Application Maintenance & Support
Ongoing technical ownership of the web application your business depends on.
Someone has to own it. That is what we do.
A live web application is never "done". PHP versions reach end of life, dependencies need security patches, cron jobs silently fail, queues back up, integrations change their APIs, and the database grows until yesterday's fast page is today's timeout. Application maintenance is the discipline of catching these things before your customers do.
Synapse Code provides long-term maintenance and support for existing PHP, Laravel and Symfony applications — SaaS products, booking and travel platforms, e-commerce backends, B2B portals and internal business systems. We work as your standing technical partner: same people, accumulated knowledge of your system, no re-onboarding every time something breaks.
Incidents jump the queue
Stability and incident response take priority over everything else.
We stay for years, not tickets
We take ownership for years, not tickets — our founder's longest client relationship ran for five years.
You see what was done, and why
Clear reporting on what was done, why, and what we recommend next.
what maintenance covers
Incident resolution, monitoring, log analysis, and fixing the recurring failures behind them — including cron jobs and queue workers. We once stabilised production cron jobs that were accumulating and exhausting server memory.
A steady stream of fixes and quality-of-life improvements, so the application keeps getting better instead of slowly rotting.
Dependency updates, security patches, PHP and framework version currency — handled routinely, not in a panic after an advisory like PHP2Shell.
MySQL/PostgreSQL care, slow-query work and caching with Redis. We took one client's Laravel search page from ~17 seconds to ~1 second.
Keeping third-party integrations alive as external APIs evolve — payments, availability, pricing, e-commerce and operational systems.
AWS, Docker, deployment pipelines and backups — reviewed, documented and kept healthy as part of the retainer.
what a month looks like
Patched on a schedule, not after an advisory
Updates, security patches and fixes applied on a schedule — not in a panic after an advisory.
Incidents first
When production breaks, it jumps the queue — ahead of every piece of planned work.
Plain language, not ticket jargon
What was done, why, and what we recommend next — in plain language, not ticket jargon. More on How We Work.
Support without hiring an internal team
If nobody on your payroll writes code, the application still needs an owner. Hiring one engineer rarely covers it — the work spans PHP, the framework, the database, hosting and deploys. A maintenance retainer gives you that coverage from one accountable partner, sized to how much your system actually changes, with the same people building up knowledge of it month after month.
Maintenance without a rewrite
Older business software does not need replacing just because it is old. Our default is to keep the system you have working and improve it step by step. A rewrite is recommended only when an assessment shows the system genuinely cannot be evolved safely — and we show you the evidence. Larger structural work runs as staged modernisation, not a big-bang rebuild.
We work your hours, not just ours
Our engineers are based in Kyiv (EET) and work flexible schedules across an 08:00–20:00 local window. That covers a full UK and European working day.
For clients in the US, the time difference works in your favour. Our morning is night across the US Eastern and Central time zones, so updates and releases go out while your traffic is lowest and your team is offline. We stay on after each release to watch it, with a tested rollback ready. Our afternoon overlaps your morning, so questions still get answered the same day.
framework-specific maintenance
The day-to-day of maintenance differs by stack. See the dedicated pages for your framework:
Queues, Horizon, scheduler, Eloquent performance, version upgrades.
Learn more →Plain PHP and older frameworks, including systems whose original developers are gone.
Learn more →When nobody is currently maintaining the system at all.
Learn more →maintenance questions
Yes — it is one of our core services, and the previous developer does not need to be available. We audit access and code, stabilise anything urgent, then move to ongoing maintenance. See application takeover.
Production incidents are prioritised ahead of all planned work, and we reply within one business day. Specific response commitments are agreed in your maintenance arrangement — see How We Work.
Yes. Many businesses we work with have nobody on the payroll who writes code. A maintenance retainer gives you one accountable partner for the code, framework, database, hosting and deploys, sized to how much your system actually changes.
Yes. Our default is to keep the system you have working and improve it step by step. A rewrite is recommended only when an assessment shows the system genuinely cannot be evolved safely, and we show you the evidence. Larger structural work runs as staged modernisation.
You do, from day one. Repositories, servers, cloud accounts, domains and third-party services stay under your ownership, and we work inside your accounts. If we ever part ways, you get a clean, documented handover: repository access confirmed, credentials returned, documentation up to date, and a transition period for your next team's questions. See our ownership and offboarding promise.
A monthly retainer sized to your system and how fast it changes, agreed after the System Risk Check — so the number is based on evidence, not guesses. Bigger features run as time-and-materials projects alongside the retainer. Details on the pricing page.
Yes. AWS and other hosting, Docker, deployment pipelines, backups, and MySQL/PostgreSQL care are part of the maintenance scope — one accountable partner for code, database and infrastructure.
It usually helps. Our working morning in Kyiv is night across the US Eastern and Central time zones, so updates and releases go out while your traffic is lowest and your team is offline. We stay on after each release to watch it, with a tested rollback ready. Our afternoon overlaps your morning, so questions still get answered the same day.
Yes, including end-of-life versions as old as Symfony 1. When a security issue appears, we apply what is available, such as a patched package from your Linux distribution or a mitigation at the server level, and plan the upgrade that removes the risk for good. Updating is the only complete fix, as we explain for PHP2Shell.
Not the question you had? Our full FAQ covers how engagements start, scale and end.
customer testimonials
We engaged them to modernize a legacy internal application, and within months, they delivered a solution that exceeded our requirements on every front. What stood out most was their ability to balance speed with sustainability—they delivered results on a tight timeline without cutting corners. Synapse Code is simply the best external partner we've worked with. We're already mapping out our next development phase.
CEO at Advanced Ultrasound Systems
Valentyn and his team helped us build a flexible backend system to manage training sessions, client materials, and participant feedback. What stood out was their ability to translate our needs into a clean, functional platform. Their calm, clear communication and dependable delivery made the whole process feel effortless. And, Valentyn himself, is a thoughtful leader with incredible skills. 10 out of 10 would recommend!
founder
We worked with Valentyn’s team on integrating our AI automation platform with several third-party services via custom APIs. They quickly understood the technical requirements and delivered a clean, well-documented solution that worked out of the box. Their work helped us reduce onboarding time for new clients and made our system much easier to scale. Great communication, fast iterations, and no surprises - highly recommended!
CEO at Aimeice Tech
I worked with Valentyn on a custom web application and it was a great experience. He quickly understood our needs, was deeply involved in the project, and delivered a clear and well-structured solution. Everything went smoothly from start to finish. Highly recommended.
Head of Commercial Operations in Calidad Pascual
We had the pleasure of working with Valentyn Morozov during the implementation of our Electronic Case Report Form (E-CRF) system. From the initial E-CRF setup to troubleshooting technical issues and implementing changes as our requirements evolved, he was always responsive, knowledgeable, and focused on finding the right solution. I highly recommend Valentyn to anyone looking for a knowledgeable, reliable, and committed IT professional.
Country Manager Ukraine at Audubon Bioscience
Working with Valentyn has been a game-changer for us at AUS. We brought him and his team in to transition from our legacy internal app to a new platform, and they exceeded our expectations on every front—delivering in just a few months. Valentyn brings a rare combination of deep technical expertise and strong business acumen. His solutions are smart, practical, and built to last, with a clear focus on quality and sustainability.
Marketing at Advanced Ultrasound Systems
I've worked with Valentyn and the Synapse Code team on transforming an early low-code prototype into a production-ready, multi-tenant SaaS platform. They took ownership of the technical complexity across the backend, frontend, infrastructure, AI workflows, and third-party integrations, replacing a fragile setup with a reliable Symfony, React, and AWS foundation. What I particularly value is that Valentyn approaches the work as a long-term technical partner, not simply as someone completing individual tickets.
Founder at Ranking Superior
Related case studies
Maintenance & Support Laravel maintenance for two established travel websites
How we took ongoing technical ownership of two live Laravel travel websites — cutting a key search page from about 17 seconds to about 1 second along the way.
Maintenance & Support Culinary events platform: years of maintenance and a UK launch
We keep a Dutch culinary events platform stable through high-traffic ticket sales — and refactored its legacy Symfony core so the same system could launch in the UK.
Rescue & Incident Response The outage that wasn’t the application: a Route 53 DNS story
Internal business systems stopped resolving even though the servers were healthy. We traced the outage layer by layer to incomplete Route 53 delegation and restored access.
Start with a System Risk Check
Before any retainer, we review your application and send you a written report: current risks, quick wins, and what ongoing maintenance should cover. No obligation to continue.
We use cookies to help you navigate efficiently and perform certain functions. You will find detailed information about all cookies under each consent category below.
The cookies that are categorised as "Necessary" are stored on your browser as they are essential for enabling the basic functionalities of the site. We also use third-party cookies that help us analyse how you use this website, store your preferences, and provide the content and advertisements that are relevant to you. These cookies will only be stored in your browser with your prior consent. You can choose to enable or disable some or all of these cookies but disabling some of them may affect your browsing experience.