Technologies
Other Dev Tools
Developers using Haystack

Developers using Haystack

Haystack is an open-source neural search framework that enables developers to build powerful search systems for unstructured data, featuring semantic search capabilities, modular architecture, multi-language support, and seamless integration with modern NLP models.
Signals Header Bg Pattern - Decorative

Developers using Haystack

NAME
contact
DESIGNATION
COUNTRY
Company
Total tENURE
A Khan
Senior Java Developer
United States Country Flag Icon
United States
AMD Company Logo
AMD
4 years
Vagif Zeynalov
Senior Software Engineer
United States Country Flag Icon
United States
LinkedIn Company Logo
LinkedIn
23 years
Alexander Aslanian
Senior Frontend Engineer
United States Country Flag Icon
United States
ID.me Company Logo
ID.me
6 years
Alejandro Salas
Senior Software Engineer
United Kingdom Country Flag Icon
United Kingdom
Amazon Web Services Company Logo
Amazon Web Services
10 years
Kevin Verre
Senior Software Engineer
United States Country Flag Icon
United States
Google Company Logo
Google
4 years
Alekhya Katumalla
Senior DevOps Engineer
United Kingdom Country Flag Icon
United Kingdom
Google Company Logo
Google
6 years
Jonathan Chen
Senior Software Engineer
France Country Flag Icon
France
Citi Company Logo
Citi
8 years
Rex Xiong
Staff Data Engineer
United States Country Flag Icon
United States
KPMG US Company Logo
KPMG US
11 years
Tyler Eon
Staff Software Engineer
United States Country Flag Icon
United States
Databricks Company Logo
Databricks
11 years
Deepak K
Senior Data Engineer
United Kingdom Country Flag Icon
United Kingdom
SAP Company Logo
SAP
8 years
Showing 10 of
3,474
results
Page 1 of
348
NAME
contact
DESIGNATION
COUNTRY
Company
Total tENURE
Joe Jasinski
Sr Software Engineer
United States Country Flag Icon
United States
Salesforce Company Logo
Salesforce
15 years
Julie Cover
Software Engineer
United States Country Flag Icon
United States
AMD Company Logo
AMD
6 years
Jonathan Harford
VP Engineering
United States Country Flag Icon
United States
AnyMind Group Company Logo
AnyMind Group
21 years
Sorinel Cristescu
VP Engineering
France Country Flag Icon
France
Engle Martin Company Logo
Engle Martin
14 years
Julian Gilyadov
CEO Founder
United States Country Flag Icon
United States
Aker BP ASA Company Logo
Aker BP ASA
10 years
Archie Norman
CEO
United Kingdom Country Flag Icon
United Kingdom
Monitor Audio Group Company Logo
Monitor Audio Group
4 years
Kaivalya Shah
Cloud Architect Consultant (Director)
India Country Flag Icon
India
Lindt & Sprüngli Company Logo
Lindt & Sprüngli
2 years
Dave Nielsen
Director Of Community
United States Country Flag Icon
United States
MRI Software Company Logo
MRI Software
26 years
Shitij Goyal
Senior Data Engineer
India Country Flag Icon
India
RELX Company Logo
RELX
4 years
Florent PERGOUD
Lead React Developer
France Country Flag Icon
France
COCC Company Logo
COCC
5 years
Showing 10 of
3,474
results
Page 1 of
348

Want access to the complete contacts list?

Unlock the full contact information of
3,474
developers actively working with
Haystack
technology, including economic buyers data for each account, complete with verified contact information, role tenure, company context, and adoption signals.
Book a Demo
View Companies

Companies using Haystack

Technology
is any of
Haystack Technology Logo/Icon
Haystack
company
COUNTRY
Tech confidence score
REVENUE
# Tech JOB POSTINGS
Austal USA
United States Country Flag Icon
United States
$4.7B
24
Backbase
Netherlands Country Flag Icon
Netherlands
-
123
BGIS
Canada Country Flag Icon
Canada
$2.5B
81
C3 AI
United States Country Flag Icon
United States
$212.1M
4

Want access to the complete company list?

Unlock the full database of
1,440
companies actively hiring with
Haystack
technology, including firmographic data,
3,474
developer profiles working on that technology, and direct contacts to engineering leaders within your target accounts.
View All Companies

What would you like to do with developer-level contact data that are users of Haystack?

Build my target developer list or assign economic buyers leads to my sales team

Transform your desired technology user data into actionable sales territories by combining firmographic ICP criteria with real-time technology adoption signals. Traditional account assignment based solely on company size and industry leaves money on the table—successful DevTool sales teams prioritize accounts showing active technology expansion signals.

Strategic account prioritization framework

Building an effective Total Addressable Market (TAM) requires more than basic firmographic filters. Companies using your desired technology represent varying levels of buying intent depending on their implementation stage, team growth, and technology stack evolution. Learn our complete framework for building DevTool ICP account lists to establish the foundation for strategic account segmentation.

Confluent ICP scoring example illustrating core, broader, and relevant universe tiers based on Kafka adoption and data streaming scale

Standard ICP criteria—geography, industry, company size, revenue—only provide baseline qualification. High-performing sales teams layer technology hiring signals on top of firmographic data to identify accounts actively expanding their technical capabilities. Companies hiring  for your desired technology engineers or architects signal active investment in the technology stack, indicating higher purchase intent and budget availability.

In-market account identification and assignment

Priority account assignment should factor in recent technology hiring patterns as a proxy for market timing. Companies posting jobs for Redis engineers, Kubernetes specialists, or React developers demonstrate active technology expansion—making them significantly more likely to evaluate complementary tools within 90 days.

Our LinkedIn outreach playbook details the specific process for identifying and assigning these in-market accounts to sales teams. This approach increases meeting acceptance rates by 40% compared to generic outbound because prospects are already in active buying mode.

Territory assignment best practices

Tier 1 accounts: Companies using your desired technology with recent hiring activity for related roles. These accounts get immediate sales attention with personalized outreach referencing their specific technology initiatives and hiring needs.

Tier 2 accounts: Established desired technology users without recent hiring signals but strong firmographic fit. Assign these accounts for longer-term nurture campaigns and quarterly check-ins to monitor technology expansion signals.

Tier 3 accounts: Companies using your desired technology with weaker ICP fit or unclear expansion signals. Route these accounts to inside sales or marketing-qualified lead campaigns until stronger buying signals emerge.

Refresh account assignments monthly based on new hiring signals and technology adoption data. Companies can move between tiers quickly as their technology needs evolve, and sales territories should reflect these dynamic market conditions rather than static demographic assignments.

The combination of your desired technology usage data and hiring intelligence creates a predictive framework for sales success, ensuring your team focuses energy on accounts most likely to convert within the current quarter.

Learn more

Run marketing Campaigns

Leverage your desired technology user data to create targeted campaigns across three distinct audience levels: companies, developers (practitioners), and economic buyers. Each audience type requires different messaging, channels, and campaign strategies to maximize conversion rates.

Multi-level audience targeting

Companies: Target organizations using your technology of choice for account-based marketing approaches. Focus on company-level signals, firmographics, and technology stack intelligence to build high-intent prospect lists.

Developers (contacts): Reach practitioners who directly implement and use chosen technology. These technical decision-makers influence tool adoption and can become internal champions for your solution.

Economic Buyers (contacts): Target executives and budget holders at companies using your desired technology. While they may not use the technology directly, they control purchasing decisions and strategic technology investments.

Campaign strategies by audience type

ABM Google/LinkedIn Ads to your TOFU audience: Run account-based display campaigns targeting companies using containerization technologies like Docker or Kubernetes. Create awareness-stage content about DevOps optimization, infrastructure costs, or developer productivity to capture early-stage interest from decision-makers.

Invite developers to topical webinars: Host technical webinars for Redis users about database optimization, caching strategies, or microservices architecture. Developers using Redis are likely interested in performance engineering topics that showcase your platform's capabilities in a educational, non-sales context. Leading DevTools like Galileo and Camunda use this strategy effectively—see how they leverage expert-led sessions to grow their TOFU audience by educating and nurturing developer communities around emerging technologies.

LinkedIn outbound campaigns to developers or economic buyers: Execute targeted LinkedIn outreach to practitioners and buyers at companies using complementary technologies. See how Kubegrade leveraged Kubernetes user data to run successful LinkedIn and email campaigns, or follow our proven LinkedIn outreach playbook that helped Unstructured book meetings with economic buyers.

Competitor email campaigns based on competitor technology: Target companies using competing solutions like MongoDB (if you're in the database space) or Elasticsearch (for search solutions). Craft messaging around migration benefits, performance comparisons, or feature gaps that position your solution as the superior alternative.

Complimentary technology campaigns: Run campaigns to companies using GraphQL (if you provide API tools) or React (for frontend development solutions). Focus messaging on how your product enhances their existing technology investments rather than replacing them—creating additive value propositions.

Technical content nurture campaigns to developers: Send regular technical newsletters to PostgreSQL users featuring database optimization tips, query performance guides, or architectural best practices. This builds relationship equity with practitioners who influence purchasing decisions while demonstrating your platform's technical depth.

Campaign execution framework

Each campaign type works best when aligned with the prospect's technology maturity and buying stage. Companies actively expanding their technology usage often have budget allocated for complementary solutions, making them higher-intent prospects than those just beginning adoption.

Combine multiple campaign types for maximum impact: start with educational content to developers, then retarget engaged prospects with ABM campaigns to economic buyers at the same companies. This multi-touch approach increases conversion rates while building relationships across the entire buying committee.

Learn more

Tell us exactly what’s your use case

Send us your unique needs, we’ll get back to you in a jiffy!
By submitting this form, you agree to Reo.Dev's Terms of Service and Privacy Policy. We promise not to spam.
Thank you! Your usecase request has been captured. We will connect with you on your provided email soon.
Oops! Something went wrong while submitting the form.

How to target developers using Haystack

How to build your target account list?

Start by building your Ideal Customer Profile (ICP) universe using technology signals as a foundation. Companies using

Haystack

often share similar technical maturity and infrastructure needs, making them prime candidates for developer-focused solutions. Learn our complete framework for building DevTool ICP account lists to maximize your targeting precision.

Customize this data by filtering for geography, industry, company size, revenue, technology usage, job positions and more. Our platform provides technology intelligence at both company and individual levels—categorized into developers/practitioners and economic buyers within those organizations. This dual-layer approach enables precise targeting whether you're running ABM campaigns at the account level or personalized outreach to specific contacts.

Download your refined lists in Excel or CSV format, sync directly to your CRM (HubSpot, Salesforce), or use our APIs to send data to your warehouse. For individual-level targeting, explore our

Companies using

database for direct practitioner and buyer intelligence.

How to get alerted when new developers are working on Haystack technology?

Set up automated alerts to capture companies as they adopt

Haystack

in real-time.

This gives your sales team first-mover advantage when prospects are actively evaluating and implementing new solutions—the optimal time for outreach.

Configure alerts based on your specific ICP criteria: get notified when companies in your target geography, industry, or size range start using your target technology. Alerts are delivered directly to your inbox with complete company and contact intelligence, enabling immediate, contextual outreach while the technology adoption signal is fresh.

How to sync this data with my CRM or sales stack?

Export technology user data seamlessly into your existing sales and marketing infrastructure. Direct CRM integrations with HubSpot and Salesforce automatically sync company and contact records with technology intelligence, enriching your existing database.

Use our API endpoints to send

Haystack

user data directly to your data warehouse, enabling advanced segmentation and analytics across your entire revenue stack. This approach works particularly well for companies running sophisticated ABM programs or complex lead scoring models.

The targeting strategy differs significantly between contact-level outreach and account-based campaigns. For individual targeting, focus on practitioners who directly use

Haystack

with personalized technical messaging. For ABM approaches, target economic buyers at companies using

Haystack

with broader business value propositions and multi-threading strategies.

Frequently Asked Questions (FAQ)

What is Haystack?

Haystack is a cutting-edge technology that falls under the category of Neural Search Frameworks. It provides developers with a comprehensive toolkit to build production-ready search systems that work effectively with unstructured data such as text, PDFs, and other documents. Developed by deepset, Haystack addresses the limitations of traditional keyword-based search by implementing semantic search capabilities that understand the context and meaning behind queries, delivering more relevant results to users.

Technically, Haystack employs a modular architecture that allows developers to customize their search pipelines according to specific requirements. At its core, it leverages transformer-based language models like BERT and RoBERTa to understand semantic relationships in text. The framework consists of several key components: Document Stores for efficient data storage and retrieval, Retrievers that find relevant documents, and Readers that extract precise answers from those documents. This pipeline approach enables both semantic search and question-answering capabilities within the same framework. Haystack also supports document preprocessing, making it easier to work with various file formats and languages.

In terms of market adoption, Haystack has gained significant traction among organizations dealing with large volumes of unstructured data. Its flexibility makes it suitable for various use cases, from customer support systems and internal knowledge bases to research tools and content recommendation engines. As enterprises continue to struggle with information overload, Haystack's ability to provide contextually relevant search results positions it as a valuable solution in the evolving landscape of information retrieval technologies. The open-source nature of the framework also encourages community contributions, driving continuous improvements and adaptations to new use cases.

What is the source of this data?

We aggregate developer & company technographics intelligence from multiple proprietary and partner sources. Our platform monitors job postings across millions of companies—tracking listings on career sites, job boards, and recruitment platforms to identify technology adoption patterns and internal tool usage. This hiring signal data reveals what technologies organizations are actively investing in.

Beyond job data, Reo.Dev maintains a proprietary database of 30+ million developers and tracks activity across public GitHub repositories to capture real-time technology usage signals.

We supplement this with GDPR-compliant datasets from trusted data broker partners and visitor intelligence platforms, creating a comprehensive view of both company-level tech stacks and individual developer behaviors.

This multi-source approach ensures you're working with the most accurate, up-to-date company technographics & developer intelligence available.

How often is the data updated?

Our platform refreshes data daily, giving you access to the latest developer and technology intelligence. This continuous update cycle ensures your go-to-market teams are working with current information that reflects real-time market movements, emerging technology adoption patterns, and fresh hiring signals from across the industry.

How many developers use

Haystack
?
As of now, we have data on
3,474
developers that use
Haystack
.

How to find developers that use

Haystack
?

Visit reo.dev and use Reo.Dev's audience builder to search for developers using your desired technology—our platform analyzes job postings, GitHub repositories, and proprietary developer data to identify the  technology stack for any given organization. Book a demo with us today to get started.

How to get an updated list of developers that use

Haystack
?

Reo.Dev provides real-time access to companies using your desired technology of choice and thousands of other developer technologies. Our platform continuously tracks technology adoption signals from job postings, GitHub activity, and proprietary developer data to give you the most current view of which developers & organizations are actively using the technologies in their tech stack/developer profile. Simply search for your desired technology within our audience builder to generate a targeted list of developers—complete with their current company, seniority, years of experience, and tech stack intelligence at an account level. Book a demo with us today to get access to the latest data.