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Data-driven HR tools, people-centered insights

EFFECTIVENESS is a trusted partner in organizational development. We help businesses grow by identifying exactly which competencies, behaviors, and attitudes support – and which limit – success. Our strength lies in turning data into action: we diagnose, interpret, and design solutions that translate directly into measurable business value.

What We Do

  • Min project size
    $1,000+
  • Hourly rate
    $100 - $149 / hr
  • Employees
    2 - 9
  • Locations
    Warszawa, Poland
  • Year founded
    Founded 2016
  • Languages

2 Languages that we service

  • Polish
  • English

2 Locations

  • Warszawa , Poland
  • Youngstown , OH

No have been added yet...

    Pricing Snapshot

    Min. project size $1,000+
    Avg. hourly rate $100 - $149 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    EFFECTIVENESS INC offers competitive pricing with strong value for cost, consistently meeting client budgets. Clients report high satisfaction with deliverables, timely execution, and practical support, emphasizing the company's commitment to enhancing organizational capabilities through tailored assessments and training.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    < $10,000 based on 7 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    EFFECTIVENESS INC Review Insights

    Overall Review Rating

    5.0
    • Quality 5.0
    • Schedule 5.0
    • Cost 4.9
    • Willing to Refer 4.9

    Top Mentions

    Review Highlights

    • High Client Satisfaction

      Clients consistently express high satisfaction with EFFECTIVENESS INC's services. They appreciate the transparency, professionalism, and efficiency, often feeling like priority clients due to the exceptional service and attention to their needs.

    • Improved Communication and Team Dynamics

      The use of DISC D3 insights by EFFECTIVENESS INC has led to better communication and collaboration within teams. Clients report improved management effectiveness and smoother cooperation with clear expectations and adapted communication styles.

    • Strong Project Management

      Clients highlight EFFECTIVENESS INC's structured and flexible project management. They deliver on time, maintain clear communication, and adapt to evolving needs. Their responsiveness and availability make them feel like partners rather than vendors.

    • Exceptional Client Focus

      EFFECTIVENESS INC demonstrates high responsiveness, availability, and a client-focused approach. They provide practical guidance, are quick to respond, and show genuine investment in client success, fostering a true partnership.

    • High-Quality Training and Materials

      Clients praise the high quality of EFFECTIVENESS INC's training programs and materials. Their practical approach is designed for real-world application, combining modern tools with a deep understanding of people and organizations.

    EFFECTIVENESS INC Reviews

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    Corporate Training & Coaching for Medical Equipment Co

    • Corporate Training & Coaching HR Consulting
    • $10,000 to $49,999
    • Jan. 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "What truly differentiates the team is their exceptional availability and willingness to share expertise."

    Mar 27, 2026
    Training Manager, Reha Fund Sp zoo
    Dorota Foryś
    Verified
    • Medical
    • Warsaw, Poland
    • 51-200 Employees
    • Online Review
    • Verified

    EFFECTIVENESS INC provides psychometric assessment tools and expert guidance for a medical equipment company. The client's goal is to enable more data-driven decisions in recruitment and leadership development.

    HR Consulting for Leadership Development Firm

    • HR Consulting
    • Confidential
    • Jan. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "What impressed me the most about EFFECTIVENESS INC is their very practical approach to development."

    Mar 26, 2026
    Owner, FSD
    Agnieszka Szczesna
    Verified
    • Business services
    • Torun, Poland
    • 1-10 Employees
    • Online Review
    • Verified

    EFFECTIVENESS INC provides training and consulting services for a leadership development firm. They use the DISC D3 methodology to understand behavioral patterns and work with teams and leaders.

    HR Consulting Services for Consulting Firm

    • HR Consulting
    • $50,000 to $199,999
    • Jan. 2017 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "What impressed us most was their direct and reliable support whenever we needed it."

    Mar 20, 2026
    CEO, Saleswise Sp. z o.o.
    Damian Feilhauer
    Verified
    • Business services
    • Poznan, Poland
    • 1-10 Employees
    • Online Review
    • Verified

    EFFECTIVENESS INC has implemented a psychometric assessment tool for a consulting firm to provide data on interpersonal competencies. The goal is to make better recruitment decisions.

    Training Services for Building Materials Manufacturing Co

    • Corporate Training & Coaching
    • $10,000 to $49,999
    • Jan. 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Coaches from EFFECTIVENESS INC are very professional, with deep insights and broad knowledge about business processes."

    Mar 12, 2026
    HR Director, H+H
    Agnieszka Jaraczewska
    Verified
    • Manufacturing
    • Poland
    • 501-1,000 Employees
    • Online Review
    • Verified

    EFFECTIVENESS INC provides training services for a building materials manufacturing company. The team has assessed and developed employee competencies using the DISC D3 methodology and provided sales training.

    DISC D3 Customization for Recruitment Solutions Company

    • Corporate Training & Coaching HR Consulting Staffing
    • Less than $10,000
    • Oct. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    “They’re top class!”

    Sep 27, 2025
    CEO & Founder, CANDIDFUTURE
    Agnieszka Myśliwczyk
    Verified
    • Other industries
    • Gdansk, Poland
    • 1-10 Employees
    • Online Review
    • Verified

    EFFECTIVENESS INC has customized and implemented DISC D3 competency assessments for a recruitment solutions firm. The team provides reports on behavioral styles, strengths, growth areas, and team fit.

    Corporate Training & Coaching for Education Company

    • Business Consulting Corporate Training & Coaching Recruiting
    • Less than $10,000
    • Jan. 2023 - July 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "I would recommend their services to every company."

    Jul 8, 2024
    CEO, Academy of Language LLC
    Katarzyna Murphy
    Verified
    • Education
    • Warsaw, Poland
    • 11-50 Employees
    • Online Review
    • Verified

    An education company hired EFFECTIVENESS INC for corporate training and coaching services. The team was responsible for taking the client through a leadership skills program and goal evaluation processes. 

    Corporate Training for Real Estate Company

    • Corporate Training & Coaching HR Consulting Talent Representation
    • Less than $10,000
    • Apr. 2017 - Feb. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    4.5

    "The greatest value was the ongoing merit-based support even after the project ended."

    Feb 15, 2024
    HR Manager, VINCI Facilities Polska Sp.z o.o.
    Magdalena Wachnicka
    Verified
    • Real estate
    • Warsaw, Poland
    • 201-500 Employees
    • Online Review
    • Verified

    EFFECTIVENESS INC provided corporate training services for a real estate company. The scope included analysis of staff competencies and business performance management.

    Showing 1-8 of 8 Reviews

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    8
    Overall Review Rating
    5
    Source
    Clutch
    Last Updated
    March 27, 2026

    Business Entity

    Business Entity Name EFFECTIVENESS Anna Sarnacka-Smith
    Source Poland Central Statistical Office
    Jurisdiction of Formation Poland
    Date of Formation September 1, 2016
    Status Active
    Last Updated September 18, 2025
    ID REGON: 365260304 NIP: 5432072090

    Credit Report Results

    International Credit Risk Assessment High Risk
    Source Creditsafe
    Last Updated September 18, 2025

    *Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.

    Learn More About The Clutch Verification Process

    Locations (2)

    27 Rodziny Połanieckich WarszawaPoland 01-924

    6 - 9

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    CandidAcademy

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    Agnieszka Myśliwczyk

    EFFECTIVENESS - Badania kompetencji

    (1)
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    Anna Sarnacka-Smith