Jhonattan is available for hire

Jhonattan Manrique

Verified Expert in Engineering

Software Developer

Medellín - Antioquia, Colombia

Toptal member since March 20, 2024

Expertise

Back-end Developers Web Development Full-stack Golang C#Bitcoin GitHub REST API SQL JavaScript Git Docker

Bio

Jhonattan is a dynamic developer with a solid track record of 13 years in the industry. He enjoys software design, programming languages, and tackling complex problems, gaining extensive experience with various programming tools and technologies. Jhonattan's expertise includes Go, C#, Rust, distributed systems, microservices, streaming data tools, and cloud platforms like AWS, GCP, and DigitalOcean.

Portfolio

Freelance Clients

Go, Rust, Solana, PostgreSQL, Svelte, SvelteKit, Blockchain, Web3.js...

StreamingFast Platform Inc.

Go, React, Next.js, Google Cloud Platform (GCP), Kubernetes, Terraform, OpenAI...

ShelterZoom

Go, MongoDB, Kubernetes, Amazon EKS, Docker, GitLab CI/CD, Helm, Apache Kafka...

Experience

Go - 5 years
C# - 5 years
PostgreSQL - 3 years
Docker - 3 years
Svelte - 1 year
Kubernetes - 1 year
MongoDB - 1 year
Rust - 1 year

Availability

Full-time

Preferred Environment

Go, Rust

The most amazing...

...thing I've built is a high-traffic transactional backup portal for enterprise payments that significantly reduced downtime to near zero.

Work Experience

Senior Software Engineer

2023 - PRESENT

Freelance Clients

Engineered a comprehensive salon management system using Go and SvelteKit, which over 50 salons adopted within the 1st quarter.
Developed an esports betting proof of concept on the Internet Computer Protocol (ICP) network using Rust for canister development.
Enhanced functionality of a Go CLI tool through usability and optimization.

Technologies: Go, Rust, Solana, PostgreSQL, Svelte, SvelteKit, Blockchain, Web3.js, Decentralized Finance (DeFi), JavaScript, APIs, CI/CD Pipelines, Architecture, Full-stack, Technical Leadership, TypeScript, Software Architecture, Leadership, Tailwind CSS, Back-end, Cryptocurrency, SQL, Amazon DynamoDB, Amazon, Amazon S3 (AWS S3), Redis, Google Cloud Platform (GCP), OpenAI, Web Development, Solution Architecture, Dart, Flutter, CSS, HTML, Back-end Development, MySQL, Git, LangChain, Distributed Systems, Temporal, FFmpeg, Web3, Full-stack Development, REST APIs, GitHub

Senior Full-stack Developer

2024 - 2024

StreamingFast Platform Inc.

Implemented new features for a freight management system startup using Go, GRPC, GCP, pub/sub, modular monolith, and LLMs.
Researched and implemented TMS integrations and Chrome extensions good practices.
Optimized data loading from the back end using Go's concurrency tools.

Technologies: Go, React, Next.js, Google Cloud Platform (GCP), Kubernetes, Terraform, OpenAI, GitHub

Senior Software Engineer

2023 - 2023

ShelterZoom

Contributed successfully to migrating Node.js services to Go, ensuring a smooth transition and improved performance.
Maintained a distributed microservices architecture proactively, guaranteeing optimal functionality and minimizing downtime.
Demonstrated expertise in utilizing Go, Kafka, MongoDB, and Kubernetes to develop and enhance the platform.

Technologies: Go, MongoDB, Kubernetes, Amazon EKS, Docker, GitLab CI/CD, Helm, Apache Kafka, Microservices, CI/CD Pipelines, Back-end, Cryptocurrency, SQL, Amazon, Blockchain & Cryptocurrency, DevOps, Back-end Development, Amazon Elastic Container Service (ECS), Git, Distributed Systems, APIs, REST APIs, GitHub

Senior Software Engineer

2022 - 2022

Billard365

Developed a streaming service using Rust to distribute real-time CCTV streams to the billiard software.
Enhanced the user experience with the service by providing live footage in low-cost hardware using Rust capabilities.
Researched different platforms extensively, including Node.js, .NET, Go, and Rust, to select the best tool for the platform.

Technologies: Go, Rust, Videos, API Integration, APIs, CI/CD Pipelines, Architecture, Full-stack, Software Architecture, Leadership, Back-end, SQL, Solution Architecture, DevOps, Back-end Development, Git, Distributed Systems, Full-stack Development, REST APIs, GitHub

Senior Software Engineer

2020 - 2022

Fluid Chains

Built and maintained a distributed microservices architecture, significantly improving system modularity and reducing dependencies between components.
Created a block explorer using Nako, an unspent transaction output (UTXO) indexer, and MongoDB, enhancing the system's ability to index and search transactions on the blockchain.
Developed DADA, a payment and AirDrop processor based on UTXO blockchains, which streamlined transactions and improved AirDrops' efficiency.
Implemented Chertero, a system for issuing certificates based on the Blockcerts standard, providing a secure and verifiable method of issuing digital credentials.
Constructed a token bridge and Uniswap liquidity provider. This gateway aimed to facilitate seamless token transfers and improved liquidity.
Showcased versatility in a startup environment in the face of diverse technical challenges in handling various technologies like .NET, Go, Rust, Python, React, AWS, and different blockchain protocols like Bitcoin, Ethereum, and Solana.

Technologies: C#, Go, Rust, Next.js, Bitcoin, Ethereum, Solana, Amazon Web Services (AWS), DigitalOcean, Python, PostgreSQL, RabbitMQ, Apache Kafka, MongoDB, Blockchain, .NET, React, Microservices, Web3.js, Node.js, Decentralized Finance (DeFi), JavaScript, API Integration, APIs, CI/CD Pipelines, Architecture, Full-stack, Technical Leadership, TypeScript, Software Architecture, Leadership, Tailwind CSS, Back-end, Cryptocurrency, SQL, Amazon, Redis, Web Development, Mobile Development, Solution Architecture, Blockchain & Cryptocurrency, Dart, Flutter, CSS, HTML, DevOps, Back-end Development, MySQL, Amazon Elastic Container Service (ECS), Git, Distributed Systems, Web3, Full-stack Development, Event-driven Architecture, REST APIs, GitHub Actions

Senior Software Engineer

2019 - 2019

PriceTravel

Built new microservices using Go, leveraging a serverless architecture with AWS Lambda, API Gateways, Amazon Aurora, and Amazon Kinesis.
Showcased proficiency in .NET, Go, and gRPC, further enhancing the system's performance and capabilities.
Improved scalability and increased request processing significantly.

Technologies: Go, Amazon Web Services (AWS), C#, AWS Lambda, API Gateways, Amazon Aurora, Amazon Kinesis, Serverless Architecture, .NET, gRPC, Microservices, API Integration, APIs, Technical Leadership, Software Architecture, Back-end, SQL, Amazon, Redis, Solution Architecture, Back-end Development, MySQL, Amazon Elastic Container Service (ECS), Git, Distributed Systems, Event-driven Architecture, REST APIs, GitHub

Senior Software Engineer

2016 - 2019

Endava

Built components to create tax strategies and ensure compliance for US companies.
Implemented significant changes to multiple components, enhancing code quality and maintainability.
Demonstrated proficiency in a wide range of technologies, including .NET, SQL Server, and React.

Technologies: C#, High Code Quality, .NET, React, Full-stack, TypeScript, Back-end, SQL, Web Development, CSS, HTML, Back-end Development, Full-stack Development, APIs, REST APIs, GitHub

Experience

Chertero

https://fluidchains.com/products/chertero.html

I implemented a system for issuing certificates based on the Blockcerts' open standard for blockchain credentials. This system provided a secure and verifiable method of issuing digital credentials. The application also consists of both web-based and mobile components.

Streaming Video Service

A streaming service that I built using Rust to distribute real-time CCTV streams to the billiard software. This service enhanced the user experience by leveraging Rust capabilities to provide live footage in low-cost hardware. I also built and compared different solutions like Go and Rust.

Kozmoxyz

Kozmo is an all-in-one AI platform MVP designed for entrepreneurs. It provides a suite of intelligent assistant agents that streamline the process of creating and launching new projects, from idea elaboration to product-market fit research, adding marketing tools, and creating social media content.

The MVP used a mix of AI cloud (like OpenAI and Claude) and open source platforms (like Mistral and Llama) to give the ability to load balancing costs and availability.

Skills

Libraries/APIs

React, Web3.js, REST APIs, Node.js, FFmpeg

Tools

Amazon Elastic Container Service (ECS), Git, GitHub, Amazon EKS, GitLab CI/CD, Helm, RabbitMQ, Terraform

Languages

Go, C#, JavaScript, TypeScript, SQL, HTML, Rust, Python, Dart, CSS

Frameworks

Next.js, .NET, Tailwind CSS, Svelte, gRPC, Flutter

Paradigms

Microservices, Serverless Architecture, Mobile Development, DevOps, Event-driven Architecture

Platforms

Docker, Amazon Web Services (AWS), Blockchain, Kubernetes, Ethereum, DigitalOcean, Apache Kafka, AWS Lambda, Amazon, Google Cloud Platform (GCP)

Storage

MongoDB, PostgreSQL, MySQL, Amazon Aurora, Amazon DynamoDB, Amazon S3 (AWS S3), Redis

Other

API Integration, APIs, Architecture, Full-stack, Software Architecture, Back-end, Web Development, Back-end Development, Bitcoin, CI/CD Pipelines, Technical Leadership, Leadership, Cryptocurrency, Solution Architecture, Blockchain & Cryptocurrency, Distributed Systems, Web3, Full-stack Development, GitHub Actions, Solana, Videos, SvelteKit, API Gateways, Amazon Kinesis, High Code Quality, Decentralized Finance (DeFi), OpenAI, Open-source LLMs, Large Language Models (LLMs), LangChain, Temporal

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