise on the best technical approach.
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