[Hiring] Research Scientist @IPinfo

Role Description

Our measurement platform, ProbeNet, collects more than 50TB of ping, traceroute, BGP and DNS data every week from over 1,300 servers around the world. This role doesn't hand you a clean dataset to analyze. You decide what we measure, design the method, prove it's correct against ground truth, and ship it into products that over a billion API requests a day rely on.

The problems are open research questions, such as these:

• Geolocating the whole routed address space, including prefixes that don't answer probes, sit behind anycast, or publish geofeeds that are wrong.
• Claimed vs. measured location: Find the VPN exit nodes whose advertised location is physically impossible given measured latency.
• Topology from imperfect traceroutes: Map anycast deployments, router-level topology, and submarine cable paths from incomplete, asymmetric paths.
• IPv6 at scale: Build target lists and inference methods for an address space that can't be scanned exhaustively.

What you'll do:

• Drive work on research problems from the question to production.
• Design measurements, run them on ProbeNet and public platforms such as RIPE Atlas, validate them against ground truth, and carry the result into our BigQuery and Airflow pipelines.
• Measure every claim you make about our data in IP addresses against ground truth.
• Work on paper submissions to top venues with academic collaborators.
• Co-supervise our PhD summer research interns.
• Present your work externally at IMC, TMA, RIPE, and NANOG, and also internally within the company.

Qualifications

• A completed (or close to completion) PhD in computer science or a closely related field, with a dissertation in Internet measurement.
• At least two first-author papers at ACM IMC, SIGCOMM, CoNEXT, PAM, TMA, NSDI, USENIX Security, NDSS, IEEE S&P or ACM CCS.
• Hands-on experience designing and running your own Internet-scale measurements.
• Deep knowledge of how the Internet actually works: BGP, address allocation, IPv6, DNS, anycast, CDNs, and traceroute analysis.
• Statistical rigor: ability to design validation, quantify uncertainty, and differentiate real signals from measurement artifacts.
• Strong Python or Go, and fluent SQL on multi-terabyte datasets.
• Clear writing for reviewers and customers alike.

Requirements

• Prior work on IP geolocation, VPN or proxy detection, or anycast.
• Open datasets or tools that the community uses.
• Program committee service at IMC, PAM, TMA, or other conferences.

Benefits

• Research that ships: your methods end up in products used by millions.
• Access to ProbeNet and our full measurement archive.
• A 100% remote team with flexible working hours.
• A competitive salary.
• A flexible vacation policy.

How to apply

Send your CV, a link to your dissertation, and a cover letter of no more than one page that answers:

• Which of your papers best shows how you work, and what would you do differently today?
• Pick one of the open research questions above. How would you validate a solution when ground truth is scarce?
• Why do you think you would be a good fit for the role?

We won't review applications that don't include all three.

Application deadline

Please submit your application by November 30, 2026.