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Senior product engineering

Build software people trust.Keep it that way.

Acefina designs, builds, rescues, and operates web and mobile products for teams with real users, real workflows, and no room for fragile software.

Tell us what you are building See the proof
50+ engagements10+ years in productionWeb · Mobile · Infrastructure
What makes us different

The work does not stop when the screens look finished.

We stay through data, edge cases, infrastructure, launch, incidents, and the decisions that arrive after customers begin using the product.

Selected systems

Not concepts. Software in the wild.

Three products. Three different businesses. One standard: it has to work after launch.

01Owned SaaS · web + mobile

Know before your customers do.

VisualSentinel watches the production signals ordinary uptime tools miss: visual changes, performance, SSL, DNS, APIs, content, incidents, and infrastructure.

  • Web platform
  • Native mobile
  • Production infrastructure
Visit the live product
Know before your customers do. product interface
02Client operations portal

The operation, out of spreadsheets.

Outbound Partners brings campaign delivery, meetings, client health, renewals, commissions, reporting, and role-aware workflows into one accountable system.

  • Role-aware access
  • Business automation
  • Operational reporting
The operation, out of spreadsheets. product interface
03Growth platform · premium brand

Growth, designed as a system.

Mount5 turns strategy, creative, media, technology, and continuous optimisation into one cinematic digital presence built to move ambitious brands forward.

  • Brand system
  • Motion direction
  • Growth experience
Visit the live product
Growth, designed as a system. product interface
Capabilities

One senior team across every product surface.

Strategy, interface, engineering, release, and operations stay connected. You do not lose the problem in a chain of handoffs.

01

Product engineering

Next.js and React products, portals, integrations, permissions, billing, and the failure states that separate a demo from production software.

02

Production rescue

We trace the real failure path, repair the highest-risk parts, and make releases boring again.

03

Performance systems

Core Web Vitals, caching, payloads, render paths, servers, and verified before-and-after results.

04

Mobile products

Device-native experiences built around permissions, notifications, offline state, background work, and store delivery.

Native where it matters

Your product should feel at home on the device.

Location, notifications, background work, offline state, and the hand-feel of every interaction are product decisions—not implementation details.

Discuss a mobile product
VisualSentinel mobile dashboard
LocatAlert alarms
VisualSentinel monitor details
Website care

Launch is a date. Reliability is a practice.

Clear monthly plans for teams that want one accountable partner after the site goes live.

01

Essential care

$150/month

Keep a live site patched, backed up, monitored, and online.

  • Uptime and SSL monitoring
  • Dependency updates
  • Daily backups
  • Small monthly fixes
Choose Essential care
02Most popular

Managed care

$450/month

Performance and security work that prevents quiet decay.

  • Everything in Essential
  • Core Web Vitals watch
  • Security and malware response
  • Priority turnaround
Choose Managed care
03

Operated

$1,200/month

Roadmap, releases, incidents, and continuous improvement.

  • Dedicated engineering time
  • Release management
  • Incident response
  • Direct senior access
Choose Operated
Start with the real problem

Bring us the idea, the deadline, or the system nobody wants to touch.

A senior engineer will read it and reply in writing—usually within one business day.

Start a serious conversation
Production-minded Senior attention Evidence before claims