Simera Professional Key (SPK)

Ariel S

Dominican Republic

Senior Software Engineer

$ 6,700/month

8 yrs exp

I'm a software engineer with 7+ years of experience, most of it spent building in backend using Ruby on Rails, Elixir, and Go for a fintech company, where I worked on everything from a centralized integrations gateway serving several microservices, to REST APIs powering lending and payment workflows. I also have working experience with React and TypeScript on the frontend! Earlier this year I spent a few months in a PM role on a credit decision engine using Taktile, which was a good detour but c…

Skills

  • PostgreSQL
  • Ruby On Rails
  • Typescript
  • Golang
  • ReactJS
  • Elixir
  • AI Agents
  • AI-Assisted Productivity (Claude, Gemini, Copilot)
  • Agentic AI Systems
  • Phoenix
  • Gin

Ariel S

Dominican Republic

Senior Software Engineer

$ 6,700 /month

Part Time: $ 4,450/month

8 yrs exp

I'm a software engineer with 7+ years of experience, most of it spent building in backend using Ruby on Rails, Elixir, and Go for a fintech company, where I worked on everything from a centralized integrations gateway serving several microservices, to REST APIs powering lending and payment workflows. I also have working experience with React and TypeScript on the frontend! Earlier this year I spent a few months in a PM role on a credit decision engine using Taktile, which was a good detour but c…

Skills

  • PostgreSQL
  • Ruby On Rails
  • Typescript
  • Golang
  • ReactJS
  • Elixir
  • AI Agents
  • AI-Assisted Productivity (Claude, Gemini, Copilot)
  • Agentic AI Systems
  • Phoenix
  • Gin

Senior Software Engineer

Forward Financing
February 2024 - January 2026

- Designed and built a centralized integration gateway in Ruby on Rails and Go, consolidating several microservices' third-party integrations into a single layer that became the org-wide standard - Designed RESTful APIs for customer-facing lending and payment workflows, backed by PostgreSQL and Redis - Led technical design reviews, set code standards, and drove sprint planning across a cross-functional team - Resolved performance bottlenecks, cutting API latency on high-traffic financial workflows through query optimization, indexing, and caching - Worked directly with Product to translate business requirements into scalable technical solutions

Software Engineer

Forward Financing
January 2022 - February 2024

- Developed and maintained Rails and Elixir/Phoenix services across lending and payment workflows - Contributed to architectural decisions and roadmap planning - Grew test coverage from near-zero to broad coverage across the app - Designed and consumed RESTful APIs with complex business logic and compliance requirements

Associate Software Engineer

Forward Financing
July 2021 - January 2022

- Built and shipped Rails backend features in agile sprints - Built customer-facing React/TypeScript UI components, including form-based elements and type definitions for auth integrations - Handled bug triage, hotfixes, and post-mortems for production incidents - Built internal tooling in Ruby and JavaScript for the operations team

Automation Engineer

Forward Financing
September 2017 - July 2021

- Built and shipped features for an internal Rails form over four years, done informally alongside official automation duties - Built automated testing frameworks in Ruby, cutting manual QA cycles by ~40% - Scripted deployment and data pipeline automation in Ruby and Bash - Integrated automation tooling into the core dev workflow