Rodrigo
Oler
CTO · Senior Engineer · 4x Co-Founder · 3x CTO · Open Source
CTO and co-founder with 14+ years building payment infrastructure that has to be correct. Today I run technology at PrismaPay and take Principal-level engineering into other fintechs, with earlier CTO seats at Onda Finance and Brokerse.
Where I've shipped.
Selected roles across product, consulting, and embedded engineering. Full history is on LinkedIn and the CV.
Own technology end to end for a Brazilian digital account and BaaS platform: architecture, security, and the technical side of Central Bank regulation. Took the product from fiat to fiat plus crypto with custody and sanctions screening.
Architecture of the core banking and BaaS platform: append-only double-entry ledger, idempotent money flows, fiat and crypto rails, and KYC, KYB, AML and KYT modeled as blocking states.
Rebuilt the platform's v2 from scratch and built the multi-tenant payment gateway designed for $100M+ in projected volume, with an append-only ledger and an async event pipeline for webhooks.
Equity-holding co-founder advising on fundraising, investor conversations and product direction, plus architecture decisions for the platform I originally built.
Founding engineer of the platform: microservices with REST APIs, a NestJS backend on PostgreSQL and AWS RDS, Angular Universal for SSR, and CircleCI pipelines for staging and production.
Took a high-frequency OTC platform to more than $200M in settled volume and owned the technical direction of the group: banking and crypto rails, integration between both products, and the consolidation with Brokerse.
Co-founded Brokerse and led its technology for seven years, from the first line of code to the exit: a crypto investment platform with copy and social trading, later an OTC desk with an RFQ flow for large orders.
Tools I think in.
Core technologies I use daily to design, build, and ship.
Things I've built.
A curated selection of products and platforms.
High-frequency OTC trading platform handling PIX/USD/USDT settlements. Scaled from 0 to $200M+ in volume with zero downtime, event-driven architecture.
Brazilian digital account and BaaS platform: PIX, boleto and TED plus crypto with custody and sanctions screening, a partner API for B2B clients, and a ledger reconciled against the bank.
Low-latency trading engine with CCXT for real-time OTC and copy-trade across major liquidity providers including Binance.
Projects I keep public.
Open-source work that shows product thinking, engineering rigor, and a bias for shipping useful tools. Raxion is a solo-founder effort; Try-TypeScript is partially open source.
Solo-founder project. Sovereign SVM rollup on Solana focused on verifiable AI inference quality through PoIQ, statistical convergence, stochastic verification, and slashing. Active since Jan 2026.
Partial open source TypeScript learning platform with 150+ interactive lessons, real-time execution, bilingual support, and a current push toward younger and children-focused education.
Open-source multi-driver database tool for browsing and working with different data sources in one place.
What people say after working with me.
All the recommendations you shared, ordered with the strongest leadership signals first. Scroll sideways to see the rest.
I worked with Rodrigo at the beginning of his career, and it was already clear he would grow into a strong technical leader. What stood out early was how quickly he connected architecture decisions to real business needs and how naturally he took ownership of complex problems instead of just making it work. He also brought a practical mindset around crypto, blockchain, and AI, always sharing what he learned in a useful way.
Oler has the right profile for complex challenges and leadership projects. He combines a strong engineering mindset with the ability to make hard decisions under pressure, and he is consistently willing to help others grow through mentoring and hands-on support.
I'm glad I had the chance to work with Oler. He is an exceptional developer and genuinely passionate about technology. Working with him made me a better professional, because he pushes the team to raise the bar without losing clarity.
Oler is an excellent developer: proactive, dedicated, and always suggesting strong ideas to solve problems quickly. He is the kind of person who helps the team move faster without creating noise.
Rodrigo is a highly competent engineer with strong skills across development and project management. He has the kind of technical breadth that makes execution easier across different kinds of teams.
Oler is an excellent professional to work with, with strong mobile and web development skills. He is also funny, positive under pressure, and easy to work with on demanding projects.
Oler is a great developer: smart, fast at solving complex problems, and always eager to help the team when needed. His curiosity around new technology stands out.
Rodrigo is a great partner: smart, hardworking, and always focused on solving problems in the best possible way. He brings the kind of mindset that makes collaboration easy.
Rodrigo is a dedicated and responsible professional who was always willing to go beyond what had been taught, showing real initiative and growth mindset.
He is creative, attentive, and committed to delivering what was asked with care. He also has a good instinct for turning open problems into practical outcomes.
Rodrigo is an excellent professional: strong across multiple languages, always helpful, and a reliable team partner when the team needs support.
He was a dedicated and responsible student who was eager to keep learning and growing beyond what was taught in class.
Rodrigo is well-focused, has a very strong logical mindset, and was excellent to work with on mobile development and problem solving.
An excellent professional and a pleasure to work with on projects. He is always willing to help the team with dedication and good ideas.
Rodrigo is highly capable, solves complex problems quickly, and helps the team whenever needed. He learns new technology fast and keeps a strong curiosity for improving things.
A very competent professional with strong knowledge across development and project management.
Oler is collaborative, focused, and innovative. I had the privilege of graduating with him and seeing his growth first-hand.
Very detail-oriented, fast, and highly responsive in execution.
Rodrigo is a great friend and a problem solver who works through issues the right way, with patience and good judgment.
An excellent student and professional who was always helpful when questions came up and willing to share what he knew.
Let's build something worth shipping.
Open to senior/lead engineering roles, founding teams, selective consulting, and open-source collaborations. Remote preferred.