Custom enterprise software development & engineering
Tailor-made software solutions architected around your company’s exact operational workflows. Sudo guarantees 100% source code handover, independent GDPR/FADP-compliant data sovereignty, and modular scalability as your business grows.
Trusted by leading European and Asian enterprises
Why do 85% of off-the-shelf SaaS tools fail when adopted by growing enterprises?
Rigid workflows, escalating per-seat subscription fees, and third-party data exposure hold enterprises back. Custom software development by Sudo gives you full control over your operational architecture.
Your operational bottleneck
Rigid, one-size-fits-all workflows
Escalating per-user subscription costs
Third-party data dependency & compliance risks
Dead-ends when scaling or integrating
Sudo’s engineering solution
100% tailored around your exact operational workflows
Every successful enterprise has a distinct competitive edge rooted in how it operates and serves customers. Forcing staff into rigid off-the-shelf software triggers internal friction, workarounds on spreadsheets, and high implementation failure rates.
At Sudo, our Business Analysts (BAs) work directly with each department to map your real-world bottlenecks and engineer software that fits your operations like a glove. From custom forms and multi-tier approval chains to commission formulas and warehouse logic, every screen is built for immediate staff adoption.
Perpetual ownership with zero per-user license fees
With SaaS subscriptions, the more your company grows and hires, the heavier your monthly software tax becomes. Many businesses resort to sharing login credentials to save costs — creating audit blind spots and serious security vulnerabilities.
With Sudo’s custom software, you make a transparent one-time investment and own the platform for life. You can create unlimited user accounts, add new branches, and onboard entire departments without ever paying another per-seat license fee.
Full source code handover & independent data sovereignty
Customer databases, financial ledgers, and operational know-how are your company’s most valuable assets. Relying on shared third-party clouds exposes you to vendor lock-in, unilateral price hikes, or sudden account suspension.
Sudo hands over 100% of the clean source code and deploys the system directly onto your own European cloud or private on-premise servers. You retain exclusive control over your database in full compliance with EU GDPR and Swiss FADP standards.
Modular, API-first architecture built for limitless expansion
Your business model evolves continuously, whereas packaged SaaS tools lock you into fixed boundaries. Requesting a bespoke workflow from a SaaS vendor is either rejected or delayed for years.
Systems engineered by Sudo use a modern modular architecture and open RESTful/GraphQL APIs, allowing you to add new modules at any time and synchronize seamlessly with SAP, Odoo, accounting suites, e-commerce storefronts, and European payment gateways.
Featured custom software systems engineered by Sudo
Explore custom ERP, CRM, POS, and enterprise operational platforms running mission-critical workflows every day for leading corporations and European businesses.
- MobileCity Omnichannel Retail & POS System
- Baby Cua Toi Multi-Warehouse E-Commerce Platform
- Hoa Phat Group Corporate Portal & Data Hub
- CellphoneS High-Concurrency Retail Ecosystem
- Chanh Tuoi Consumer Review & Affiliate Platform
- Karofi Smart IoT & Warranty Management System
- VNPAY QR Payment Integration Platform
- BukkiGo Europe Digital Booking & Salon Platform
3 flexible engagement models & estimated budget ranges
Custom software development is never one-size-fits-all. Sudo offers 3 transparent engagement models so your enterprise can control budgets, mitigate delivery risk, and maximize ROI.
Fixed-scope custom project
Typical range: 2,000 EUR – 6,000 EUR
Focused internal management tools, bespoke mini-CRMs, affiliate portals, digital warranty systems, HR attendance & payroll modules, or standalone departmental workflows.
- Clearly defined SRS scope: Detailed business analysis and Software Requirements Specification (SRS) signed off prior to development.
- Fixed budget & timeline guarantee: On-schedule milestone delivery with zero hidden costs within the agreed specification.
- Turnkey handover: Live staff onboarding, complete technical documentation, and 100% clean source code ownership.
Enterprise core system
In-depth BA discovery & Solution Architecture
Manufacturing ERP modules, multi-branch retail POS & inventory networks, high-load B2B/B2C marketplaces, enterprise data digitization, and complex cross-departmental workflows.
- Deep-dive department discovery: Senior Business Analysts and Solution Architects work directly with your department heads to map end-to-end processes.
- High-concurrency & multi-layer security: Scalable microservices-ready architecture engineered to OWASP, GDPR, and Swiss FADP security standards.
- Long-term engineering partnership: Legacy data migration, company-wide staff training, and comprehensive post-launch SLA technical warranty.
Dedicated engineering team
Flexible monthly scaling by team size
European enterprises and tech companies seeking to expand their R&D capacity with a dedicated, full-time software engineering squad for long-term product evolution.
- Cross-functional senior talent: Full access to Business Analysts, Backend/Frontend/Mobile Engineers, QA Automation Specialists, DevOps, and Scrum Masters.
- 100% dedicated full-time focus: Your squad works exclusively on your product with daily standups, Git commits, and transparent Agile sprint demos.
- Zero recruitment overhead: Scale an elite software engineering department immediately without local hiring delays, HR overhead, or long-term payroll liabilities.
Need a lean Minimum Viable Product (MVP) to validate a market concept within 30–45 days?
Sudo helps you prioritize core high-impact features, accelerate time-to-market, and optimize initial capital expenditure.
Bespoke software solutions by industry vertical
Every industry faces distinct operational bottlenecks and regulatory requirements. Sudo engineers domain-specific software systems that streamline execution and unlock measurable productivity gains.
Retail & multi-branch distribution
Retail & multi-branch distribution
Multi-store POS terminals, real-time inventory synchronization, omnichannel order orchestration, and automated customer loyalty & CRM workflows.
Manufacturing & production operations
Manufacturing & production operations
Production planning, Bill of Materials (BOM) tracking, shop-floor execution (MES), QA/QC inspection workflows, and accurate unit-cost accounting.
Healthcare, clinics & beauty chains
Healthcare, clinics & beauty chains
Smart multi-branch appointment scheduling, GDPR-compliant Electronic Health Records (EHR), treatment package tracking, and medical/cosmetic inventory control.
Real estate & construction management
Real estate & construction management
Real-time property inventory portals, construction milestone tracking, digital contract management, and automated broker commission calculation.
Finance, lending & fintech
Finance, lending & fintech
European payment gateway integration (Stripe, SEPA), loan and credit lifecycle management, automated financial reconciliation, and multi-layer encryption.
Education & corporate e-learning (EdTech)
Education & corporate e-learning (EdTech)
Learning Management Systems (LMS), automated class scheduling and attendance, timed online exams with auto-grading, and student progress portals.
Hospitality, hotels & restaurant chains
Hospitality, hotels & restaurant chains
Centralized property & tour reservation engines, housekeeping status synchronization, F&B table POS, and real-time OTA channel synchronization.
Supply chain, warehousing & logistics
Supply chain, warehousing & logistics
Multi-depot Warehouse Management Systems (WMS), Fleet & Transport Management (TMS), live GPS route tracking, and transparent freight billing.
Core engineering capabilities that set Sudo apart
Beyond writing code, Sudo partners with your leadership team to architect a resilient, secure, and permanently owned technology foundation.
Precision-engineered around your real-world workflows
Our Business Analysts map your actual departmental operations in detail so the software adapts to your business — not the other way around.
- Frictionless role-based UI: Clean, task-focused interfaces that minimize staff training time and prevent manual data-entry errors.
- End-to-end workflow automation: Automated multi-level approvals, cross-department task handoffs, and instant notifications.
- Real-time executive dashboards: Live operational KPIs, financial analytics, and custom reporting at your fingertips.
100% source code & database handover
Your enterprise owns 100% of the source code and database in perpetuity, eliminating vendor lock-in and recurring SaaS licensing fees.
- Perpetual source code ownership: Complete delivery of clean, well-documented source code and database schemas.
- Unlimited user accounts: Add unlimited employees, branches, and partners without ever paying per-seat subscription fees.
- Open API extensibility: Standardized RESTful/GraphQL APIs ready to sync with SAP, Odoo, accounting suites, and third-party platforms.
Enterprise-grade security & long-term SLA support
Engineered from the ground up with strict security controls, automated backups, and long-term technical warranty coverage.
- Encryption & granular RBAC: End-to-end encryption of sensitive records and strict Role-Based Access Control across every hierarchy level.
- Automated daily snapshots: Independent daily database backups with rapid point-in-time disaster recovery.
- Dedicated SLA engineering support: Direct access to Sudo’s engineering team for continuous maintenance, performance tuning, and feature upgrades.
Our structured 6-step custom software engineering process
Every phase is governed by clear acceptance criteria, independent QA & security testing, and hands-on onboarding to ensure smooth production rollout.
Operational discovery & SRS specification
Our Business Analysts work directly with your stakeholders to identify operational bottlenecks, map workflows, and finalize a detailed Software Requirements Specification (SRS).
Interactive UI/UX & database architecture
We design interactive Figma wireframes/prototypes and normalize the database schema so you can validate every user flow prior to coding.
Agile sprint-based engineering
Software is developed in structured Agile sprints. You track live progress and test working staging demos every week or bi-weekly.
Independent QA & OWASP security auditing
Our independent QA engineers conduct rigorous functional testing, load/stress testing, and OWASP security audits to ensure zero-defect stability.
Deployment, staff training & source code handover
We deploy the platform onto your cloud or on-premise servers, conduct hands-on staff training, and hand over 100% of the source code and technical documentation.
12-month warranty & continuous evolution
Backed by a 12-month complimentary technical warranty, proactive incident support, and flexible capacity for future module expansions.
Trusted by enterprise clients & long-term partners
With over 11 years of software engineering experience and offices in Switzerland and Vietnam, Sudo partners with hundreds of enterprises, retail chains, and industrial corporations.
What our clients say about us
Read real-world feedback from business owners, COOs, and enterprise directors running mission-critical operations on custom software built by Sudo.
Mr. Pham Quang Phong
Chief Operating Officer (COO) — MobileCity Retail System
Mr. Vu Minh Thuan
Managing Director — BBT Vietnam Trading & Manufacturing JSC
Or verify our independent reviews on
Frequently asked questions about custom software development
Detailed answers regarding budget estimation, delivery timelines, 100% source code ownership, GDPR/FADP data security, and post-launch warranty.
Custom software development costs at Sudo are based on functional scope, workflow complexity, and third-party system integrations. For focused departmental systems (such as custom mini-CRMs, digital warranty portals, or inventory/HR modules), fixed-scope budgets typically range from 2,000 EUR to 6,000 EUR. For comprehensive enterprise ERP systems, multi-branch retail platforms, or high-concurrency marketplaces (typically starting from 8,000 EUR), we provide a transparent, itemized quote after our Business Analysts complete a structured discovery phase. We guarantee fixed-price milestone billing with zero hidden fees.
Yes, 100%. This is a core pillar of Sudo’s engineering model. Unlike subscription SaaS platforms that charge recurring monthly per-user fees, Sudo transfers the complete, clean source code, database schemas, and technical documentation to your company upon final acceptance. You own the intellectual property in perpetuity, can add unlimited users at zero extra cost, and have zero vendor lock-in.
Typical delivery timelines range from 30 to 90 business days depending on architectural complexity:
- Lean MVP or focused departmental tool: 15 to 45 days.
- Comprehensive enterprise management system: 2 to 3 months.
- We execute projects in weekly or bi-weekly Agile sprints, giving your team access to a live staging environment to test and validate features continuously before go-live.
Yes. With our European representative office in Killwangen, Aargau, Switzerland and main R&D centers in Vietnam, Sudo conducts structured discovery workshops aligned with Central European Time (CET). Our Business Analysts and Solution Architects work directly with your department heads — via interactive online workshops or on-site consultations — to audit current workflows, document edge cases, and finalize a comprehensive Software Requirements Specification (SRS) before engineering begins.
We sign a legally binding Non-Disclosure Agreement (NDA) before reviewing any proprietary project information. Technically, all systems are engineered in strict compliance with EU GDPR, Swiss FADP, and OWASP security standards, featuring end-to-end encryption, granular Role-Based Access Control (RBAC), and audit logging. The software is deployed directly onto your own European cloud (e.g., Akamai/Linode EU, AWS Frankfurt/Zurich, Azure) or on-premise servers, ensuring 100% data sovereignty.
Every custom software system engineered by Sudo includes a complimentary 12-month technical warranty from handover. During this period, our engineering team resolves any code defects at zero cost. Beyond the warranty period, you can either maintain the system internally using our documentation or opt into Sudo’s flexible SLA maintenance and feature expansion retainers.
With over 11 years of software engineering experience (D-U-N-S® Registered: 55-678-2017) and a proven track record across major corporations (Hoa Phat Group, Eurowindow, VNPAY, Karofi, BukkiGo GmbH), Sudo provides institutional reliability that freelancers cannot match. Hiring independent freelancers carries high risks of abandoned codebases, poor documentation, and security vulnerabilities. At Sudo, your investment is protected by binding B2B contracts, dedicated Business Analysts, independent QA/security testing, and long-term engineering continuity.
Does your enterprise need a custom-engineered software solution?
Sudo’s Business Analysts and Solution Architects are ready to review your operational workflows and propose a cost-optimized technical roadmap.
Get a tailored solution consultation
Launch your custom software project with SUDO
Share your operational challenges below. Sudo’s solution architects will review your requirements and respond with a tailored technical consultation within 24 hours (CET).
Europe Office: Dorfstrasse 14, 8956 Killwangen, Switzerland (+41 77 530 43 73)
Hanoi Office: 3rd Floor, Dolphin Plaza (Towers 3-4), 6 Nguyen Hoang, Tu Liem Ward, Hanoi (+84 989022022)
Hanoi Office: 3rd Floor, 19 Co Van, Dong Anh Commune, Hanoi. (+84 989022022)
Nghe An Office: 14th Floor (Nghe An Petroleum Building), 7 Quang Trung, Quang Trung Ward, Nghe An. (+84 989022022)
Request a consultation & software estimate
Strict NDA protection, GDPR/FADP compliance, and transparent ROI-focused architecture for your enterprise.