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Samuel LadiSL
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Samuel Ladi

@samuelladi

Senior full-stack engineer architecting enterprise fintech and SaaS platforms on AWS.

Nigeria
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What I'm looking for

I’m looking to lead end-to-end delivery on cloud-native products—designing secure, high-performance APIs and microservices, mentoring engineers, and building reliable systems for fintech, SaaS, or blockchain.

I’m a Senior Full Stack Engineer with a proven record of architecting and delivering large-scale, enterprise-grade platforms across fintech and SaaS. I’m expert in Python (Django, Django REST Framework) and modern JavaScript ecosystems (React, Next.js, Node.js), and I build cloud-native, microservices-driven systems on AWS.

At FiftyX, I architected and led a high-availability cryptocurrency trading platform supporting 50k+ active traders and 10k+ trades per minute. I designed fault-tolerant, concurrency-safe transaction and order processing with idempotent APIs and real-time reconciliation, then redesigned backend and API architecture to improve throughput and latency by 45%.

I also own high-performance user experiences—most recently as a Senior Frontend Engineer at LeadCourt—building analytics dashboards, advanced search, and filtering workflows for 100M+ professional records. Earlier, as a Technical Mentor & Staff Engineer at Parach ICT Academy, I mentored developers and delivered workshops to institutionalize TDD, version control workflows, and CI/CD pipelines.

Across independent contracts, I’ve served as a primary technical authority, leading system architecture and technical strategy for fintech, education, and logistics. I engineer secure, highly available multi-tenant SaaS systems, define service boundaries and data models, reduce system latency by 30%+, and I stay focused on resilient, secure delivery—backed by strong DevOps practices and distributed-systems thinking.

Experience

Work history, roles, and key accomplishments

FiftyX logoFI
Current

Senior Full Stack Engineer

FiftyX

Jun 2024 - Present (2 years)

Architected and led a high-availability cryptocurrency trading platform supporting 50k+ active traders and 10k+ trades per minute. Improved backend/API throughput and latency by 45% using asynchronous processing, caching, load balancing, and queue-based workflows, while implementing fault-tolerant, concurrency-safe transaction and order processing.

PA
Current

Technical Mentor & Staff

Parach ICT Academy

Jan 2021 - Present (5 years 5 months)

Mentored junior developers and interns by designing structured learning paths in web development and full-stack engineering best practices. Delivered workshops and coached learners through code reviews, TDD, version control workflows, and CI/CD practices to improve code quality and professional readiness.

IC
Current

Full-Stack Systems Architect

Independent Contracts

Feb 2019 - Present (7 years 4 months)

Architected production-grade platforms for fintech, education, and logistics, defining service boundaries, data models, and distributed system designs for scalability and maintainability. Engineered high-performance API ecosystems and integration layers, reducing system latency by 30%+ and delivering multi-tenant SaaS infrastructures for thousands of concurrent users.

LeadCourt logoLE

Senior Frontend Engineer

LeadCourt

Feb 2025 - Aug 2025 (6 months)

Owned frontend architecture for a B2B lead intelligence platform serving analytics dashboards and search/filter experiences across 100M+ professional records. Improved rendering and data-loading strategies to reduce page load times, and partnered with backend/product teams to define robust API consumption and real-time data pipeline patterns.

Education

Degrees, certifications, and relevant coursework

AA

AWS Certified Developer – Associate

AWS Certified Developer – Associate, AWS

AWS Certified Developer – Associate (in progress).

University of Ibadan logoUI

University of Ibadan

Bachelor of Science, Political Science

Earned a Bachelor of Science in Political Science from the University of Ibadan.

TI

The Polytechnic, Ibadan

National Diploma, Local Government Studies

Completed a National Diploma in Local Government Studies at The Polytechnic, Ibadan.

Udemy logoUD

Udemy

Web Development Bootcamp Certification, Web Development

Completed a Web Development Bootcamp certification on Udemy.

PA

Parach ICT Academy

Software Development Certification, Software Development

Completed a certification in Software Development from Parach ICT Academy.

OC

Online Course

Docker & Kubernetes Mastery Certification, Docker & Kubernetes

Completed a Docker & Kubernetes mastery certification through an online course.

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