The 10 Best Developer and Software Engineering Conferences in 2027
By Kory White · Updated Oct 2026 · 4 min read
Direct answer
AWS re:Invent is the biggest developer conference on this list at 60,000+ attendees, but its 2027 dates are not announced yet. WeAreDevelopers World Congress (July 14-16, 2027, Berlin) is #2 and KubeCon + CloudNativeCon Europe (March 15-18, 2027, Barcelona) is #3. Dates and prices come from each organizer.
Rust programmers and teams adopting Rust who want the community in one room
Pick by what you want
Biggest audience
AWS re:Invent
Best for cloud-native teams
KubeCon + CloudNativeCon Europe
Best for Python developers
PyCon US
Best for senior engineers
QCon London
Free to join online
GitHub Universe
The ranking
1
AWS re:Invent
Answrs VerdictThe largest published audience on this list.
When: 2027 dates not announced yet; 2026 edition: Nov 30-Dec 4Where: Las Vegas, Nevada; the 2026 edition spans Caesars Forum, Caesars Palace, Encore, MGM Grand, The Venetian and WynnAttendance: 60,000+ attendeesSessions: 2,200+ sessions across five days, from workshops and hands-on labs to chalk talks and keynotesPrice: $2,499 full price for 2026; 10% off when you buy 10 or more passes
AWS re:Invent publishes 60,000+ attendees and 2,200+ sessions across five days in Las Vegas, spread over venues from Caesars Forum to The Venetian. The 2027 dates are not announced yet; 2026 runs Nov 30-Dec 4 with a $2,499 full price.
Go ifEngineers who build on AWS and want the most sessions and labs under one roof
Skip ifYou need confirmed 2027 dates today or a vendor-neutral program
Why #1 over #2: Its 60,000+ attendees top WeAreDevelopers’ 15,000+.
2
WeAreDevelopers World Congress
Answrs VerdictEurope’s biggest published developer crowd, with 2027 dates confirmed.
When: July 14-16, 2027Where: Berlin, Germany; Messe Berlin, South Entrance and CityCubeAttendance: 15,000+ builders, with 500+ speakers and 20+ stagesExpo: 40k+ sqm tech expoPrice: Congress Pass at 369 euros against a regular price of 799 euros; prices rise as the event nears
WeAreDevelopers World Congress runs July 14-16, 2027 at Messe Berlin, with 15,000+ builders, 500+ speakers, 20+ stages and a 40k+ sqm tech expo. The Congress Pass is 369 euros against a regular 799.
Go ifDevelopers who want a Europe-wide crowd, many stages and a big expo in one trip
Skip ifYou want a single-technology deep dive
Why #2 over #3: Its 15,000+ builders top KubeCon Europe’s 13,000+.
3
KubeCon + CloudNativeCon Europe
Answrs VerdictThe cloud-native room, with 2027 dates and prices already posted.
When: March 15-18, 2027Where: Barcelona, Spain; Fira Gran ViaAttendance: 13,000+ attendees, 3,600+ organizations and 350+ sessions over four daysPrice: Corporate early bird 1,075 euros and individual early bird 535 euros, both until Nov 18, 2026; VAT not includedFocus: CNCF graduated, incubating and sandbox projects, cloud native computing and AI infrastructure
KubeCon + CloudNativeCon Europe is March 15-18, 2027 at Fira Gran Via in Barcelona, with 13,000+ attendees and 350+ sessions across four days. Corporate early bird is 1,075 euros and individual early bird 535 euros until Nov 18, 2026.
Go ifPlatform, DevOps and SRE teams adopting Kubernetes and the CNCF stack
Skip ifYour stack is not cloud native
Why #3 over #4: Its 13,000+ attendees top PyCon US’s 2,225.
4
PyCon US
Answrs VerdictThe Python community’s flagship, with free sprints.
When: 2027 dates not announced yet; 2026 edition: May 13-19Where: Long Beach, California; the PyCon site lists both 2026 and 2027 in Long Beach, and 2026 runs at the Long Beach Convention CenterAttendance: 2,225 attendees from 58 countries at PyCon US 2025 in PittsburghSprints: Two days of development sprints, free to all attendeesPrice: Not published for 2027
PyCon US had 2,225 attendees from 58 countries in 2025, and its site puts 2026 and 2027 in Long Beach. The 2027 dates are not announced yet; 2026 runs May 13-19 and includes two days of free sprints.
Go ifPython developers who want talks, a job fair and free sprints on open-source projects
Skip ifYou do not write Python or need confirmed 2027 dates now
Why #4 over #5: Its published 2,225 attendees place it above Google Cloud Next, which publishes no count.
5
Google Cloud Next
Answrs VerdictNext is the Google Cloud conference, with the full 2027 price ladder posted.
When: April 13-15, 2027 (select programming on April 12)Where: Mandalay Bay Convention Center, Las VegasPrice: Full Conference: $1,099 early bird (Dec 1-Jan 28), $1,699 standard (Jan 29-Mar 11), $2,299 last chance (Mar 12-Apr 11)Registration: Opens in December; early bird passes go live in DecemberAttendance: Not published on the 2027 page
Google Cloud Next is April 13-15, 2027 at Mandalay Bay in Las Vegas, with select programming on April 12. Full Conference passes are $1,099 early bird, $1,699 standard and $2,299 last chance.
Go ifTeams building on Google Cloud, data and AI who want hands-on labs
Skip ifYou are not on Google Cloud
Why #5 over #6: It has dated 2027 pricing, while GitHub Universe has no 2027 dates yet.
6
GitHub Universe
Answrs VerdictFree virtual access makes it the easiest event here to join.
When: 2027 dates not announced yet; 2026 edition: October 28-29Where: San Francisco, California; doors open at Fort Mason Center on day oneFormat: In person and virtual; virtual registration is freeIn person: Sold out for 2026; Universe on the Road local events are free, application requiredPrice: Virtual: free
GitHub Universe ran October 28-29 in 2026 at Fort Mason Center in San Francisco, and its 2027 dates are not announced yet. Virtual registration is free; in-person tickets sold out.
Go ifDevelopers who want GitHub’s product launches, workshops and open-source maintainers
Skip ifYou need to plan a 2027 trip now
Why #6 over #7: Its free virtual access and 2026 San Francisco event give it the edge over QCon London.
7
QCon London
Answrs VerdictA practitioner-led program for senior engineers.
When: April 13-15, 2027, with certification on April 16Where: The QEII Centre, LondonProgram: 15 engineering tracks and 75+ practitioners from innovator and early adopter companiesPrice: Conference (3 days) 2,390 pounds while current pricing lasts, until November 10
QCon London is April 13-15, 2027 at the QEII Centre, with certification on April 16, 15 engineering tracks and 75+ practitioners. The conference ticket is 2,390 pounds until November 10.
Go ifSenior engineers and architects who want production stories, not product pitches
Skip ifYou want hands-on labs for one vendor
Why #7 over #8: It publishes a fixed 2027 program size and price, ahead of Devoxx Belgium’s pass prices still to come.
8
Devoxx Belgium
Answrs VerdictJava and AI talks on cinema screens in Antwerp.
When: October 4-8, 2027Where: Kinepolis Antwerp, Groenendaallaan 394, Antwerp, Belgium; talks run in cinema roomsProgram: Five days: Deep Dive days Monday and Tuesday, conference days Wednesday to Friday; 8 tracks including Agentic Engineering and Java Language and PlatformPrice: Passes to be announced; registration opens on August 16, 2027
Devoxx Belgium is October 4-8, 2027 at Kinepolis Antwerp, with five days and 8 tracks from Java to agentic engineering. Passes are to be announced and registration opens August 16, 2027.
Go ifJava, JVM and AI-tooling developers who like deep dives and a cinema venue
Skip ifYou need a published price before you plan
Why #8 over #9: It publishes a track list and venue, while GOTO Copenhagen lists no track count.
9
GOTO Copenhagen
Answrs VerdictThirty years of GOTO, with blind bird pricing open now.
When: October 4-8, 2027; masterclasses October 4-5, conference October 6-8Where: TAP1, Copenhagen, DenmarkPrice: Conference from 8,500 DKK blind bird (until Dec 18, 2026), 10,500 DKK early bird (until May 1, 2027), 12,995 DKK regularHistory: 30 years of GOTO conferences
GOTO Copenhagen is October 4-8, 2027 at TAP1, with masterclasses October 4-5 and the conference October 6-8. Blind bird is 8,500 DKK until Dec 18, 2026; regular is 12,995 DKK.
Go ifEngineers who want craft, architecture and a hallway track, with masterclasses first
Skip ifYou want a single-vendor roadmap
Why #9 over #10: Its dates, venue and price ladder are all posted, while RustConf has no price yet.
10
RustConf
Answrs VerdictThe annual Rust gathering, dated for Vancouver.
When: September 7-10, 2027 (save the date)Where: Vancouver, Canada, plus onlineHistory: Held each year since 2016; the 2026 edition was September 8-11 in MontrealPrice: Not published yet
RustConf is September 7-10, 2027 in Vancouver plus online, a save-the-date on its site. It has run each year since 2016; the 2026 edition was September 8-11 in Montreal.
Go ifRust programmers and teams adopting Rust who want the community in one room
Skip ifYou do not write Rust or need prices now
How we ranked these
We ranked each conference first by the attendee count its organizer publishes, largest first, then the rest by developer reach and scope. Dates, venues and prices are taken only from each organizer’s own site; where 2027 dates are not announced yet, the latest edition’s dates are shown instead. PyCon US is counted at its 2025 attendance. Facts are taken from each maker's own published information; check the official site before you buy.
Questions people ask
Which developer conference is the biggest?
AWS re:Invent publishes 60,000+ attendees, ahead of WeAreDevelopers World Congress at 15,000+ and KubeCon + CloudNativeCon Europe at 13,000+.
Which of these have confirmed 2027 dates?
KubeCon + CloudNativeCon Europe (March 15-18), Google Cloud Next (April 13-15), QCon London (April 13-15), WeAreDevelopers World Congress (July 14-16), RustConf (September 7-10), Devoxx Belgium and GOTO Copenhagen (both October 4-8).
Which events have not announced 2027 dates?
AWS re:Invent, PyCon US and GitHub Universe show 2027 dates as not announced yet; their latest dates were Nov 30-Dec 4, May 13-19 and October 28-29 for 2026.
Can I attend any of these for free?
GitHub Universe offers free virtual registration, and PyCon US sprints are free to all attendees.
Published attendance (attendees; "+" figures shown at the stated number; PyCon US is the 2025 edition) at a glance
PyCon US2,225 attendees
KubeCon + CloudNativeCon Europe13,000 attendees
WeAreDevelopers World Congress15,000 attendees
AWS re:Invent60,000 attendees
Published attendance (attendees; "+" figures shown at the stated number; PyCon US is the 2025 edition), as published by each maker. Picks without a published figure are left off.
