---
title: 'Senior Software Engineer (ID Verification Team) at Seon'
canonical: 'https://feeny.ai/job/senior-software-engineer-id-verification-team-seon-budapest-rmskcvhf7tvx'
type: 'job'
last_seen: '2026-09-06'
---

# Senior Software Engineer (ID Verification Team) at Seon

- **Company:** Seon
- **Location:** Budapest, Hungary
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-08-27
- **Last confirmed live:** 2026-09-06
- **Apply:** https://jobs.ashbyhq.com/seon/6b145b7d-1d7d-4550-bf4a-959085b62cf5

## Job description

SEON is the command center for fraud prevention and AML compliance, helping thousands of companies worldwide stop fraud, reduce risk and protect revenue. Powered by 900+ real-time, first-party data signals, SEON enriches customer profiles, flags suspicious behavior and streamlines compliance workflows - all from one place. SEON provides richer data, more flexible and transparent analysis, and faster time to value than any other provider on the market. We’ve helped companies reduce fraud by 95% and achieve 32x ROI, and we’re growing fast, thanks to our partnerships with some of the world’s most ambitious digital brands like Revolut, Wise, and Bilt.

A Senior Software Engineer in our organization brings strong software engineering expertise first but also comes with a strong mentoring mindset to support engineering teams and work closely with our engineering leadership. SEON relies on a product-led growth approach.

Join our ID Verification Team, responsible for a vital and growing product within SEON. We own the development of our ID verification services, encompassing multiple backend components, SDKs, and the relevant parts of our customer-facing platforms. As we evolve our currently beta product into a core part of SEON's fraud analysis suite, we are focused on continuous feature delivery and exploring innovative improvements to enhance our customers' fraud prevention workflows. Our work spans frontend development (React-based SDK and admin dashboard), backend and Lambda functions (Node.js), database design (Postgres + pgvector), and architecting solutions for intricate technical problems.

This role offers flexibility and is based in our Budapest office with a hybrid work schedule.

## WHAT YOU’LL DO:

- Contribute to our ID Verification team, which is growing to be an essential part of our fraud prevention solution
- Deliver high-quality NodeJS, TypeScript and React code with simplicity, performance, and scalability in mind
- Work together with the team to design and implement cutting edge client and database-related application features
- Maintain & develop in NodeJS, TypeScript, React, NestJS, REST, RDBMS & backend of our applications
- Supporting, refining and suggesting improvements to the current codebase
- Providing expertise, reviewing pull requests of other team members suggesting improvements and best practices for the team
- Help during the whole Software Development Life Cycle including the design of new features and services
- Bring an engineering mindset, you care about how things work, how they scale, and how they can be improved over time.

## WHAT YOU’ll BRING:

- At least 5+ years experience in fullstack software engineering (NodeJS, TypeScript, React, REST, RDBMS, NOSQL)
- Agile & iterative mindset (end-to-end responsibility; you build it, you run it)
- End to end ownership from product requirements, planning, implementation and rollout.
- Strong experience in automated tests
- Strong experience in performance optimization
- Knowledge & understanding of IT security
- Experience in designing modular systems and refactoring / decoupling monoliths, working with microservices
- Familiarity with event-driven architecture
- Experience in containerization (Docker) and Kubernetes
- Experience in continuous integration and delivery
- Experience working in self organizing cross-functional teams
- Excellent problem-solving skills
- Experience in mentoring senior and mid-weight colleagues
- English Language Proficiency
- Experience in pair programming, TDD and Trunk Based Development (pro)
- Experience in AWS (pro)

## AMAZING IF YOU ALSO HAVE:

- Hands on experience with SDK development
- Hands on experience with ID Verification

SEON Technologies collects and processes personal data in accordance with applicable data protection laws. If you are a European Job Applicant see the privacy notice https://apply.workable.com/seon-technologies-1/gdpr_policy?lng=en for further details.

SEON is an equal opportunity employer. We strive to embrace what makes each one of us unique; we each have our own story. Whether looking at our current staff or future team members, we believe that everyone has something to contribute, and our employment practices reflect that. We do not make an employment decision based upon race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Please let your recruiter know if you need reasonable adjustments to our recruitment process.

## About Seon

## Company Overview
- **One-liner**: SEON provides an AI-powered fraud prevention and AML compliance platform that uses over 900 real-time data signals to help businesses detect hidden threats, automate compliance, and deliver seamless customer experiences.
- **Entity Type**: Private (Series C; $187mn total funding)
- **Headquarters**: Budapest, Hungary (with offices in Austin, London, Jakarta, and Singapore)
- **Founded**: 2017
- **Founders**: Tamás Kádár and Bence Jendruszák

## Core Business
- **Primary industries**: Fraud prevention, AML compliance, identity verification, risk management
- **Target customers**: B2B – fintech, payments, eCommerce, iGaming, and other online businesses
- **Mission**: “Redefine global fraud prevention by safeguarding the entire customer journey, allowing businesses to operate confidently and stay ahead of evolving risks.” [seon.io/about-us](https://seon.io/about-us/)

## Products & Services
- **AI Fraud Prevention Platform**: Real-time risk scoring using 900+ first-party signals, device intelligence, behavioral analysis, and customizable rules/ML models. Covers pre-onboarding, onboarding, payments, and post-login activity. (SaaS)
- **AML Compliance Suite**: Automated AML screening, suspicious activity report (SAR/STR) generation, regulatory reporting, case management, and network analysis to detect money laundering rings. (SaaS)
- **Identity Verification**: Document, selfie, and address verification enriched with fraud signals to accelerate onboarding of legitimate users. (SaaS)
- **AI Tools & Automation**: AI rules builder, model tuning, score explainability, context-rich summaries, and AML screening agent that cross-validates hits. [seon.io](https://seon.io/)

## Market Standing
- **Valuation/Market Cap**: Not publicly available
- **Key Metric**: Total funding of $187mn (Series C led by Sixth Street); has prevented over $300bn in fraud and money laundering; serves 5,000+ businesses globally.
- **Notable Investors/Partners**: Sixth Street (lead investor, Series C); global partner program launched in 2025.
- **Growth Signals**: Grew from 200 to 300+ employees between 2024 and 2026; opened offices in London (2025) and Singapore (2026); launched identity verification and opened data layer to external AI tools (2026); daily transactions secured exceed 15 million. [seon.io/about-us](https://seon.io/about-us/) [linkedin.com](https://www.linkedin.com/company/seon-tech)

## Competitive Advantages
- **Data breadth**: 900+ first-party real-time signals (device, IP, email, behavioral) that other tools miss.
- **Speed of implementation**: Average 14 days from deployment to impact, with hands-on support.
- **Transparent AI**: Every decision is explainable and auditable – users see which signals drove the risk score.
- **End-to-end coverage**: Single platform covers fraud prevention, AML, identity verification, and regulatory reporting across the customer lifecycle.
- **Flexible analysis**: Supports both rules-based and AI-driven approaches with full customisation. [seon.io](https://seon.io/)

## Strategic Focus
- **AI-driven efficiency**: Cutting manual review time by up to 50% through automated case summaries, model tuning, and AI-generated regulatory reports.
- **Global expansion**: New offices in APAC (Singapore) and EMEA (London) to serve a growing international customer base.
- **Platform extensibility**: Opening data layer to third-party AI tools and building a partner ecosystem.
- **Identity verification launch**: Expanding from fraud detection into identity assurance to cover the full onboarding journey. [seon.io/about-us](https://seon.io/about-us/)

## Why Work Here
- **Culture**: “No hierarchy,” open communication, transparency, customer obsession, innovation, and ownership. [seon.io/careers](https://seon.io/careers/)
- **Work policy**: Hybrid – encouraged to work from home a few days per week, with office collaboration the rest.
- **Perks**: Flexible hours, private health insurance, enhanced parental leave, employee assistance & mental health support, ESOP (employee stock ownership plan), weekly language courses (40+ languages), learning & development budget.
- **Team**: 300+ employees across the Americas, EMEA, and APAC; 120+ R&D engineers; strong emphasis on impact and autonomy.
- **Growth**: Rapidly scaling company with clear career progression and exposure to cutting-edge AI/ML fraud-fighting technology. [seon.io/careers](https://seon.io/careers/) [apply.workable.com](https://apply.workable.com/seon-technologies-1/)

## Sources
1. [seon.io – Product overview](https://seon.io/)
2. [seon.io/careers – Careers & perks](https://seon.io/careers/)
3. [seon.io/about-us – Mission, milestones, team](https://seon.io/about-us/)
4. [linkedin.com – Company page](https://www.linkedin.com/company/seon-tech)
5. [apply.workable.com – Open positions (archived)](https://apply.workable.com/seon-technologies-1/)

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