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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.

Introducing 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 Revenue Controller to take full ownership of the Order-to-Cash lifecycle. This is a hands-on, cross-functional role at the core of our revenue operations, connecting finance, ops, and GTM teams to ensure revenue flows are accurate, reliable, and scalable. You’ll lead operational processes around revenue tracking, commissions, and reporting, while building the automations and workflows that keep everything running smoothly behind the scenes. From turning complex data into clear insights to aligning teams on execution, you’ll be the go-to person for driving operational precision. You'll be serving SMBs, corporate clients, and strategic partners, while also designing and maintaining advanced reporting processes using Excel, Google Sheets, and BI tools. 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 deep analysis on billing and financial data to identify anomalies, inefficiencies, or recurring issues (e.g., denials, underpayments, refund trends).
* Build and manage automated, intelligent dashboards and reconciliation reports (in Excel/Sheets/BI).
* Own the sales commission process, including maintaining commission tracking files and ensuring accurate, timely calculations.
* Translate data into actionable insights to improve billing workflows and support broader business strategy.
* Maintain and improve billing policies, procedures, and documentation through an internal knowledge base.
* 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.
* Ensure billing data integrity across systems and reporting tools.
* Handle ad-hoc data and reporting requests from management and clients.
* 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.