Invoicing Software for Software Engineers
Estimates, invoices, and payments built for software engineers managing backend development, API integrations, database design, and system architecture.
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The billing problem for software engineers
As a software engineer, your expertise is in delivering great work for companies hiring for backend systems, APIs, and infrastructure work. But getting paid for that work? That's where things break down. Between creating estimates, tracking payments, and following up on overdue invoices, billing eats into time you should be spending on backend development, API integrations, database design, and system architecture. Most software engineers either use spreadsheets, generic accounting software, or nothing at all — and end up losing money to late payments, unclear scope, and administrative chaos.
Common billing issues
- Complex technical work is hard to estimate accurately, leading to scope and budget overruns
- Clients expect detailed breakdowns of hours spent on invisible infrastructure work
- Switching between hourly consulting and fixed-price projects for different clients is messy
- Enterprise clients have net-60 or net-90 payment terms that crush your cash flow
What software engineers try instead
Most software engineers start with spreadsheets or Word documents for estimates, then move to generic accounting tools like QuickBooks or Wave when things get complicated. Some use a patchwork of apps — one for estimates, another for invoices, a third for payment tracking. Others just send plain emails with amounts and hope for the best.
Why generic tools fall short
Generic tools aren't built for how software engineers actually work. Spreadsheets look unprofessional and can't collect payments. Accounting software is designed for bookkeepers, not for client-facing billing. Stitching together multiple tools means nothing is connected — your estimates don't become invoices, your invoices don't track payments, and you spend hours every week on admin that should be automatic. The result: you look less professional than your work deserves, and your cash flow suffers.
How Loopjet works for software engineers
Loopjet supports both hourly and fixed-price billing models, generates detailed activity reports, and automates payment reminders — even for clients with long payment terms. With Loopjet, your entire billing workflow lives in one place: create professional estimates, convert them to invoices with one click, collect payments via cards or bank transfers, and give each client a branded portal where they can view everything. Activity reports keep your work visible, automatic reminders keep payments on track, and multi-currency support means you can bill companies hiring for backend systems, APIs, and infrastructure work anywhere in the world.
Create your first estimate
Build a professional estimate in minutes. Add line items, set payment terms, and send it to your client with one click.
Convert to invoice on approval
When your client approves, turn the estimate into an invoice instantly. Payment links are included automatically.
Get paid, automatically
Clients pay via card or bank transfer. Loopjet tracks everything and sends reminders — you focus on your work.
14-day free trial · $9/month · Cancel anytime
Frequently asked questions
Is Loopjet designed specifically for software engineers?
Loopjet is built for freelancers and small businesses who bill clients for services — which makes it a perfect fit for software engineers managing backend development, API integrations, database design, and system architecture. Every feature, from estimates to payments to client portals, is designed for the way you work.
How much does Loopjet cost for software engineers?
Loopjet starts at $9/month with everything included — estimates, invoices, payments, client portals, and multi-currency support. There are no per-invoice fees, no transaction charges on your end, and no feature gates. You can start with a 14-day free trial to see if it fits your workflow.
Can I switch to Loopjet from spreadsheets or another tool?
Yes. Most software engineers are set up and sending their first estimate within 3 minutes. You don't need to import anything — just start creating documents and Loopjet handles the rest. Your clients see a professional, branded experience from day one.
Does Loopjet support recurring invoices for retainer clients?
Absolutely. Set up a recurring invoice once and Loopjet sends it automatically on your schedule — monthly, quarterly, or whatever works for your companies hiring for backend systems, APIs, and infrastructure work. Payment reminders are included, so you don't have to chase anyone.
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Ready to simplify your billing?
From estimate to invoice to payment — Loopjet handles your entire billing workflow so you can focus on what you do best.
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