Full-Time

Senior Staff Software Engineer

Fonoa

Fonoa

201-500 employees

Global tax automation and e-invoicing platform

No salary listed

London, UK

In Person

Category
Software Engineering (1)

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Requirements
  • Strong experience designing and operating scalable backend systems
  • Proven ability to work on ambiguous, high-impact problems
  • Track record of influencing technical decisions beyond your team
  • Ability to balance speed, quality, and long-term maintainability
  • Experience mentoring engineers and improving team practices
  • Fostering a culture of curiosity and experimentation

Fonoa provides a global tax automation platform that handles tax calculations, tax ID validation, invoicing and e-invoicing, transaction reporting, and tax filing from one system. It validates tax IDs in 110+ countries and supports tax calculation across 190+ countries and US states, enabling end-to-end VAT, GST, and sales tax management for digital platforms, marketplaces, and SaaS companies. The platform is designed for high-volume usage, with quick onboarding and reliable support from tax professionals that focus on digital-first businesses. Its goal is to help multinational digital businesses stay compliant and streamline their tax processes across many regions.

Company Size

201-500

Company Stage

Series C

Total Funding

$195M

Headquarters

Dublin, Ireland

Founded

2019

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Simplify Jobs

Simplify's Take

What believers are saying

  • PwC Indirect Tax Edge acquisition deepens enterprise reporting and filing coverage.
  • AI agents can reduce manual tax work while preserving human oversight and auditability.
  • Multinational SaaS, marketplaces, and digital platforms need unified cross-border tax automation.

What critics are saying

  • SAP, Avalara, Vertex, and ERP modules compress pricing and win bundled deals.
  • Jurisdiction changes and e-invoicing mandates create constant implementation and maintenance burden.
  • A single compliance error triggers penalties, audits, and rapid customer churn.

What makes Fonoa unique

  • Single platform covers tax IDs, invoicing, reporting, filing, and tax determination.
  • API-first architecture supports one integration across 190+ jurisdictions and 100+ countries.
  • Sub-200ms tax engine and one data model emphasize speed and consistency.

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Benefits

Remote Work Options

Flexible Work Hours

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

0%

2 year growth

-2%
Total Croatia News
Jul 15th, 2024
Croatian Company Fonoa Among Top 100 European Startups - Again!

As Poslovni Dnevnik writes, the Croatian company Fonoa was the first in the entire world to develop a fully integrated system for taxation of global transactions.

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Feb 10th, 2023
10 Incredibly Promising Irish Startups To Watch In 2023!

Ireland, the nation of singers and storytellers, has an interesting tale to tell when it comes to innovation and startups. The Emerald Isle is one of Europe’s leading tech hubs, home to disruptive early-stage startups as well as the European home of choice for globally-impactful corporations. With an established tech market and an impressive talent pool, Dublin is one of the cities on the fast track to becoming a European startup capital. Ireland is a prominent EU member and also benefits from close connections to the UK and US markets. This is in addition to a convenient system of corporation tax, making it an attractive country to both launch and grow businesses

Tech.eu
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Humaans Hr Software Might Help You Get Your Next Job Or Your Next Raise

If I could use one word to describe the current tech landscape, it would be contradictory. Some companies are reducing their costs by shedding staff. In the meantime, others are scaling up, expanding their reach, and creating new roles.One thing remains constant, whether reducing roles or onboarding new employees, you need good HR practices. And while scrappy may be the modus operandi when you're small and agile, growing your business comes with new challenges. HR tech startup, Humaans is here to help.Giovanni Luperti and Karolis Narkevicius found that unlike design tools used in their product design backgrounds, HR software was "clunky and slow" even for seemingly straightforward processes like managing direct reports and booking time off.With some initial proof of concept, the founders participated in the Y Combinator accelerator program, and following graduation, Humaans (that's not a typo) was born. I spoke to Luperti to find out more.A new way to do HRThe UK company develops a software solution that helps HR teams onboard, manage and grow their employees through fast workflows, automation and quick access to data

Humaans
Jan 23rd, 2023
How Fonoa leverages Humaans to build scalable processes and data ownership

When Laura Novello, People Operations Manager, joined Fonoa in June 2022, she had a sense that the growing startup was on the cusp of taking off.

EU-Startups
Nov 29th, 2022
Funding In Irish Tech Startups Tops €1 Billion In 2022

The Emerald Isle is continuing to grow its tech startup scene as VC funding into Irish SMEs tops €1 billion for the first nine months of 2022. It comes as a very positive sign of healthy growth in Irish tech amidst wider economic uncertainty in Europe. Ireland, whilst a small island nation, has quickly consolidated itself as a European tech hub. With strong links to the US, UK and popular membership in the EU and Eurozone, the country benefits from plenty of tasty ingredients that make up a strong tech ecosystem. Dublin, the capital city, is a popular base for globally-minded startups, and home to an impressive pool of tech talent and networking support