AppTime

Services

Engineer the product. Rescue the messy middle. Lock it down.

From greenfield MERN and Next.js systems to AI agents, Chrome-first extensions from $500, and production hardening of AI-built MVPs — clear scope, maintainable architecture, honest fit. The brief at the bottom is short on purpose.

Start a project brief

Full-stack web apps

Production MERN and Next.js applications: schema design, REST APIs, React frontends, secure auth and payment flows — built to scale and documented so your team is never locked in.

Good fit: Greenfield products, internal tools, and SaaS V1s that need to ship properly the first time.

Brief us on this
  • Architecture and data model designed for real users, not demos
  • Auth, roles, and payment flows wired correctly
  • Deployed app with docs your team can maintain

API & integration work

REST APIs, webhooks, and OAuth flows in Node.js and Python connecting platforms that don’t natively talk. 200+ custom integrations shipped across CRMs, payments, and databases.

Good fit: Teams stitching CRMs, billing, data warehouses, and custom APIs together.

Brief us on this
  • Reliable sync between systems with clear failure modes
  • OAuth, webhooks, and retries handled production-style
  • Observability so you know when a connector breaks

Agentic AI systems

Custom agents, document processors, and lead-qualification engines using OpenAI, Claude, and Gemini. Real decision-making — not chatbot demos.

Good fit: Operators automating document review, qualification, support triage, or internal ops.

Brief us on this
  • Narrow agents with logging and human checkpoints
  • Data access and permissions designed before autonomy
  • Cost controls and evaluation on the paths that matter

Browser extensions (Chrome first)

A branded Chrome extension for your company from $500. Gemini and Google AI citation is included by default — we ship the public pages and indexing that answers can cite, then measure whether Gemini names you. Edge, Firefox, and Safari are add-ons of the same extension.

Good fit: Brands that need an operator extension in the browser and want AI answers to be able to name them.

See packages from $500
  • Chrome Manifest V3 from $500–$2,000 by complexity (Starter, Launch, Custom)
  • Gemini prompt checks plus public pages, schema, and indexing — not a separate SKU
  • Same extension on Edge ($150), Firefox ($250), or Safari (from $750)

Automation that doesn’t break

Production n8n and Make systems connecting CRMs, email, databases, and payment processors — with proper error handling and logging.

Good fit: Ops and growth teams replacing brittle zap chains with systems you can trust.

Brief us on this
  • Workflows with retries, alerts, and dead-letter paths
  • Clear ownership of each step and data handoff
  • Less silent failure in ops-critical pipelines

SaaS rescue & MVP hardening

Lovable, Bubble, or AI-generated MVPs that need to become production. We fix slow, unstable, or quietly breaking products — root cause first, no unnecessary rewrites.

Good fit: Founders stuck at ~80% after vibe coding — need the last 20% finished.

Brief us on this
  • Severity-rated audit and punchlist
  • Auth, payments, and deploy path stabilised
  • Hostile QA + security pass before you invite users

Security auditing & remediation

Real-world attack vectors: exposed secrets, broken auth, missing rate limits, IDOR, injection, XSS/CSRF, misconfigured permissions. Plain-language report, prioritised fixes, then we implement and verify.

Good fit: Pre-launch AI apps and inherited codebases that have never had a real threat pass.

Brief us on this
  • Plain-language findings with severity
  • Prioritised remediation you can hand to any engineer
  • Optional implement-and-verify pass with AppTime

Core stack we ship with

MongoDB, Express, React, Node.js, Next.js · OpenAI, Claude, Gemini, LangChain, RAG, MCP · Python, REST, webhooks · PostgreSQL, Supabase, pgvector · Stripe, Plaid · Playwright, Apify, FireCrawl · n8n, Make · Chrome Extensions (Manifest V3) · OWASP-minded security hardening.

Project brief

Tell us what you need

Name, email, and a few lines. We’ll reply with fit and a next step.