Code System Maintenance & Operations Services
Operations services & dedicated engineers on demand (Retainer/SLA). Emergency incident response, 24/7 monitoring, database optimisation and performance bottleneck fixes for Viber Bot, PHP, NodeJS and Cloud projects.
Why does a growing code system become the biggest risk for a business?
Servers choking at peak hours, legacy code without documentation, the high cost of an in-house team and no proper backup process are constant worries for many managers.
Challenges
Overloaded servers crashing at peak hours for no clear reason
Patched legacy code that nobody dares to touch after the original team left
Keeping a DevOps & Senior Dev team is too expensive
Malware attacks, data leaks and lost backups
Solutions
Emergency response with SLA < 30 minutes, fixing bottlenecks & SQL queries at the root
Sudo responds to server crashes and system overloads 24/7 through a technical hotline. We use specialised APM tools (Prometheus, New Relic) to pinpoint hardware bottlenecks or slow queries and bring the system back to normal with the highest SLA commitment.
Full source code audit, standardised architecture & specification documents
Sudo's software architects review every line of source code, refactor complex modules, standardise coding rules (Clean Code, PSR, ESLint) and write detailed technical documentation so the business can easily keep upgrading or onboard new developers.
Flexible Retainer model: dedicated engineers that save 65% of costs
Instead of paying hundreds of millions for a permanent dev team, Sudo's Retainer model gives the business a versatile dedicated engineering team (Backend, Frontend, DevOps, DBA) by the hour or by the month, flexibly scaling the team to each project stage.
24/7/365 APM monitoring & automatic multi-region cloud backups
We deploy bots that ping service status every 30 seconds and track disk space, RAM and CPU in real time. Automatic Daily Backups are encrypted and uploaded to a fully separate cloud storage, so the business can restore the system intact within 15 minutes.
Maintenance Service & Dedicated Engineer Pricing
Flexible cooperation models: hire engineers by the hour (270.000đ/hour), monthly on-demand incident support, or a regular maintenance package with 99.9% Uptime for your system.
Hourly Engineer Hire
Flexible on demand, billed on actual hours (Timesheet)
Businesses or IT teams that need extra Senior capacity for ad-hoc tasks, code reviews, small bug fixes or quick feature tweaks without a long-term commitment.
- Billed on actual hours: Detailed, transparent Timesheet reports for every task.
- Senior Developers do the work: Specialists in Viber Bot, PHP/Laravel, NodeJS, SQL.
- Flexible handling on request: Query optimisation, logic bug fixes, Webhook/API integration.
- Direct communication: Connect via Slack, Telegram or Zalo, working on Git.
- 100% commit handover: Clean Code standards, transparent hourly acceptance.
Monthly On-demand Support
Full survey & resolution for each incident that arises
Businesses facing server crashes, peak-hour traffic jams, serious code errors or needing urgent rescue and security patches for incidents during the month.
- Emergency response in 15 - 30 minutes: Engineers take incidents directly 24/7.
- Senior Backend & DevOps on standby: Isolate bottlenecks and fix issues thoroughly.
- Safe recovery: Database integrity preserved, no data loss.
- Detailed RCA report: Root cause analysis and prevention recommendations.
- Post-fix stability monitoring: Warranty and follow-up after resolution.
Monthly Regular Maintenance
24/7/365 monitoring & response SLA < 30 minutes
Businesses running commercial systems continuously that need 99.9% Uptime, automatic data backups and a technical partner to prevent incidents.
- 24/7 APM monitoring: Automatic alerts for server crashes and CPU/RAM/Disk overloads.
- Emergency response SLA < 30 minutes: Top-priority incident handling 24/7.
- Automatic Daily Backup: Secure multi-region Cloud storage.
- Regular database optimisation: Indexing, log clean-up, query optimisation.
- Security patch updates: Malware scans, regular OS/Framework updates.
- 20 - 40 hours of code work: Fix arising bugs and fine-tune small features.
Technical standards for operations & infrastructure security
Strict compliance with DevSecOps standards, real-time performance monitoring tools and a multi-region disaster-proof backup architecture.
24/7 APM monitoring & instant alerts
Prometheus, Grafana and Sentry integration to track every CPU, RAM, Disk I/O and HTTP response metric. Alerts are sent automatically via Telegram/SMS at the first sign of anomaly.
- Service status ping every 30 seconds
- Early Memory Leak detection
- Instant CPU/Disk overload threshold alerts
Database optimisation & Multi-Layer Caching
Review and optimise Slow Queries, set up Read/Write Database Replication and a Redis Caching layer so the system smoothly handles millions of users.
- Composite Index & Query Plan optimisation
- 80% less direct read load on the database
- Table Partitioning
CI/CD Pipeline & Multi-region backup
Automated Zero-downtime Deployment. Daily backups are encrypted and synced to a multi-region cloud storage cluster with complete security.
- Zero-Downtime Deployment with Docker/CI/CD
- Encrypted backups & regular restore tests
- Cloudflare WAF firewall against DDoS & bots
5 steps operations & emergency response process
Every incident or maintenance request is managed under transparent SLA standards, with real-time ticket tracking and clear acceptance reports.
Intake & NDA signing
Receive incident requests or regular maintenance needs. Sign a non-disclosure agreement (NDA) and set up direct communication via Slack/Telegram/Hotline.
Survey & Root Cause analysis
Access the server environment with Least Privilege, audit logs, profile queries and document the root cause analysis (RCA).
Rescue / Refactoring
Senior Developers apply hotfixes, refactor modules, optimise server configuration and layer the Redis cache on a staging environment before deploying.
Load testing & Backup
Run stress tests simulating peak traffic, verify response times and set up automatic daily backups.
Report handover & 24/7 standby
Hand over 100% of commit logs on Git and technical documentation, and activate APM monitoring with automatic 24/7/365 incident alerts under the SLA commitment.
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 CTOs, technical directors and operations managers about Sudo's incident rescue and SLA maintenance services.
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 frequently asked questions
The most common questions from businesses about SLA commitments, source code security, the emergency response process and the dedicated engineer model.
For customers on the Regular Maintenance Package (Retainer) or requesting emergency rescue, Sudo commits to a response SLA under 30 minutes (10 - 15 minutes on average in practice) via the Hotline and a technical chat channel staffed 24/7/365, including holidays and nights. Engineers immediately access the system to isolate the incident and restore it as quickly as possible.
Sudo has engineers specialised in:
- OTT apps & Bots: Viber Bot API, Zalo Mini App, Telegram Bot, WebSocket/Socket.io.
- Backend Frameworks: PHP (Laravel, Symfony, WordPress Core), NodeJS (Express, NestJS), Python (Django, FastAPI), Golang.
- Databases & Caching: MySQL, MariaDB, PostgreSQL, Redis Cluster, Elasticsearch.
- Infrastructure & Cloud: Linux (Ubuntu, CentOS, Rocky Linux), Nginx, Docker, Kubernetes, AWS, Linode, Cloudflare.
100% secure. Before receiving access to any system, Sudo and the customer sign a legally binding Non-Disclosure Agreement (NDA). We apply the Least Privilege principle, access only via secure SSH keys and log every action performed on the system.
Absolutely. Sudo offers hourly engineer hire (270.000đ/hour) with a transparent Timesheet, monthly on-demand support, or a dedicated developer by the month (40 - 160 hours/month) to flexibly solve urgent problems without recruitment costs or long-term commitments.
After each rescue or at the end of each maintenance month, Sudo sends a transparent technical report including:
- Root Cause Analysis (RCA) report of the incident.
- The list of bug-fix commits pushed directly to the business's Git Repository.
- Performance charts (Before vs After) for CPU load, RAM, API response time and actual Uptime.
- Technical recommendations for the next system expansion roadmap.
Hiring 1 Senior Developer usually takes 1 - 2 months with a salary of 35 - 50 million VND/month plus insurance, equipment, bonuses and the risk of sudden resignation. When working with Sudo, the business immediately gets a multi-skilled team of experts (Backend, DevOps, DBA, Security) at a fraction of the cost, with standardised processes and a clear legal SLA commitment.
Start your Maintenance & Rescue service with SUDO
Leave details about your system. Sudo's Senior DevOps & Solution Architects will contact you to assess the current state and advise on the best technical approach within 15 - 30 minutes for emergencies.
Hanoi Office: 3rd Floor, Dolphin Plaza (Towers 3-4), 6 Nguyen Hoang, Tu Liem Ward, Hanoi.
Hanoi Office: 3rd Floor, 19 Co Van, Dong Anh Commune, Hanoi.
Nghe An Office: 14th Floor (Nghe An Petroleum Building), 7 Quang Trung, Quang Trung Ward, Nghe An.
Europe Office: Dorfstrasse 14, 8956 Killwangen, Switzerland.
Consultation & Audit request for system health
Information kept confidential under an NDA. Fast response.