Nathan Parraga Thiesen

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Senior Backend Engineer

HIglobe

Mar 2025 - Current (1 year 4 months)

• Designed the banking partner integration abstraction, enabling new partners to be onboarded against a common interface — reducing per-partner engineering effort across the team. • Delivered backend components for Higlobe's credit card product as part of a cross-functional team effort, owning my surface area from design through production. • Expanded the backend observability platform, extending monitoring, tracing, and alerting coverage across services on AWS to improve operability and incident response.

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Senior Software Engineer

Zefi.ai

Jun 2024 - Mar 2025 (10 months)

• Owned end-to-end delivery of AI agent and chat assistant features for the customer-facing product, working full stack across backend services, the RAG pipeline, and React frontend. • Established the organization's cloud infrastructure from scratch, designing and implementing the Terraform foundation on AWS that the team builds on. • Stood up the observability platform from zero, instrumenting services with OpenTelemetry to give the team production visibility into the AI pipeline.

Senior Full-Stack Engineer

Fractal

Apr 2023 - Jan 2024 (10 months)

• Contributed to the development of idOS, a decentralized identity protocol for web3, building on Kwildb — a decentralized SQL database — while Kwil itself was still in active development. • Worked on Fractal's KYC engine, the system powering identity verification across the platform's web3 integrations. • Resolved performance bottlenecks across the KYC backend — slow endpoints, inefficient database queries, background job throughput, and third-party integration latency — improving the responsiveness of the verification pipeline.

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Cloud Engineer

Mineiros

Oct 2021 - Apr 2022 (7 months)

• Built a Go CLI tool from scratch that automatically generated documentation for Terraform modules, streamlining maintenance of Mineiros' large module library. • Contributed to Mineiros' open-source Terraform modules — widely used across the IaC community — alongside internal modules spanning GCP, AWS, and GitHub providers.

Senior Software Engineer

Passbase

Jun 2021 - Oct 2021 (5 months)

• Built new Go services from scratch with a focus on reliability, observability, and performance. • Designed and shipped production infrastructure for the Data Intelligence domain as part of a team — authoring Terraform/Terragrunt modules deployed on AWS with Vault and Nomad. • Maintained the legacy Ruby on Rails API alongside the Go migration work.

Senior Software Engineer

cargo.one

Dec 2020 - May 2021 (6 months)

• Contributed across multiple product areas of cargo.one's Python + gRPC microservices on Kubernetes/GCP, including Airflow data pipelines.

Senior Software Engineer

Chattermill

Mar 2020 - Aug 2020 (6 months)

• Designed and led implementation of a clean-architecture refactor of legacy monolithic services, introducing the patterns and structure the team built on going forward. • Owned major pieces of the REST APIs powering Chattermill's analytics and dashboards features. • Contributed to team-wide architectural discussions and agile process improvements.

Senior Software Engineer

Marley Spoon

Jul 2018 - Mar 2020 (1 year 9 months)

• Owned major pieces of the internal tools and operations domain, shipping features across the systems that supported Marley Spoon's logistics and fulfillment workflows. • Contributed to the company's event-driven platform on Kafka with Avro schemas, building and maintaining services that exchanged events across the wider microservices architecture. • Developed and maintained REST and GraphQL APIs alongside React + Redux frontends, working full-stack across the product surface. • Mentored junior engineers on patterns, code review, and shipping practices.

Software Engineer

Zendesk

Feb 2017 - Jun 2018 (1 year 5 months)

• Co-inventor on a Zendesk patent for a web widget that facilitates telephone calls between customers and support agents (US Pat. 11,595,523), originating from work on Zendesk Talk's customer-facing voice channels. • Contributed across Zendesk Talk — a real-time telephony product spanning voice, call routing, agent-facing real-time UI, and integrations with the wider Zendesk ecosystem. • Worked on a system that needed to be robust, low-latency, and reliable at scale, contributing across the full development lifecycle.

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Full-Stack Developer

GoConqr

May 2016 - Nov 2016 (7 months)

Social e-learning platform built on Ruby on Rails and Backbone.js.

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Full-Stack Developer

Resultados Digitais (RD Station)

Feb 2014 - May 2016 (2 years 4 months)

• One of the lead full-stack engineers on RD Station, a marketing automation SaaS serving 2,500+ B2B clients at the time, making architecture and design decisions across the platform during a period of rapid growth. • Developer of the Lead Scoring project and architect of the lead segmentation and custom fields features — three of the platform's core data and targeting capabilities. • Shipped CRM integrations (Pipedrive, Salesforce, Agendor, others), social media posting and monitoring, and the in-app Google Analytics conversion reporting.

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Php/Java Engineer

VH Soluções em Informática

May 2013 - Feb 2014 (10 months)

Started as lead PHP engineer; later joined the Java team developing document management, public administration, and budget systems for the Legislative Assembly of Santa Catarina.

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Qa Assistant

Vista Software

Sep 2011 - Nov 2012 (1 year 3 months)

Implemented the company's Quality Management System, leading to its ISO 9001:2008 certification.

Nathan Parraga Thiesen

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