Senior engineering for websites, web apps, SaaS products, APIs, and integrations, built on whatever technology fits the job. 31 years of experience.
Web Platforms & SaaS
Full-stack applications, portals, and SaaS products built for production
Technology That Fits
Back-end and front-end technology chosen to fit the project
API Integrations
Systems, services, and data sources connected and kept in sync
Headless & Static Sites
Content sites built for speed and low hosting cost
One principal engineer, start to finish: the same person scopes the project, architects it, writes the code, deploys it, and hands it off.
Agencies often put a layer between you and the developers: the person who scoped the project isn’t the person who builds it, and details get lost in the relay.
Every 84EM engagement is handled directly by a principal engineer. Questions go straight to the person writing the code, and decisions don’t wait on a go-between.
Web platforms and SaaS products, API integrations and middleware, back-end engineering, and headless or static sites.
Customer-facing applications, membership portals, and marketplaces. Full-stack builds with authentication, payment processing, admin panels, and the infrastructure behind them.
Connecting CRMs, ERPs, payment processors, shipping providers, and third-party services so data moves between them cleanly. Custom middleware, webhooks, and sync logic built to handle edge cases.
Background jobs, queues, scheduled tasks, and the operational plumbing production work needs, in a stack the team that inherits it can maintain.
Content-driven sites that load fast, rank well, and cost almost nothing to host.
Four stages: discovery and scoping, architecture, development and testing, then documentation and handoff.
Requirements, technical constraints, stack selection, and a project plan with deliverables and dates.
Architecture designed for your platform, hosting environment, and performance requirements. Estimates are specific, and scope doesn't quietly expand.
Automated and manual testing throughout. Error handling, logging, monitoring, and CI/CD pipelines are part of the build from the start.
Code documentation, deployment instructions, and a walkthrough of the system.
Andrew has been absolutely excellent. Over the past 2 years we've been working together, he's become more to our company than an incredibly talented full stack developer; he understands our brand and its goals and makes sure our digital presence is represented correctly. Any company looking for his services would be very lucky to have him on their team!
Yes. Custom AI tools, LLM-powered features, and automated workflows that plug into your existing stack. If you started an AI project that stalled, 84EM audits the work, fixes what's broken, and brings it to production. See AI Integration & Development for the full scope.
Yes. HubSpot, Salesforce, banking platforms, healthcare systems, payment processors, and more. Custom API connections built as needed.
Small fixes and hourly tasks: a few business days.
Small-to-mid projects like plugin builds or focused integrations: a few weeks.
Complex builds like custom applications or platform integrations: 2 to 4 months.
Enterprise engagements: 6 to 12+ months.
Yes. Andrew Miller the point of contact and the accountable party from scoping through deployment.
Yes. All custom code is owned by the client, with full repository access, documentation, and no lock-in.
Contact 84EM to discuss your requirements, timeline, and budget. No commitment required.
Say what you're building. You'll get a straight answer on scope, timeline, and cost.
