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High proficiency software developers

Fively is a team of 80+ full-stack software engineers who take inspiration from the hardest business challenges.

We are focused, but not limited, on trendsetting startups and worldwide outsourcing software development for SMEs. Our brightest engineers and designers provide customers with cutting-edge flawless solutions perfectly created to be agile and resilient.

Key clients: SNAP, Zentist, Uniqkey, BloXmove, AviMedical, SwordFish.

  • Min project size
    $25,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    50 - 249
  • Locations
    Warszawa, Poland
  • Year founded
    Founded 2018

Overview by:

Reviewer avatar
Alexey Kalachik
CEO / Co-Founder About the Team

1 Locations

  • Warszawa , Poland

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    Pricing Snapshot

    Min. project size $25,000+
    Avg. hourly rate $50 - $99 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    Fively offers good value for cost, with clients noting budget alignment and high-quality work. Specific project costs vary, with investments ranging from $25,000 to over $400,000. Clients appreciate their flexibility, communication, and the ability to adapt to project needs.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $50,000 - $199,999 based on 18 reviews
    < $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

    Select a service to see pricing information

    Highly Rated Similar Providers

    Fively Review Insights

    Overall Review Rating

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

    Top Mentions

    Review Highlights

    • Responsive and Transparent Communication

      Fively is recognized for maintaining clear and transparent communication with clients, ensuring all parties are aligned and informed throughout the project's lifecycle.

    • Areas for Improvement in Documentation

      Some clients noted the need for more structured documentation, which could enhance future project iterations and ease knowledge transfer.

    • Strong Cultural and Value Alignment

      Fively is praised for aligning well with client cultures and values, offering a great fit for collaborative environments. This cultural synergy is a key factor in their selection by many clients.

    • Smooth Integration with Client Teams

      The ability of Fively's team to integrate seamlessly with client teams is frequently highlighted, fostering an environment of collaboration and shared objectives.

    • Commendable Problem-Solving and Initiative

      Fively's engineers are noted for their proactive approach, often suggesting improvements and solutions beyond the initial scope, which enhances the quality and functionality of the delivered products.

    • Commitment to Quality and Deadlines

      Fively's dedication to delivering quality work on time is a recurring theme in client feedback, underscoring their reliability and commitment to client success.

    Fively Reviews

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    Industry
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    System Refactoring for Electronic Flight Bag Solutions Firm

    • Custom Software Development
    • Confidential
    • July 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The most impressive thing about them is how they handle complex refactoring without disrupting the overall system."

    Feb 2, 2026
    CTO, DextraData GmbH
    Jorge Martins
    Verified
    • Other industries
    • Essen, Germany
    • 51-200 Employees
    • Online Review
    • Verified

    Fively has refactored the outdated parts of an electronic flight bag solutions firm. They've analyzed the existing codebase, rewritten critical functions as new microservices, and managed a MongoDB database.

    Web App & Extension Design & Development for Nonprofit Org

    • Application Testing UX/UI Design Web Development
    • Confidential
    • Jan. - Feb. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "The speed and quality were outstanding."

    Mar 10, 2025
    Founder & CEO, The Population Project
    Antoine Bello
    Verified
    • Non-profit
    • Charlotte, North Carolina
    • 11-50 Employees
    • Online Review
    • Verified

    Fively developed a Google Chrome extension and a complementary SaaS web app for a nonprofit organization. Using React, Plasmo, NestJS, and PostgreSQL, they built an extension and a platform to track web visits.

    Web Portal Revamp & Support for Waste Diversion Company

    • Custom Software Development UX/UI Design Web Development
    • Confidential
    • Mar. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    4.5
    Willing to Refer
    5.0

    "Their engineers demonstrate deep technical expertise and commitment to delivering a properly functioning web portal."

    Dec 5, 2024
    Business Process Manager, Happen Ventures
    Farid Casir
    Verified
    • Supply Chain, Logistics, and Transport
    • Puerto Rico
    • 11-50 Employees
    • Online Review
    • Verified

    Fively initially supported a waste diversion firm in implementing minor improvements to its no-code-based web portal. They've since transformed the portal into a software stack and added new features.

    Marketplace Platform Design & Dev for Firearms Company

    • E-Commerce Development Web Development
    • $50,000 to $199,999
    • June - Sep. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything they provided was top-notch."

    Sep 23, 2024
    CEO, Gunsnation.com
    Nick Sawinyh
    Verified
    • eCommerce
    • Lexington, Kentucky
    • 1-10 Employees
    • Online Review
    • Verified

    Fively was hired by a firearms company to design and develop an e-commerce marketplace platform. The team built the site's backend and frontend using Strapi and Next.js.

    AI, Custom Software Dev & Design for AI Analytics Company

    • AI Development Custom Software Development Other Design
    • Confidential
    • April 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We are very satisfied with the result of our cooperation so far."

    May 6, 2024
    CEO, AI Analytics Company
    Moshe Borouchov
    Verified
    • Information technology
    • New York City, New York
    • 1-10 Employees
    • Online Review
    • Verified

    Fively developed and designed an AI behavioral prediction platform for an AI analytics company. This included integrating AI features, creating a web app and Chrome extensions, and using React.js and Python.

    Staff Augmentation for Cryptocurrency Donation Platform

    • IT Staff Augmentation
    • $50,000 to $199,999
    • Mar. - Apr. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "I look forward to working with them again in the future!"

    Apr 29, 2024
    Chief of Product, Coinjoy
    DM Suja (MBA, PMP)
    Verified
    • Arts, entertainment & music
    • Orlando, Florida
    • 1-10 Employees
    • Online Review
    • Verified

    Fively sourced engineers for a cryptocurrency donation platform, helping them develop their app, which included fixing bugs, optimizing performance, adding features, and leveraging PHP 8.1 and Laravel.

    Web Development for Heavy Equipment Company

    • E-Commerce Development UX/UI Design Web Development
    • Confidential
    • Aug. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They make the most of resources, demonstrating their experience and commitment to delivering effective solutions."

    Feb 14, 2024
    VP Product Development, eqhq
    Matt Kelly
    Verified
    • Other industries
    • Bethesda, Maryland
    • 1-10 Employees
    • Online Review
    • Verified

    A heavy equipment company has hired Fively to revamp their platform by enhancing its functionality. They've used AWS, Javascript, Node.js, and React to make several minor updates.

    Custom Software Dev for Legal Tech Solutions Co

    • API Development Application Testing Custom Software Development
    • Confidential
    • July 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0
    "We collaborate with top-notch web developers who tackle challenges fearlessly."
    Nov 9, 2023
    CTO, Legal Tech Solutions Company
    Anonymous
    Verified
    • Other industries
    • London, England
    • 51-200 Employees
    • Online Review
    • Verified

    Fively has developed a web-based solution for a legal tech solutions company. The team works on the product's functionality using Python, FastAPI, Django, PostgreSQL, Celery, Redis, RabbitMQ, RPC, and more.

    Website Development for SEO Services Company

    • Web Development
    • Less than $10,000
    • Apr. - July 2023
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their punctuality and dedication to delivering on time were truly impressive."

    Jul 26, 2023
    CEO, Primeseo
    Yana Ihnatchyck
    Verified
    • Advertising & marketing
    • Batumi, Georgia
    • 1-10 Employees
    • Online Review
    • Verified

    Fively developed a website for an SEO services company. The team was responsible for front- and backend development, architecture, testing, QA, deployment, maintenance, and CMS integration with WordPress.

    UX/UI Design & Custom Software Dev for IT Consultancy

    • Application Testing Custom Software Development Cybersecurity E-Commerce Development IT Managed Services IT Strategy Consulting Other Application Development Other IT Consulting and SI Web Development
    • Confidential
    • Sep. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They are experts in their field, and we rely heavily on their technical knowledge."

    Apr 20, 2023
    CEO, IT Consultancy
    Anonymous
    Verified
    • Other industries
    • Oslo, Norway
    • 1-10 Employees
    • Online Review
    • Verified

    Fively provides design and development services for an IT consultancy. They've designed the platform's UX/UI, developed features, implemented security protocols, and automated integrations.

    Showing 1-10 of 30 Reviews

    Our Story

    Fively is a custom software development company helping startups, SMEs, and enterprises build web and cloud solutions. Founded in 2018, the team of 100+ engineers, designers, and QA specialists delivers end-to-end services: consulting, design, development, testing, and support. We focus on industries like FinTech, HealthTech, eCommerce, and real estate, using modern technologies to create tailored, scalable software solutions that drive business growth.

    Find more: https://5ly.co/about/

    Meet the Team

    Alexey Kalachik

    Alexey KalachikCEO / Co-Founder

    CEO and Co-Founder at Fively with 15+ years in custom software development. Experienced in leading web and mobile projects for top clients like Schiphol Airport and the NFL, ensuring quality delivery, risk management, and scalable development teams.

    What Sets Us Apart

    Free consultation & estimation

    We provide an initial consultation and project estimate at no cost.

    Accurate project estimates

    You get a precise estimation before the project starts, so there are no surprises.

    Completely transparent communication

    We have nothing to hide and keep you fully informed at every step.

    Locations (1)

    Senatorska 2 WarszawaPoland 00-075

    50 - 75

    Contact Fively

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    Alex Kalachyk

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