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Command|Link is a global SaaS Platform providing network, voice services, and IT security solutions, helping corporations consolidate their core infrastructure into a single vendor and layering on a proprietary single pane of glass platform.
Command|Link has revolutionized the IT industry by tackling the problems our competitors create.
In recognition for our unprecedented innovation and dedication, Command|Link was recognized as the SD-WAN Product of the Year, ITSM Visionary Spotlight, UCaaS Product of the Year, NaaS Product of the Year, Supplier of the Year, and the AT&T; Strategic Growth Partner.
Command|Link has built the only IT platform for scale that solves ISP vendor sprawl and IT headaches.
We make it easy for our customers to get more done, maximize uptime and improve the bottom line.
We're seeking a Billing Systems Developer to build and scale the financial systems that power Command|Link's platform.
This role sits at the intersection of engineering, finance, and data, ensuring billing is accurate, resilient, and fully auditable across a integral customer base.
You'll own key components of billing, from invoicing and payments to reconciliation and reporting, where precision and reliability are critical.
Key Responsibilities
Design and develop scalable billing systems (invoicing, usage-based billing, credits, taxes, proration)
Build and maintain ledger-based financial systems with full auditability
Integrate with payment gateways (Stripe, ACH, etc.)
Ensure idempotent processing to prevent duplication and inconsistencies
Develop reconciliation workflows to detect and resolve discrepancies
Architect resilient systems with retry, rollback, and recovery mechanisms
Optimize and manage large financial datasets, including historical data
Build and maintain APIs for billing services




Debug complex production data issues and support safe data migrations
Partner with finance, product, and engineering teams to evolve billing logic
Takes on additional responsibilities and projects as needed to support the success of the team and organization.
What you'll need for success
Core Engineering
Strong experience with PHP and/or Go
Proficiency in MySQL (joins, indexing, performance tuning)
Comfortable in Linux/Unix environments (Bash, command line)
Experience with Git
Experience with billing, payments, or financial transactions
Understanding of double-entry / ledger-based systems
Knowledge of taxes, proration, credits, and adjustments
Familiarity with payment processors (Stripe, ACH)
Data & System Design
Strong grasp of data integrity, ACID principles, and concurrency
Experience with audit trails, traceability, and reconciliation
Background in event-driven or queue-based architectures
Experience designing APIs and evolving system logic over time
Operations & Security
Strong debugging skills, especially with production data issues
Experience with cron jobs / scheduled processing and data migrations
Awareness of secure financial data handling, PCI, and RBAC
Why you'll love life at Command|Link
Join us at CommandLink, where you'll have the opportunity to shape the future of business communication.
We value the innovative spirit and seek individuals ready to bring their unique vision and expertise to a team that values bold ideas and strategic thinking.
Are you ready to make an impact?
Apply now and be the architect of your career as well as our clients' success.
Room to grow at a high-growth company
An environment that celebrates ideas and innovation
Your work will have a tangible impact
Flexible time off
Fun events at cool locations
Employee referral bonuses to encourage the addition of great new people to the team
#J-*****-Ljbffr

Postúlate en Kit Empleo: kitempleo.com.ar/empleo/q1cws

📌 Billing Systems Developer (Php / Go) (San Justo)
🏢 CommandLink
📍 San Justo