We're looking for a Billing Engineer to build our next-generation, in-house metering and billing platform. The billing system should power complex, rapidly evolving pricing across subscriptions, usage, tiers, discounts, overages, and custom enterprise contracts. You'll be the primary contributor implementing event-driven pipelines, pricing/rating logic, and deep Stripe integrations

I. What you'll do

Design and implement Kafka-backed metering and event pipelines
Implement pricing and rating logics. Encode plans, tiers, proration, discounts, custom contracts, and more. Should support mid-cycle price and plan changes safely.
Own Stripe integrations. Implement Payments and invoicing, webhooks, retries, refunds, and reconciliation workflows.
Model billing domain by developing data models for product catalogs, entitlements, and charge items.
Implement various payment strategies.
Ensure the accuracy of the billing system and provide observability to the system.

II. What you'll bring

Must have:

3+ years of backend engineering experience building production services.
Bachelor's or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or equivalent
Proficiency in Python; strong software design and code quality.
Experience with event streaming (Kafka or similar) and distributed system concepts.
Hands-on experience integrating Stripe Payments & Invoicing (or equivalent payment platforms).
Strong SQL and data modeling skills; comfort with large-scale usage data and financial accuracy.
Experience with ClickHouse (or similar OLAP systems) for high-volume usage aggregation and analytics.
API design expertise with gRPC and REST: resource modeling, versioning, backward compatibility, authn/z, pagination, idempotency.
Cloud experience with AWS and familiarity with containers and CI/CD.
Clear written and verbal communication; ability to translate pricing/business rules into robust systems.

Nice to have:

Background in a fintech company or experience building in-house usage-based billing platforms.
Knowledge of dunning strategies, dispute/chargeback workflows, and revenue assurance.
Experience integrating with cloud marketplaces (e.g., AWS marketplace), including private offers, SaaS/usage metering and entitlements, fulfillment APIs, and downstream invoicing.
Experience with infrastructure-as-code and security best practices.

III. Why you'll love working here

1. Workplace

Join a young and dynamic team with awesome projects, applying the latest technology
Working with specialists from all over the world provides you with a fantastic opportunity to expand your skill set.
Culture of openness and honesty in which individuals are respected and encouraged to achieve their full potential

2. Benefits comprise

13th-month salary and attractive performance bonuses
Flexible hybrid working model (WFH 2 days per week)
Premium Healthcare and Accident insurance
Annual health check package
Lunch allowance, Free parking
Advanced technical, English, and soft skills training to assist your career development
Annual Company trip and Teambuilding
Engaging monthly events: Happy Gathering, Mini Game, Birthday Celebration, Party, etc.
A spacious and fully equipped pantry for your most comfortable meal time
A wide range of sports and social activities: Football, Badminton, Running, Yoga, Tech clubs, Charity, etc.
Chance to be honored quarterly and annually with recognition awards for individuals, teams, seniority, etc.
Company supporting funds to ease your personal loans for Home, Vehicle, Tuition, etc.

IV. Additional Information

Working location: QTSC 1 Building, Quang Trung Software City, Trung My Tay Ward, HCMC

Working time: Monday to Friday, from 8:30 AM to 6:00 PM (Lunch break from 12:00 PM to 13:30 PM)

Gentle notice to our candidate about Decree No.13/2023/N?-CP

According to Decree No.13/2023/N?-CP on protecting personal data, LARION would apply Personal Data Processing Agreement with all candidates to ensure compliance with the decree. By submitting this application to LARION, you agree to allow LARION to proceed your provided information in accordance with Personal Data Processing Agreement that you have read, fully understood and agreed to the entire content at link https://larion.com/privacy-policy/

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