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Welcome to Chargeflow Welcome to Chargeflow, where innovation meets expertise. We're not just another startup; we're a dynamic and rapidly expanding company driven by seasoned leaders in the world of fintech and eCommerce. Our passionate team is on a mission to tackle one of the most pressing issues plaguing online businesses today: chargeback fraud. This insidious menace all too often results in substantial losses, both in revenue and profits. Join us on our journey as we revolutionize the fight against chargeback fraud. Who We're Looking For - The Dream Maker Chargeflow is seeking a Controller to take full ownership of the of our financial and operational control processes, ensuring accuracy, visibility, and efficiency across all revenue and expense streams. This is a hands-on, cross-functional role at the heart of our financial operations -connecting Finance, Billing, Sales, and Operations to ensure data integrity and seamless execution. You’ll manage accounting, billing, and reporting processes, build automated workflows, and translate financial data into insights that guide business decisions. If you thrive in a fast-paced environment, love improving processes, and have a sharp eye for detail - this role is for you. Your Arena
* Collaborate closely with the Billing team to ensure timely and accurate preparation, review, and submission of all client invoices.
* Support revenue operations by ensuring revenue is recognized correctly in accordance with both contractual obligations and accounting standards.
* Conduct in-depth analysis of billing and financial data to identify anomalies, inefficiencies, and recurring issues (e.g., denials, underpayments, refund trends).
* Build and manage automated, intelligent dashboards and reconciliation reports (in Excel/Sheets/BI).
* Translate data into actionable insights to improve billing workflows and support broader business strategy.
* Own the reconciliation process and communicate findings and recommendations to leadership.
* Act as a key liaison between Billing, Finance, Sales, Customer Success, and Product teams.
* Deliver high-quality service to internal and external stakeholders, with a strong focus on accuracy, clarity, and responsiveness.
* Oversee VAT and Sales Tax calculations and reporting, while supporting audit and tax compliance processes.

we are looking to solve difficult problems, smartly and simply, by thinking out of the box, leveraging the knowledge and know-how of the team members, and working as a team to create Magic. Our Company culture is characterized by accountability for our ethics, and for being fair to every employee, customer, supplier, and partner. We believe we must work hard and have fun on the way to success. We are looking for a Photonics Design Engineer (Active Devices) with proven, hands-on experience designing, simulating, and measuring active silicon-photonics components (e.g., modulators, phase shifters, photodiodes)


Responsibilities:
Design and model active Silicon Photonics devices; own specs, compact models, and layout intent. Drive design for manufacturability: analyze performance across process/voltage/temperature corners and wafer variability; run Monte-Carlo/tolerance studies. Build scripted, parametric simulation flows (sweeps/optimization) and extract figures of merit (EO S21, VL, responsivity, dark current, bandwidth, IL). Plan and execute lab/wafer-level measurements; close the model-to-silicon loop by comparing data to simulations and updating models. Collaborate with process, TEST, and packaging teams on masks, runsets, and DFT/DFM reviews.