[ Industry case study — Custom Software ]
Rails consolidation delivers 50% faster releases for Vestmark
thoughtbot embedded senior engineers with Vestmark to consolidate services into a Rails monolith, cutting deployment pipelines by 92% while upskilling the team.
Original project by thoughtbot ↗Industry reference — not a NexSum Labs engagement.
- Client
- Vestmark
- Industry
- Financial technology / wealth management
- Services
- Ruby on Rails development, Architecture consolidation, Team mentorship, CI/CD simplification
- Year
- 2026
The client
Vestmark builds software used by financial institutions and advisors. Its engineering team set out to consolidate functionality from several applications and rebuild a critical product as a Ruby on Rails monolith.
The challenge
Vestmark had strong engineers but limited in-house Rails experience for the new technical direction. Delivery timelines were tight and tied to executive expectations. The team needed to move quickly without piling up technical debt, while also upskilling internal engineers as they shipped real product.
The solution
01Embedded senior engineers
thoughtbot engineers worked directly inside Vestmark's production systems, leading by example rather than only advising.
02Service consolidation
The teams merged separate services into a single, unified Rails application with clear architectural patterns and testing practices.
03One deploy instead of twelve
Deployment complexity was reduced by moving from twelve CI/CD pipelines to a single deploy.
04Mentorship through pairing
Pairing, code reviews and shared ownership helped Vestmark engineers understand why practices matter, balancing deadlines with long-term maintainability.
The results
Vestmark hit its deadlines while delivering 50% faster and running 92% fewer deployment pipelines, with no net-new technical debt. The company now works with clearer architectural standards and faster iteration cycles. Its team is better equipped to make confident technical decisions under pressure.
“thoughtbot didn’t just tell us how to do things, they showed us why you should do it. That’s what makes people adopt faster.”
Tools & stack
Original project by thoughtbot ↗ — published by the delivering agency, included here as an industry reference.
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