AeroLeads people directory · profile
John Kline Email & Phone Number
Contractor
at
DataAnnotation
1 work email found
@stashinvest.com
4 phones found area 502, 646, and 888
LinkedIn matched
✓ Verified Jul 2026
4 data sources
Profile completeness 100%
Current company
Role
Contractor
Location
Dublin, Ohio, United States
Company size
Who is John Kline? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
John Kline is listed as Contractor at DataAnnotation, a with 9933 employees, based in Dublin, Ohio, United States. AeroLeads shows a work email signal at stashinvest.com, phone signal with area code 502, 646, 888, and a matched LinkedIn profile for John Kline.
John Kline previously worked as Freelance Engineer at Freelance and Backend Engineer L4 at Stash. John Kline holds Bachelor Of Engineering - Be, Computer Science And Electrical/Computer Engineering from Duke University Pratt School Of Engineering.
Company email context
Email format at DataAnnotation
This section adds company-level context without repeating John Kline's masked contact details.
{first}@stashinvest.com
86% confidence
AeroLeads found 1 current-domain work email signal for John Kline. Compare company email patterns before reaching out.
Profile bio
About John Kline
Java, JavaScript, Python, ReactJS, PostgreSQL, AWS, Scala, HTML/CSS
Listed skills include Java, Software Development, Javascript, Acting, and 41 others.
Current workplace
John Kline's current company
Company context helps verify the profile and gives searchers a useful next step.
Dataannotation
9 roles · 14 years
John Kline work experience
A career timeline built from the work history available for this profile.
Freelance Engineer
Current
Freelance
Backend - Python, Node, AWS, PostgreSQLFrontend - ReactJSAreas of Study - TDD, Design Patterns, Continuous DeliveryAreas of Focus - Code Quality, Deployment SpeedPart-Time Role: AI Model Training @ DataAnnotationPlease reach out if you'd like to connect!
Dec 2022 - Present
Backend Engineer L4
Backend - Scala, AWS, PostgreSQLAPM - DatadogOn-Call - PagerDutyCoaching/Mentoring JuniorsTechnical Interviewer
Oct 2019 - Dec 2022
Senior Software Engineer
Backend - Java, Scala, SQL Frontend - ReactJSImpact as Senior Software Engineer: Represented team at offsite planning retreat, mentored new engineers, steered team direction as technical leader, and onboarded a new software team based outside the US.
Jul 2019 - Oct 2019
Software Engineer
Backend - Java, Scala, SQL Frontend - ReactJSImpact as Software Engineer: Backend Java contributions to email marketing, lead generation, and enterprise products.
May 2017 - Jul 2019
Senior Associate
Backend - Java, Spring, JPA/Hibernate, REST, SQL, Maven, JenkinsFrontend - JSF, XHTMLImpact: At junior levels, solid Java contributions across multiple project domains. At senior level, reliable production deployments, subject matter expert for QA staff, active planning with product teams, and mentorship of juniors.
2016 - May 2017
Associate L2
2014 - 2016
~2 yrs
Associate L1
2013 - 2014
~1 yr
Junior Associate
Jul 2012 - 2013
1 education record
John Kline education
FAQ
Frequently asked questions about John Kline
Quick answers generated from the profile data available on this page.
What company does John Kline work for?
John Kline works for DataAnnotation.
What is John Kline's role at DataAnnotation?
John Kline is listed as Contractor at DataAnnotation.
What is John Kline's email address?
AeroLeads has found 1 work email signal at @stashinvest.com for John Kline at DataAnnotation.
What is John Kline's phone number?
AeroLeads has found 4 phone signal(s) with area code 502, 646, 888 for John Kline at DataAnnotation.
Where is John Kline based?
John Kline is based in Dublin, Ohio, United States while working with DataAnnotation.
What companies has John Kline worked for?
John Kline has worked for Dataannotation, Freelance, Stash, Web.Com, and Publicis Sapient.
How can I contact John Kline?
You can use AeroLeads to view verified contact signals for John Kline at DataAnnotation, including work email, phone, and LinkedIn data when available.
What schools did John Kline attend?
John Kline holds Bachelor Of Engineering - Be, Computer Science And Electrical/Computer Engineering from Duke University Pratt School Of Engineering.
What skills is John Kline known for?
John Kline is listed with skills including Java, Software Development, Javascript, Acting, Programming, Css, Website Development, and Databases.
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