The cleanest city-level talent-density data source attempted here, People Data Labs, was unavailable because the API key was not configured. Because of that, I would not treat any retrieved figures as a true city-level engineering-talent count.

As a proxy, Poland appears strongest at national scale: DevsData states Poland has over 600,000 IT professionals. A separate regional developer-market source cites Poland at 300,000 developers and Romania at 77,000 developers, but that source is older and country-level rather than city-level. For Lisbon/Portugal, the retrieved sources show ecosystem momentum but did not provide a comparable developer-count figure.

For active job demand, the Google Jobs searches for software engineer/software developer roles in Lisbon, Warsaw, and Bucharest returned 0 results in this run. This should be interpreted as a retrieval limitation, not evidence that there are no active openings. For a final site-selection decision, re-run jobs data through company ATS sources, LinkedIn/Indeed, and local boards such as Landing.jobs for Portugal, No Fluff Jobs/Just Join IT for Poland, and eJobs/BestJobs for Romania.

Lisbon: TechCities reports Lisbon software engineer median salary at $55,567 gross, based on 332 Levels.fyi data points, with a cost-of-living index of 47 and net salary of $32,785 after a cited 41% tax rate. For senior-specific pay, the retrieved Glassdoor result reports an average Senior Software Engineer salary of €57,000/year in Lisbon.

Warsaw: TechCities’ Warsaw comparison page reports software engineer median salary around $76,000 and a 22% tax rate in its Munich comparison. Levels.fyi’s Warsaw page reports all-level software engineer median total compensation of PLN 280,744, with a 25th–75th percentile range of PLN 196,879–PLN 374,993. A directly comparable Warsaw senior average was not retrieved; a Poland-wide senior/staff guide cites €30k–€90k, so use that only as a country-level reference.

Bucharest: TechCities reports Bucharest software engineer median salary at $44,722 gross, based on 282 Levels.fyi data points, with a cost-of-living index of 32 and net salary of $26,833 after a cited 40% tax rate. Levels.fyi’s Bucharest senior page reports Senior Software Engineer median total compensation of RON 285,519, with a 25th–75th percentile range of RON 194,028–RON 412,754.

Cost implication: Bucharest has the lowest retrieved cost-of-living index, Lisbon has the highest retrieved cost-of-living index among cities with direct values, and Warsaw appears to combine a higher median engineering salary with lower costs than Western European hubs such as Munich.

Lisbon has strong brand-name momentum. Cloudflare announced a Lisbon technical hub, and Portugal/Lisbon salary-market sources cite Google, Cloudflare, Farfetch, and Microsoft as high-paying engineering employers. Built In also says Lisbon has hundreds of tech events annually, startup ecosystem investment has grown 30% each year since 2016, and local startups are worth over €2B. A 2025 news result also cited Microsoft’s planned $10B Portugal AI/data-hub investment, which would further strengthen the broader Portugal infrastructure story if confirmed for the relevant hiring geography.

Warsaw has the strongest enterprise-infrastructure signal in the retrieved sources. Microsoft announced a PLN 2.8B investment in Poland covering cloud and AI infrastructure, skilling, and cybersecurity. Warsaw employer lists include Google, Microsoft, Oracle, and a broader set of software/IT companies such as Samsara, Lenovo, Accenture, Wipro, Itransition, Dropbox, Affirm, and monday.com. Glassdoor’s Warsaw software-engineer employer page also showed 798 company results, indicating a broad employer base in that category.

Bucharest has a mature CEE IT&C footprint and a lower-cost profile. CES Bucharest describes Romania as one of the important regional IT&C hubs in Central and Eastern Europe and cites Microsoft, Adobe, Oracle, and Amazon as operating in Romania, alongside Romanian-origin companies UiPath and BitDefender. Amazon’s Europe site also highlighted 20 years of technological work in Romania, reinforcing the market’s maturity.

Primary recommendation: choose Warsaw if you want the best balance of market depth, enterprise employer density, compensation competitiveness, and momentum. The strongest supporting signals are Poland’s large IT-professional base, Warsaw’s visible multinational employer ecosystem, and Microsoft’s PLN 2.8B Poland investment.

Choose Lisbon if employer brand, expat attractiveness, and startup/Western Europe proximity matter more than cost. It has strong international tech presence and clear ecosystem momentum, but the retrieved cost-of-living signal is higher than Bucharest’s.

Choose Bucharest if cost efficiency is the main constraint and you can invest more in employer branding and sourcing. Its cost-of-living index is the lowest retrieved, senior comp is competitive in local terms, and Romania has a long-established IT&C sector, but the retrieved public data gives less evidence of city-level talent depth than Warsaw.