Limestone Digital

Limestone Digital is a Czech-based software engineering firm founded around 2015 (specific founding year not stated in source). Led by founder and CEO Mark Ajzenstadt, the company operates from Prague with delivery locations across Europe and the US, including offices in Kyiv, Barcelona, and Los Angeles. The team numbers in the range of 51–200 engineers. The company positions itself as a "Velocity Partner" rather than a traditional body shop, focusing on restoring delivery speed and predictability to engineering teams that have stalled or been let down by existing vendors.

Services and capabilities

Limestone Digital's core offering centers on Velocity Pods™—two-person strike units pairing a Senior Engineer with a Delivery Architect. Each pod operates with 4–6 hours of daily overlap, daily standups, weekly demos, and on-call support. Pods are deployed either alongside existing in-house teams or to replace underperforming external vendors. The company guarantees a minimum 15% uplift in delivery velocity within 60 days, or clients don't pay.

The engagement is underpinned by what Limestone calls its Velocity Framework™—a combination of measurement, process, and AI-assisted tooling. The framework uses developer-intelligence tools to capture DORA-style metrics: lead time, deploy frequency, change-fail rate, and mean time to recovery (MTTR). Workflows incorporate AI code-intel, test harnesses, CI/CD hooks, and trunk-based development. A principal architect conducts quality-gate reviews before merge. The company reports typical outcomes of 20–40% faster delivery, 20–40% lower burn, and less-than-90-day payback on engagement cost. Annually, clients typically unlock $150k–$600k in new delivery capacity.

For teams replacing a slow vendor, Limestone offers a structured 30-day rescue path: within 5 days, repository ownership and CI/CD access are normalized; within 10 days, a critical-path release plan is live with stakeholder dashboards; by day 30, the first increment ships with verified velocity uplift measured against baseline.

Notable work

Three named clients appear in testimonials. Johnson Controls engaged Limestone to modernize a complex industrial control ecosystem without disrupting legacy infrastructure. According to the company's engineering leadership, Limestone shaped requirements from day one and delivered a modular, future-ready solution that integrates with existing hardware. The team remained stable through acquisitions and personnel changes.

Labcoat's founders (Joe Evans and Chris Carroll) describe Limestone as a "true technology partner, not a vendor." Limestone embedded deeply to deliver a custom software platform as Labcoat expanded into a new industry, taking shared ownership of both technical execution and product vision.

Prodege's CTO Shane O'Neill and SVP Technology Peretz Hildeshaim credit Limestone with combining engineering excellence and delivery velocity—including rapid talent recruitment, consistent performance under pressure, and seamless integration into Prodege's workflow with strict security practices.

Measurable results from specific engagements include: a logistics platform that achieved 42% faster lead time and $160k annualized value in two months; a martech platform with 85% incident rate reduction in three months; and an industrial software client with 35% faster cycles and 40% higher sprint predictability.

How they work

Engagements follow a structured nine-week cycle. Weeks 1–2 (Baseline & Diagnose) involve integrating developer-intelligence tools and capturing baseline metrics to identify bottlenecks. Weeks 3–6 (Deploy & Uplift) insert a Velocity Pod, retune planning, code review, tests, and release processes, then apply AI accelerators and measure weekly. Weeks 7–9 (Prove & Scale) validate uplift with ROI dashboards, deliver playbooks, and conduct governance reviews. All work is tracked on client dashboards with live DORA metrics, CapEx vs. OpEx efficiency breakdowns, and quarterly velocity trendlines. Limestone offers a free, 45-minute Velocity Diagnostic with no commitment, during which they baseline uplift potential and outline how one pod can restore measurable flow in 30 days.

Team and credentials

Leadership includes Mark Ajzenstadt (Founder & CEO, Prague), Anatolii Kramarenko (Chief Operating Officer, Prague), Kate Kuzmenko (VP Human Resources, Prague), Viktoriia Lapa (Chief Financial Officer, Kyiv), Anastasiia Milokhina (Head of Design, Barcelona), and Levy Lieberman (Partner, Head of MarTech, Los Angeles). No formal certifications (ISO, SOC 2, etc.) are mentioned in the source. The company emphasizes five core values: radical transparency, idea meritocracy, acceptance of mistakes, problem ownership, and constructive criticism.