Fraud Prevention Engineer | Mid-Senior | NordVPN
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 1d ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 32d ago
The date the source published, not the day we noticed it (2026-08-13). Last seen at its source 1h ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
Poland
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay PLN 340k–368k/yr
Middle 50% of 13 listings that do state pay — Engineering · Senior · Poland · PLN/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
-
ashby employer's own board first seen 11d ago · last seen 1h ago
The listing
The world’s most advanced VPN, and a whole lot more.
If you’re a curious problem-solver who carves their own path, join the team behind Threat Protection Pro, the NordLynx protocol, and the fastest VPN on the planet—tools that put privacy, security, and control back in people’s hands.
Your impact? Helping millions take back control of their online security, privacy, and data.
About the Role
We're hiring a Fraud Prevention Engineer to own the technical side of fraud prevention in our Payments team. You'll sit between fraud analysts and engineering — investigating how attacks happen, building defenses, and translating between both worlds. Think: root cause analysis, Cloudflare/Turnstile optimization, technical roadmap ownership, and enabling analysts with deeper technical capabilities. This is the first hire in what will become a dedicated fraud prevention engineering function.
Main Responsibilities
Investigate fraud attacks end-to-end — identify vectors, perform root cause analysis at the infra and application level, implement countermeasures
Configure and optimize Cloudflare (WAF, bot management, rate limiting, Workers) and Turnstile challenge flows
Act as the technical bridge between fraud analysts, engineering, and product teams
Analyze multiple attack vectors, plan and prioritize technical fraud prevention tasks on the roadmap
Build tooling, scripts, and queries that elevate the fraud analyst team's technical capabilities
Maintain deep understanding of payment flows (authorization, 3DS, tokenization) and where vulnerabilities sit
Core Requirements
3+ years in fraud prevention, security engineering, or a technical role in payments
JavaScript/TypeScript — comfortable with Cloudflare Workers, Turnstile, and browser-side challenge flows
Backend understanding — can navigate server-side codebases, trace API flows, and read system logs
Strong SQL — joins, window functions, large transaction datasets
Hands-on Cloudflare experience (WAF, bot management, rate limiting) or similar edge/CDN security platforms
Ability to communicate technical findings to non-technical stakeholders and vice versa
Bonus points
Python scripting for automation and data analysis
Experience with log/observability tools (ELK, Grafana, Datadog)
Background in application security or threat modeling
Familiarity with fraud platforms (Forter, Riskified, Sift) or in-house rule engines
Git workflow, CI/CD basics
What We Offer
Sharpen your edge: training, mentorship, and room to grow — always.
Take the time you need: extra vacation days, sick days, and time off when life calls.
Get premium healthcare: private health insurance in Lithuania and Poland — fully covered.
Protect your peace: enjoy free subscriptions to Calm, Headspace, and Mindletic, and our own resilience and mindfulness trainings.
Own your fitness: in-house gyms, sport cards, online workouts, and personal guidance — on us.
Pack your bags for workation: experience our company-wide trip abroad to the fullest.
Work from anywhere: work from wherever keeps you in the zone.
Celebrate your milestones: birthdays, weddings, and new family members — all deserve a gift.
Parent with ease: children’s summer camps and flexibility around the schedule — because parenting never pauses.
Join the party: team building and company events people talk about for months.
Unlock Cyber City: coffee bar, open gyms, kids’ room, music room, massage chairs — our Vilnius HQ is yours to enjoy.
Kindly refer to our Privacy Notice for Recruitment Candidates for comprehensive information regarding our data handling procedures throughout recruitment processes.
We expect all candidates to provide accurate and complete information during the recruitment process. While limited use of AI tools to refine application materials is acceptable, candidates remain fully responsible for ensuring that their submissions reflect their own qualifications, skills, and experience. Any failure to do so may negatively affect participation in the recruitment process. If broader AI assistance is allowed for a particular role or stage, we’ll let you know in advance.
By submitting your application, you acknowledge that it may be processed using automated tools for evaluation purposes. As part of our recruitment process, we may use an AI-based application review tool to help assess applications based on skills and experience relevant to the role. This technology is used to support - not replace - human decision-making, and every application is ultimately reviewed by a recruiter.
If you would like more information about how AI is used in this process or wish to exercise your rights under applicable data privacy laws, please contact us at privacy@nordaccount.com. Should you prefer to opt out of the automated evaluation, please submit your application directly to career@nordsec.com.