Jj
Jj is currently hiring for 26 data science, machine learning and AI roles, mostly for data scientists, research scientists and data engineers. Openings are based in Madrid, Barcelona and Hyderabad. The skills Jj asks for most often are Data Science, Python, AI and Data Analytics. Across 18 listings that published pay, the median advertised base salary is $136k a year. We've listed 112 roles at Jj since May 2026.
At a glance
- Roles
- Data Scientist (10)Research Scientist (6)Data Engineer (3)Machine Learning Engineer (3)Analytics Engineer (2)AI Engineer (1)Data Analyst (1)
- Seniority
- Senior (22) · Mid (2) · Staff (2)
- Locations
- Madrid (9)Barcelona (2)Hyderabad (1)San Diego (1)São Paulo (1)USA (19)Spain (3)Belgium (1)Brazil (1)India (1)
- Remote
- 0 of 26 open roles
- Advertised pay
- $136k median · $87k–$197k typical (18 listings, annual USD)
- On the board since
- May 2026 · 112 roles listed
26 roles at Jj
Past roles at Jj
Positions we’ve listed that are now closed — kept for reference.
Director - New Products & Business Development (NPBD) Analytics, Neuroscience & Cardiovascular
ClosedWorking at Jj: common questions
Is Jj hiring data scientists right now?
Yes — Jj has 26 open data science, machine learning or AI roles on the board, 18 of them posted in the last 30 days. The most recent was posted on October 30, 2026.
What kind of data roles does Jj hire for?
Current openings break down as Data Scientist (10), Research Scientist (6), Data Engineer (3) and Machine Learning Engineer (3).
What skills does Jj look for?
The most requested skills are Data Science, Python, AI, Data Analytics, SQL and Machine Learning. Data Science appears in 25 of 26 listings.
Does Jj offer remote data jobs?
None of Jj's current data roles are marked remote — they are based in Madrid, Barcelona and Hyderabad.
Where is Jj hiring?
Open roles are based in Madrid, Barcelona, Hyderabad, San Diego and São Paulo.
What seniority levels does Jj hire at?
By seniority, openings are senior (22), mid (2) and staff (2).
How much does Jj pay data scientists?
Across 18 listings that published a salary, the median advertised base pay is $136k a year, with most falling between $87k and $197k. Figures are converted to annual US dollars and reflect advertised ranges, not confirmed offers.