Junior Full-Stack Engineer — Accounting, SaaS Billing & Agentic AI

Location: LATAM - Remote

Salary: Up to USD 2,500/month

Experience: 1–2 years — junior candidates only

FitNext Consulting is partnering with an AI-native company to hire a Junior Full-Stack Engineer with practical development skills and a strong understanding of accounting, financial workflows, and SaaS billing.

This role is adecuado for an early-career developer with an accounting background or hands-on experience building financial software.

What you’ll do

- Build frontend and backend features supporting accounting, financial operations, and SaaS billing.
- Integrate billing platforms such as Orb, Metronome, Stripe, or similar tools.
- Support subscription and usage-based billing, including usage tracking, pricing, invoicing, and reconciliation.
- Connect applications, billing platforms, and financial systems through APIs and webhooks.
- Build or integrate AI agents to automate financial workflows.
- Test calculations, handle exceptions, and keep financial data accurate and traceable.

Must-haves

- 1–2 years of software engineering experience.



This position is exclusively for junior candidates.
- Practical full-stack development skills , including frontend, backend, APIs, and databases.
- Strong understanding of accounting and financial workflows , particularly invoicing, payments, and reconciliation.
- Familiarity with SaaS billing , including subscriptions, usage-based pricing, and billing infrastructure.
- AI-native working habits: regular use of AI tools and agents to develop software and improve workflows.
- Ability to validate AI-generated code and outputs and translate financial requirements into reliable software.
- An accounting background or relevant experience building financial tools.
- Strong attention to detail and accuracy when working with financial data.

Nice to have

- Hands-on experience with Orb, Metronome, Stripe Billing, or comparable platforms.
- Experience with usage metering, billing adjustments, credits, or failed-payment workflows.
- Experience with AI agents, LLM APIs, or financial workflow automation.

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📌 Junior Full Stack Engineer (Colombia)
🏢 FitNext Consulting
📍 Colombia