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I'm a Senior Backend & Platform Engineer with 10+ years of experience designing production APIs, distributed backend services, cloud infrastructure, and CI/CD automation. I’ve delivered backend architecture for blockchain transaction tracing and non-custodial crypto purchase workflows, and contributed to Okta/Auth0 identity platform features, data models, and release-quality pipelines. I’m hands-on with Python, Node.js, REST APIs, webhooks, AWS/GCP, Docker, Redis, MongoDB, PostgreSQL, and Linux/UNIX automation. I hold a Master’s in Computer Science focused on blockchain systems.…I'm a Senior Backend & Platform Engineer with 10+ years of experience designing production APIs, distributed backend services, cloud infrastructure, and CI/CD automation. I’ve delivered backend architecture for blockchain transaction tracing and non-custodial crypto purchase workflows, and contributed to Okta/Auth0 identity platform features, data models, and release-quality pipelines. I’m hands-on with Python, Node.js, REST APIs, webhooks, AWS/GCP, Docker, Redis, MongoDB, PostgreSQL, and Linux/UNIX automation. I hold a Master’s in Computer Science focused on blockchain systems.

Marco Maigua

Web Developer, Back-End Developer, Front-End Developer, +5

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I'm a Senior Backend & Platform Engineer with 10+ years of experience designing production APIs, distributed backend services, cloud infrastructure, and CI/CD automation. I’ve delivered backend architecture for blockchain transaction tracing and non-custodial crypto purchase workflows, and contributed to Okta/Auth0 identity platform features, data models, and release-quality pipelines. I’m hands-on with Python, Node.js, REST APIs, webhooks, AWS/GCP, Docker, Redis, MongoDB, PostgreSQL, and Linux/UNIX automation. I hold a Master’s in Computer Science focused on blockchain systems.…I'm a Senior Backend & Platform Engineer with 10+ years of experience designing production APIs, distributed backend services, cloud infrastructure, and CI/CD automation. I’ve delivered backend architecture for blockchain transaction tracing and non-custodial crypto purchase workflows, and contributed to Okta/Auth0 identity platform features, data models, and release-quality pipelines. I’m hands-on with Python, Node.js, REST APIs, webhooks, AWS/GCP, Docker, Redis, MongoDB, PostgreSQL, and Linux/UNIX automation. I hold a Master’s in Computer Science focused on blockchain systems.

Available to hire

I’m a Senior Backend & Platform Engineer with 10+ years of experience designing production APIs, distributed backend services, cloud infrastructure, and CI/CD automation. I’ve delivered backend architecture for blockchain transaction tracing and non-custodial crypto purchase workflows, and contributed to Okta/Auth0 identity platform features, data models, and release-quality pipelines.

I’m hands-on with Python, Node.js, REST APIs, webhooks, AWS/GCP, Docker, Redis, MongoDB, PostgreSQL, and Linux/UNIX automation. I hold a Master’s in Computer Science focused on blockchain systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Spanish; Castilian

Fluent

French

Intermediate

Work Experience

Senior Full Stack Engineer at Okta

September 1, 2025 - Present

Led the implementation of large-scale product features using React and modern JavaScript; collaborated with Product and Design to influence technical decisions and translate evolving requirements into scalable solutions; built and integrated REST APIs using Node.js and Python (FastAPI); improved frontend reliability by refining component architecture and optimizing data flows; contributed to code reviews, documentation, and complex bug fixes with a focus on security and maintainability; mentored junior engineers to raise overall team quality and delivery confidence.

Senior FullStack Engineer at Chain Myne

July 1, 2024 - September 1, 2025

Owned end-to-end delivery of customer-facing product features from design through development, testing, and release; built rich, data-driven user interfaces using React and JavaScript; developed backend functionality using Node.js and Python (FastAPI), exposing REST and GraphQL APIs consumed by frontend applications; participated in feature experimentation and A/B-style evaluations; wrote automated tests using Jest and Cypress; mentored teammates and contributed to technical planning and roadmap discussions; configured and maintained AWS services to support scalable, secure backend APIs.

Full Stack Engineer at Globel Eagle - Anuvu

April 1, 2021 - October 31, 2024

Developed and maintained web applications at scale, serving high-traffic, customer-facing platforms; specialized in frontend development using JavaScript, HTML, and CSS, with strong emphasis on maintainable UI architecture; integrated frontend applications with backend services via REST APIs; collaborated with designers to deliver polished, dynamic user experiences aligned with product goals; improved system reliability by diagnosing production issues and contributing fixes with performance and security in mind; supported junior engineers through reviews and knowledge sharing.

Full Stack Developer at Instawalkin Inc.

August 1, 2020 - March 31, 2021

Acted as lead architect and primary developer for a startup's appointment booking platform, defining the full tech stack and business logic from backend to cloud; implemented the MVP using Laravel (PHP) for the backend, React/Redux for the frontend, and Google Cloud for infrastructure; integrated third-party APIs for scheduling (Timekit) and payments (Stripe) to deliver core booking and transaction functionality; guided technical needs across development, testing, deployment, and client support for early-stage product.

Junior Software Developer at Bayteq CIA

January 1, 2016 - July 31, 2017

Designed and developed Android applications for clients across banking, retail, and pharmaceutical industries; implemented a secure banking authentication module with controlled in-app browser navigation; maintained and enhanced a Knockout.js frontend application for a pharmaceutical client, integrating with REST APIs to manage and display dynamic data; developed a scalable data replication system using Java and SQL to synchronize enterprise databases across multiple REST APIs.

Full Stack Software Developer at Okta

November 1, 2025 - March 1, 2026

Architected and implemented middleware logic for Okta Universal Login, redesigned JWT handling, migrated MongoDB entities, coordinated cross-team production updates and safeguards across CI, and applied advanced authentication and cybersecurity practices including DPoP, MFA, and mTLS to strengthen security.

Full Stack - Blockchain Developer at ChainMyne

November 1, 2024 - November 1, 2025

Architected Golang concurrency modules for high-volume on-chain/off-chain transactions; implemented AWS Nitro Enclaves with CMK management; integrated Fireblocks REST APIs and real-time event webhooks; built a Telegram trading chatbot and data ingestion services to improve pricing and risk visibility.

Blockchain Developer at Remote Consulting

April 1, 2024 - November 1, 2024

Built Crew AI agents for retail workflows, developed a Solana arbitrage bot using Orca SDK, Meteora API and Raydium API; designed a DAO voting platform on BSV with sCrypt contracts; maintained ERC20/ERC721 apps and IPFS/OpenSea integrations; audited Solidity contracts with OpenZeppelin.

Back End Developer at Global Eagle - Anuvu

April 1, 2021 - April 1, 2024

Developed and refactored Python REST APIs for in-flight entertainment and passenger apps; integrated Redis/Memcached for caching; automated maintenance and deployment pipelines; Dockerized services and monitored performance with Grafana.

Full Stack Developer at DistrictM

August 1, 2020 - March 1, 2021

Front-end development with React, serverless AWS SAM, S3, Athena, Lambda; improved deployment workflows with Drone; integrated Beeswax AdTech APIs for ad exchanges; implemented data-driven dashboards.

Software Architect at NobleProg IT Training Services

November 1, 2019 - August 1, 2020

Integrated open-source projects into education products; managed UNIX LXC/KVM infra; built a speech-to-text Node.js backend with Google Cloud; added LDAP and CAS authentication; CI/CD with GitLab; AWS S3 storage for slides.

Full Stack Developer - Lead Software Architect at Instawalkin Inc

July 1, 2019 - October 1, 2019

Implemented a speech-recognition backend with Google Cloud Speech-to-Text; extended open-source projects with LDAP/CAS auth; modernized a course CMS with Rails and AWS S3; maintained UNIX-based LXC/KVM infra and automated CI/CD through GitLab.

Research Intern at Membran Labs

March 1, 2018 - December 1, 2018

Developed a transaction system for distributing payments of digital assets using Hyperledger Fabric and Hyperledger Composer; built Ionic (Angular.js) frontend for the backend solution.

Back End Developer - Software Architect - Software Developer Junior at Bayteq CIA

January 1, 2016 - July 1, 2017

Developed Android banking apps; implemented material design, authentication flows; maintained Knockout.js frontend and data replication across Java-SQL back-ends; mentored junior developers.

Lead Software Developer (Linguistics Dept) at University of Saskatchewan

September 1, 2017 - September 1, 2019

Led a team to deliver a job-board web app; designed Media Lengua documentation platform with Firebase and React; lectured web development topics and supported labs; graded CS assignments.

Full Stack Developer at ChainMyne

November 1, 2024 - October 1, 2025

Led backend architecture for on-chain and off-chain blockchain transaction tracing systems. Integrated Fireblocks REST APIs and webhooks for event-driven transaction monitoring. Built Python REST API services for Solana and Ethereum trading chatbot integrations and coordinated data flows with CoinGecko and Kraken APIs. Designed backend for a non-custodial crypto purchase platform across mobile and web clients; maintained Python FastAPI services and multi-server production support; automated database maintenance and release workflows with Docker-based infrastructure.

Blockchain Developer at Upwork (Consultant)

July 1, 2024 - November 1, 2024

Built backend algorithms for detecting liquidity-pool changes across Solana DEX token pairs and integrated DEX data feeds to calculate swap-fee differences for automated arbitrage workflows. Designed and implemented backend architecture for a DAO voting application using sCrypt, BSV, HandCash, React, and Node.js; restored and extended ERC20 buy/sell/swap workflows; tested and deployed smart contracts on Sepolia/Infura; integrated NFT platform workflows with OpenSea, IPFS Pinata, MongoDB, and scheduled blockchain synchronization jobs.

Backend Developer at Global Eagle

April 1, 2021 - October 1, 2024

Integrated Redis caching for UNIX-based systems to improve backend data-access patterns and reduce reliance on slow lookups. Developed and maintained backend APIs across multi-server production infrastructure; automated UNIX system maintenance with Python scripts and scheduled jobs; managed client data workflows with AWS S3 and Boto3; engineered Jenkins CI/CD pipelines; deployed Docker containers; diagnosed production issues involving Memcached and Whoosh search services.

Full Stack Engineer at DistrictM

August 1, 2020 - March 1, 2021

Designed end-to-end application architecture with React, Redux, Laravel, and Google Cloud services; developed backend APIs integrating Stripe payments and Timekit scheduling; implemented Python TDD and coverage-based validation to improve reliability; supported Agile delivery with Jira and Drone CI automation.

Software Developer at NobleProg

November 1, 2019 - August 1, 2020

Managed KVM and LXC virtualized environments to improve reliability; integrated LDAP and CAS authentication into open-source systems; deployed multi-region AWS environments with automated database replication and backup strategies; built GitLab CI/CD pipelines for software releases.

Full Stack Engineer at Instawalkin

July 1, 2019 - November 1, 2019

Designed end-to-end application architecture with React, Redux, Laravel, and Google Cloud services; implemented backend APIs for Stripe payments and Timekit scheduling; developed and tested backend APIs using Python TDD; supported Agile delivery with Jira and Drone CI automation.

Lead Developer, Blockchain Researcher at Membran Entertainment Group

November 1, 2017 - December 1, 2018

Developed a blockchain-based payment distribution system with Hyperledger Fabric and Hyperledger Composer; built Ionic-based interfaces for decentralized services; maintained ERC20 features and integrated MetaMask, Alchemy, OpenZeppelin, and Ethereum test networks; developed ERC721 contracts for real estate NFT ownership and fractionalization; connected Web3.js backend endpoints to deployed contracts; audited Solidity and TRON contracts with OpenZeppelin patterns.

Software Developer at BAYTEQ Cia. Ltda

March 1, 2015 - September 1, 2017

Architected reusable Android prototypes with shared web services and configurable UI components; developed Java-based data-transmission features; collaborated to optimize SQL databases and backend logic for enterprise systems.

Web Developer and RFID Systems Technician at UPDATECOM

September 1, 2015 - December 1, 2015

Integrated web application components with RFID security, access-control, camera monitoring, and server administration workflows; supported installation, maintenance, and web integration for physical security deployments.