What it took to triple our software engineering output in 18 months

A legal software company's R&D organization tripled output per engineer in 18 months by rebuilding its development life cycle around AI agents, according to its CTO. Deployments grew from 82 to more than 155 per quarter, customer-reported defects fell 65% per million lines of code, and AI-assisted pull requests rose from 3% to 68%.

A year and a half ago I sat in a conference in Silicon Valley and watched an AI agent write production-quality code in real time. I knew our engineering model was going to change, and within a few weeks my team was past the question of whether to adopt AI. The real debate was how far we were willing to go in redesigning how we build legal software around it. Since then, output per engineer across our R&D organization has roughly tripled. We ship nearly twice as many releases per quarter, deployments have grown from 82 to more than 155, and customer reported defects are down 65% per million lines of code across the last 18 months. We track all of this with DORA metrics, cycle time, pull requests merged per developer, and lines changed per developer against a fixed baseline, and the improvement holds up on every measure. Getting there had less to do with the tools than with how the organization works. Every CTO I talk to is running some kind of AI coding pilot and seeing decent results: faster prototyping, better test coverage, quicker first drafts. Almost none of them have changed the development life cycle itself, and that is where the real gains were for us. We spent the past 18 months rebuilding our product development life cycle around AI. Requirements, development, testing, security, deployment, and governance all changed, some beyond recognition. We got plenty wrong along the way, and a few of the lessons would have saved us months if someone had handed them to me at the start. We assumed most of the productivity gain would come from AI writing code faster. It didn’t. The biggest gains came from getting rid of the handoffs between stages. In the old model, a feature passed through at least four handoffs on its way out the door: product to development, development to QA, QA to security, and security to deployment operations. Each of those queues cost us time and context. A feature could be code complete in a day and then sit for two weeks waiting on teams that each had their own backlog and their own priorities. So, we restructured. A team now carries a feature end to end, and AI agents handle the rote work at each stage. A feature that used to take 15 days to go from spec to a working pull request now takes about four hours. If you take one thing from this article, measure the total time from idea to deployment rather than lines of code generated, and go find where the work sits idle. That is where the gains are hiding. Most engineering organizations add governance after the innovation has proven itself. We flipped that order. We build software for lawyers, where a wrong answer on high-stakes work can cost a client dearly, so moving fast and cleaning up later was never on the table. Before we scaled past the first pilot teams, we set standards for code review, security scanning, and quality on anything AI produced. Confidence scoring lets routine approvals pass through automatically while anything below threshold goes to a human. Security and quality gates run inside the pipeline itself rather than as a checkpoint at the end. What we didn’t expect was how much this sped up adoption. Engineers trusted the system, so nobody had to wonder whether code from an agent would pass review, introduce a vulnerability, or get them blamed when the model got something wrong. Eighteen months ago, about 3% of our pull requests had any AI assistance. Today it’s 68%, every engineer in the organization uses AI, and vulnerability density has fallen 76% over the same period. Governance came first and adoption followed, which is the opposite of the sequence most people assume. A better model or agent ships almost every week, and early on we burned real energy evaluating them. At some point we stopped and standardized on a small set of coding agents. Going deep paid off more than staying current. We learned the strengths and failure modes of our coding agents and tuned our workflows around how they actually behave, which matters more than whatever the next release promises. Teams that chase every new model spend all their time evaluating, and every switch resets the muscle memory and the trust they built with the last tool. They end up with a lot of pilots and not much change. The obvious place to point AI coding tools is at the coding. Some of our biggest wins came from the edges of the life cycle. We built or deployed dedicated agents for every stage: requirements, sprint planning, code generation, test authorship, security scanning, deployment, and site reliability. Each one owns a single job and gets measured on a single outcome. What makes it work is a centralized knowledge repository that product and engineering maintain together, a curated and structured knowledge base with retrieval-augmented generation https://www.infoworld.com/article/2335814/what-is-retrieval-augmented-generation-more-accurate-and-reliable-llms.html on top. Every agent pulls product context, domain rules, and prior decisions from that same source of truth, so what comes out of one stage is clean input for the next. Without it we would have a set of fast agents that lose the thread at every handoff. Requirements definition was the most dramatic early win. It used to take weeks. We built an agent that grills a raw product idea the way a tough stakeholder would, pushing on gaps until the spec is ready for development, and that phase now finishes in an afternoon. Testing moved even faster as quality engineers shifted their focus to optimizing and improving the agents that build tests. AI now generates 99% of our new tests, up from 47% a year ago, with more than 39,000 AI-developed tests in the suite, a number we could never have staffed our way to. Each test is generated directly against the code change it covers and checked against the functional requirements defined in the product requirements document, so growth in volume doesn’t come at the cost of traceability. Engineers spend their time reviewing, refining, and hardening what the system produces rather than writing first drafts, and that shift, from authoring tests to curating and strengthening them, is a big part of why quality improved while we sped up. We started with one area of the product development life cycle, got it right, then expanded. I would recommend that sequence to anyone. The key is to develop a model that can be expanded to the rest of the phases after experimenting on what works rather than trying to roll it out to every area and having to rebuild the framework later. We set a public and very specific goal: double R&D productivity in 12 months. It was uncomfortable, and there were stretches where I wasn’t sure we would make it. But a number that aggressive forced everyone to accept that incremental improvement wasn’t going to get us there, and we had to take apart old ways of working while the technology underneath was still maturing. We hit the goal inside the year, and output has kept climbing ever since. What I underestimated was how fast the bottleneck would move downstream. Once engineering sped up, the constraint moved to go to market. Every release still needs documentation, enablement content, briefings for customer success, and customers who are ready for what’s coming, and for a while we were shipping faster than any of that could keep up. We now treat go to market as its own automated phase of the life cycle, with the same agent-driven approach we applied to code and testing, and a simple rule that nothing ships until the rest of the organization can support it. If I were starting over, I would build that capacity from day one instead of finding out about it the hard way. The tools matter, but everyone can buy the same tools. What we actually did over these 18 months was redesign the system around AI: the way work flows between teams, the governance that lets people trust the output, the small set of tools we committed to, and a target aggressive enough to force all of it. Any one of those alone would have produced another interesting pilot. Together they produced a different engineering organization. None of this is finished. The models keep improving and the life cycle will keep changing with them. The organizational groundwork is what lets us absorb each improvement as it arrives, and for any technology leader still stuck at the pilot stage, that groundwork is where I would start. — New Tech Forum provides a venue for technology leaders—including vendors and other outside contributors—to explore and discuss emerging enterprise technology in unprecedented depth and breadth. The selection is subjective, based on our pick of the technologies we believe to be important and of greatest interest to InfoWorld readers. InfoWorld does not accept marketing collateral for publication and reserves the right to edit all contributed content. Send all inquiries to doug dineley@foundryco.com .