The context
When Modulr set out to modernize their aging platform, they faced a familiar tension: move fast enough to stay competitive, but without destabilizing a system millions of users relied on every day. Parser embedded a nearshore squad directly into their engineering org, working as one team rather than an outside vendor. Over five months, we re-architected the core services, streamlined the CI/CD pipeline, and introduced automated testing that gave the team confidence to ship more often.
The approach
Modulr platform had served them well for years, but growth had outpaced its architecture. Release cycles were slowing, small changes carried outsized risk, and the engineering team spent more time maintaining legacy systems than building new features. They needed to modernize without disrupting a service millions of users depended on daily — and they needed to move quickly, without sacrificing reliability or quality.
The impact
Rather than operating as an outside vendor, Parser embedded a nearshore squad directly into Modulr's engineering org, working within their existing rituals, tools, and codebase so the two teams functioned as one. We started by mapping the highest-risk areas of the legacy platform and prioritizing the changes that would unlock the most value soonest — modernizing incrementally rather than attempting a risky big-bang rewrite.
From there, we re-architected the core services, introduced automated testing to give the team confidence to ship, and streamlined the CI/CD pipeline to shorten the path from commit to production. Throughout, we paired closely with Modulr's in-house engineers, sharing practices and context as we went, so that knowledge stayed with the team rather than leaving with us. Regular demos and tight feedback loops kept stakeholders aligned and let us course-correct early, keeping the work moving without losing sight of quality.
