Building your craft at Assembly
A firm built for senior practitioners.
Assembly hires the engineers, architects, and program leaders who run the work end-to-end. Senior practitioners working directly with clients, owning the outcomes, building platforms the business depends on for the long haul.
Why senior practitioners choose Assembly
Built for people who want ownership, modernity, and serious work.
Assembly is built around senior practitioners running the work directly for clients. The model gives you the autonomy, the modern tools, and the kind of substantive engagements that make a career compound year after year.
Reason 01
Senior practitioners running the work.
Every engagement is staffed by senior people doing the work directly. You build, you decide, you talk to the client yourself. The model exists because that is how high-stakes programs actually get delivered, and because the practitioners we want to attract are the ones who want to operate that way.
Reason 02
Modern stack with frontier tools.
Assembly's engineers work day to day with Claude Code and Codex, alongside the platform stack our clients run (Microsoft, Sitecore, Databricks, Drupal). The firm invests in the tools and certifications that keep practitioners on the leading edge of where the industry is going.
Reason 03
Work that compounds for years.
Assembly client relationships run for years and often for decades. The work you do becomes platforms that clients operate for the long haul, not deliverables that get shelved after launch. Engineers see what they built running in production years later.
Reason 04
A firm that is built to last.
Privately held and founder-led for two decades, with the same partners running the firm today who started it. The continuity is real: the firm you join is the firm that will be here when you have grown into your next role, and the one after that.
What you will work on
Substantive work for clients that matter.
Assembly engagements are estate-scale modernization programs across financial services, automotive, energy, real estate, regulators, and more. The work has weight. The clients are serious. The systems matter to the businesses that depend on them.
Cloud and platform engineering.
Greenfield Azure foundations, complex migrations, landing zone architecture, the engineering that turns infrastructure into something a client team can actually operate.
Web platform modernization.
Estate-scale consolidation programs, headless and componentized rebuilds, design systems that survive across multi-brand portfolios, integrations that hold up under real load.
Application modernization.
Legacy estates rebuilt without breaking what runs the business. End-of-life portfolios moved into platforms engineered for the next decade. The hard middle of estate modernization.
Data foundations and AI delivery.
Data platforms that make AI possible, AI Readiness assessments that move organizations from conversation to first move, AI-accelerated delivery practices that compress build time.
The tools you would actually be using
Frontier AI alongside senior judgment.
Assembly's engineers work with frontier AI tools (Claude, Codex, Cursor) every day. Not as an experiment. Not as a junior replacement. As a craft multiplier that lets senior practitioners spend more time on the parts of delivery that actually need their judgment.
AI handles the repeatable work.
Code generation, test scaffolding, documentation, refactoring across large codebases, scanning unfamiliar systems quickly. The work that used to consume hours of senior time is now compressed into minutes, without losing the senior context that makes the output usable.
Practitioners handle the judgment.
Architecture decisions, trade-offs that depend on the business, debugging in regulated production environments, conversations with the client. The parts of delivery that actually need a senior brain stay on the senior practitioner. The model is augmentation, not replacement.
Modern tooling, modern velocity.
Faster feedback loops, faster onboarding to client codebases, faster iteration on architecture options. The combination of senior practitioners and frontier AI tooling is how Assembly moves at modern velocity without sacrificing the discipline that makes the work hold up over the long term.
Benefits and compensation
Real, competitive, and straightforward.
Assembly pays senior rates for senior work. The benefits are comprehensive and built around the practical things practitioners actually use.
How we hire
An interview process designed to predict performance.
Assembly's hiring process follows the rule of four: four structured steps, each with a defined focus. The pattern is well-studied. Used consistently, this kind of structured interview predicts on-the-job performance with roughly 86% confidence, which is meaningfully better than unstructured interviewing or any single signal in isolation. The goal is for both parties to leave the process with real evidence about whether the fit is right.
Initial video chat
An introductory conversation with our People Ops team to understand your skill set, interests, and ambitions, and for you to ask the questions that determine whether the opportunity is worth pursuing. Open-ended, low-stakes, and honest about scope.
Take-home challenge
A take-home assignment shaped to the role: a case study, a presentation, or a technical challenge depending on the work. Designed to be substantive but not punishing on time. The point is to see how you think and what you produce, not how many evenings you can sacrifice.
Presentation and deep dive
A working session with the hiring team, walking through the take-home challenge and the experience behind your approach. We discuss strengths, areas for growth, and how you would interact with the team in practice. Meant to feel like a real conversation, not a panel interrogation.
Top-grade interview
A structured conversation with our People Ops team focused on the story of your career: patterns of success, the choices that shaped your trajectory, the kind of environment where you do your best work. Comprehensive, professional, and used to inform a final decision both parties can stand behind.
Open roles
Ready to see what is open?
Active positions are listed in our job board. If you are a senior practitioner and would like to start a conversation even when nothing perfect is posted, send a note. The firm hires continuously, and the right person almost always finds the right seat.