MercadoPago: Staff augmentation for Latam's biggest Fintech
About The Client
Fintech leader Mercado Pago dominates digital payments across Latin America. In 2021 it bought Chilean POS specialist Redelcom, inheriting a Ruby-on-Rails monolith that already served 65 000+ merchants. Across the wider region, Mercado Pago ships >1 million smart terminals per quarter—scale that demands bullet-proof uptime.
Copy link
The Opportunity
The mandate: re-platform Redelcom’s Rails codebase into Mercado Pago’s Golang micro-service mesh without a single minute of merchant downtime, all while adding support for QR-payments and next-day settlement.
The Solution
Zone-Defense Refactor – Stripped the 220 k-LOC Rails app into 11 bounded-context services, exposing gRPC + REST endpoints.
Blue/Green & Canary Kicks – Built GitLab-CI pipelines with feature flags; traffic was shifted 10 % at a time until 100 %, ensuring zero-downtime cut-over.
Peak-Load Conditioning – Added Kafka event streams and horizontal-autoscale pods, doubling throughput headroom to 2 k TPS.
Omnichannel Scoreboard – New reconciliation service aggregated e-commerce + POS sales, surfacing real-time dashboards for 65 k merchants.
Defence-in-Depth Hardening – Implemented tokenised PAN storage, HSM-backed signing and enclave-sealed secrets to meet PCI DSS v4.
The Impact
KPI | Before | After | Value-Add |
|---|---|---|---|
Merchant onboarding latency | 48 h | 30 h | Faster revenue capture for SMEs |
Peak TPS on POS API | 1.2 k | 2.0 k | Ready for Black-Friday spikes |
Platform availability | 99.90 % | 99.98 % | Aligns with Mercado Pago SLA |
More of our work
See All Work
![](data:image/svg+xml,<svg display="block" role="presentation" viewBox="0 0 118 19" xmlns="http://www.w3.org/2000/svg"><path d="M 6.981 0.624 C 12.468 0.624 15.698 3.901 15.698 9.717 C 15.698 15.533 12.468 18.949 6.981 18.949 L 0 18.949 L 0 0.624 Z M 3.826 15.771 L 6.525 15.771 C 9.946 15.771 11.798 13.689 11.798 9.725 C 11.798 5.76 9.895 3.782 6.525 3.782 L 3.826 3.782 Z M 29.926 14.782 C 29.522 17.447 27.088 19.239 23.73 19.239 C 19.548 19.239 17.038 16.557 17.038 12.204 C 17.038 7.85 19.572 5.041 23.591 5.041 C 27.611 5.041 30.041 7.723 30.041 11.862 L 30.041 12.994 L 20.677 12.994 L 20.677 13.225 C 20.677 15.167 21.906 16.502 23.793 16.502 C 25.149 16.502 26.188 15.83 26.533 14.786 L 29.93 14.786 Z M 20.713 10.718 L 26.477 10.718 C 26.402 8.978 25.272 7.786 23.627 7.786 C 21.982 7.786 20.84 9.018 20.713 10.718 Z M 34.667 18.945 L 29.966 5.331 L 33.934 5.331 L 36.761 15.668 L 36.836 15.668 L 39.65 5.331 L 43.516 5.331 L 38.854 18.945 Z M 56.284 14.782 C 55.88 17.447 53.446 19.239 50.088 19.239 C 45.906 19.239 43.397 16.557 43.397 12.204 C 43.397 7.85 45.93 5.041 49.95 5.041 C 53.969 5.041 56.399 7.723 56.399 11.862 L 56.399 12.994 L 47.036 12.994 L 47.036 13.225 C 47.036 15.167 48.265 16.502 50.152 16.502 C 51.508 16.502 52.546 15.83 52.887 14.786 L 56.284 14.786 Z M 47.072 10.718 L 52.836 10.718 C 52.76 8.978 51.63 7.786 49.985 7.786 C 48.34 7.786 47.198 9.018 47.072 10.718 Z M 61.363 0.624 L 65.061 0.624 L 60.161 18.949 L 56.463 18.949 Z M 63.44 15.036 C 63.44 12.561 65.339 11.123 68.724 10.92 L 72.145 10.718 L 72.145 9.816 C 72.145 8.545 71.257 7.81 69.866 7.81 C 68.475 7.81 67.61 8.497 67.432 9.498 L 64.046 9.498 C 64.185 6.857 66.429 5.041 70.028 5.041 C 73.628 5.041 75.781 6.845 75.781 9.586 L 75.781 18.945 L 72.209 18.945 L 72.209 16.863 L 72.134 16.863 C 71.372 18.309 69.688 19.163 67.991 19.163 C 65.406 19.163 63.44 17.487 63.44 15.036 Z M 72.149 12.966 L 69.287 13.145 C 67.908 13.248 67.119 13.868 67.119 14.833 C 67.119 15.85 67.955 16.486 69.208 16.486 C 70.817 16.486 72.149 15.433 72.149 13.959 Z M 82.417 5.335 L 84.926 5.335 L 84.926 8.128 L 82.417 8.128 L 82.417 14.643 C 82.417 15.683 82.924 16.18 84.014 16.18 C 84.343 16.18 84.684 16.156 84.914 16.116 L 84.914 18.846 C 84.534 18.933 83.899 18.997 83.154 18.997 C 79.959 18.997 78.718 17.928 78.718 15.274 L 78.718 8.124 L 76.803 8.124 L 76.803 5.331 L 78.718 5.331 L 78.718 2.193 L 82.417 2.193 Z M 86.353 1.919 C 86.353 0.838 87.213 0 88.331 0 C 89.449 0 90.31 0.838 90.31 1.919 C 90.31 2.999 89.449 3.838 88.331 3.838 C 87.213 3.838 86.353 2.987 86.353 1.919 Z M 86.48 5.335 L 90.179 5.335 L 90.179 18.949 L 86.48 18.949 Z M 95.911 18.945 L 91.209 5.331 L 95.178 5.331 L 98.004 15.668 L 98.079 15.668 L 100.894 5.331 L 104.759 5.331 L 100.097 18.945 Z M 117.529 14.782 C 117.124 17.447 114.69 19.239 111.332 19.239 C 107.15 19.239 104.64 16.557 104.64 12.204 C 104.64 7.85 107.173 5.041 111.193 5.041 C 115.213 5.041 117.643 7.723 117.643 11.862 L 117.643 12.994 L 108.279 12.994 L 108.279 13.225 C 108.279 15.167 109.508 16.502 111.395 16.502 C 112.751 16.502 113.79 15.83 114.135 14.786 L 117.533 14.786 Z M 108.315 10.718 L 114.079 10.718 C 114.004 8.978 112.874 7.786 111.229 7.786 C 109.584 7.786 108.442 9.018 108.315 10.718 Z" fill="rgb(47, 47, 47)" height="19.238862472403255px" id="LTK0TvKkz" width="117.64307170739897px"/></svg>)
