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Home Software Developers Kotlin Spain Madrid

Top Kotlin Developers in Madrid

Ratings Updated: April 5, 2026
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5 Leaders 6 Contenders

11 Companies

Country: Spain
City: Madrid
Programming & Scripting: Kotlin

List of the Top Madrid Kotlin Development Services

  • WiserBrand Logotype

    4.9 15 reviews
    Premier Verified
    $10,000+
    $100 - $149 / hr
    50 - 249
    Madrid, Spain

    Services provided

    10% Custom Software Development
    10% Pay Per Click
    5% AI Agents +15
    5% AI Consulting
    5% AI Development
    5% Advertising
    5% Business Consulting
    5% Content Marketing
    5% Digital Strategy
    5% E-Commerce Development
    5% Ecommerce Marketing
    5% Email Marketing
    5% Generative AI
    5% IT Staff Augmentation
    5% IT Strategy Consulting
    5% Search Engine Optimization
    5% UX/UI Design
    5% Web Design

    Focus Areas

    10% Kotlin
    25% JavaScript
    15% PHP +5
    15% Python
    10% AJAX
    10% SQL
    10% Swift
    5% Other programming & scripting languages

    WiserBrand is a custom software development company specializing in tailored software creation and end-to-end software development services. Their reviews highlight a 100% positive feedback rate, emphasizing efficient project delivery, strong communication, and alignment with business goals. Clients appreciate their ability to streamline processes and enhance user adoption through practical solutions.

    See all 15 projects

    Industry Experience

    WiserBrand has demonstrated expertise across diverse industries, including Retail, E-Commerce, IT, Legal, and Advertising. Clients commend their robust project management and technical proficiency, particularly in e-commerce solutions, SEO, and web development. Feedback highlights their effective communication, timely delivery, and ability to enhance user experience, leading to measurable improvements in sales and online presence. Overall, WiserBrand is highly regarded in Retail and Advertising, while also proving valuable in IT and Legal sectors.

    Read All Reviews

    Select Industry to see insights

    Retail Consulting IT Services Information technology Legal Social Networking Advertising & marketing

    Average Project Cost Breakdown

    $10,000 to $49,000 (4) Less than $10,000 (3) $50,000 to $199,999 (3) $200,000 to $999,999 (2)

    What Clients Have Said

    Clients consistently commend WiserBrand for their strong value for money, highlighting effective project delivery within budget constraints. One COO noted, "Good value for cost," while a CEO emphasized that WiserBrand's pricing fit their budget. Overall sentiment reflects satisfaction with the quality of services relative to investment, as multiple clients reported timely delivery and positive outcomes, reinforcing the perception of WiserBrand as a cost-effective partner in achieving business objectives.
    Read All Reviews

    More responsive than most other service providers

    WiserBrand is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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    View projects from:

    United States (7) Ukraine (3) Israel (1) Mexico (1)

    This provider is fluent in 3 languages:

    • English
    • Spanish
    • Portuguese

    This provider is available in 3 time zones:

    • Central European Time (CET)
    • Eastern European Time (EET)
    • Eastern Standard Time (EST)
    View Profile Visit Website
  • App Design Agency Logotype

    5.0 3 reviews
    Verified
    $25,000+
    $25 - $49 / hr
    2 - 9
    Madrid, Spain

    Services provided

    25% Custom Software Development
    25% E-Commerce Development
    25% Mobile App Development +1
    25% Web Development

    Focus Areas

    20% Kotlin
    20% Java
    20% JavaScript +2
    20% PHP
    20% Swift

    App Design Agency is a Custom Software Creation company specializing in full-cycle software development, including UX/UI design, backend architecture, and compliance alignment. Clients express high satisfaction, with 85% rating their experience as "excellent" or "very good" and an average satisfaction score of 4.4 out of 5. The agency is praised for its technical expertise and proactive approach but could improve by providing more detailed documentation earlier in the process.

    See all 3 projects

    Average Project Cost Breakdown

    $10,000 to $49,000 (2)

    What Clients Have Said

    Clients consistently praise App Design Agency for offering excellent value for money, noting that their pricing aligns well with budget expectations. One CEO highlighted their choice due to 'good value for cost' and the agency's ability to deliver high-quality results, stating, 'The quality of their work was outstanding.' Another client emphasized that their investment of around $100,000 yielded a 50% increase in operational efficiency, reflecting strong returns on investment and overall satisfaction with the agency's services.
    Read All Reviews
    2 of 2 Madrid-based reviews are 5 stars
    1 Madrid-based review for Custom Software Development in past 6 months
    $10,000 – $49,000 avg. project cost for Custom Software Development services in Madrid

    Madrid-based Custom Software Development project highlight

    AI-Powered Billing Software Dev for Software Company

    5.0 — App Design Agency has developed an AI-powered billing software for a software firm. They've designed the UI/UX, built the front- and backend, created a secure billing engine, and integrated Read more
    Read Similar Reviews

    Review Rating from Clients

    5.0/5.0

    Quality

    5.0

    Schedule

    5.0

    Cost

    5.0

    Willing to Refer

    5.0

    Madrid clients commend App Design Agency for their comprehensive app development services, including e-commerce integrations and personalized features. Their agile methodology and innovative insights resulted in a highly rated app that significantly improved operational efficiency and customer experience.
    Read Local Reviews
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  • i-Labs App Development Logotype

    5.0 39 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Madrid, Spain

    Services provided

    50% Mobile App Development
    20% UX/UI Design
    10% Low/No Code Development +2
    10% Web Design
    10% Web Development

    Focus Areas

    20% Kotlin
    20% Swift
    10% JavaScript +8
    10% PHP
    10% Python
    5% C++
    5% Java
    5% Objective C
    5% Redux
    5% Ruby
    5% SQL

    i-Labs App Development specializes in Custom Software Creation and Full Stack Software Development, offering tailored solutions for clients. Their reviews highlight a dedication to quality and proactive problem-solving, with 100% positive feedback praising their commitment to best practices and robust code architecture. Clients are impressed by their seamless collaboration and effective project management.

    See all 39 projects

    Reviews mention Exceptional performance

    The overall sentiment regarding Infrolabs App Development's performance is exceptional, as highlighted by multiple clients. For instance, one CEO noted their 'unmatched QA and coding skills' and 'dedication to excellence,' while another praised their 'unique blend of technical expertise, professionalism, and steadfast devotion.' Clients consistently reported significant improvements in user engagement and satisfaction, with one stating the team was 'always eager to take on new challenges.' Overall, Infrolabs is recognized for their outstanding project management and commitment to delivering high-quality results.
    • Mobile & Web Dev for Photography & Film Equipment Marketplace
      5.0 Mar 5, 2024

      Their involvement has had an absolutely amazing effect. We saw an unprecedented surge in our ratings, which averaged more than 4.4 stars on all review sites. Customers praised the app experience as well as the printed materials that came with it, which is evidence of Infrolabs' dedication to excellence. It's evident that our audience has found value in their work because the Mac OS software has had over 300,100 downloads, while the iOS app has received 150,100 downloads. But the people behind the coding are just as important as the statistics. In comparison to our prior collaborators, Infrolabs has proven to be a breath of fresh air. They have unmatched QA and coding skills, as well as a constant focus on excellence and attention to detail. They have even gone above and above in the face of difficulties, frequently working long hours or weekends to address any problems head-on. It is very admirable that they are always eager to take on new challenges and produce outstanding outcomes.

      Read Full Review
    • Mobile App Development for Education Company
      5.0 Mar 23, 2024

      Despite a small pause owing to a scheduled operation, our relationship with Infrolabs is on track for future success. Their rapid and rigorous execution demonstrates their influence, as they routinely provide significant gains each week. Notably, their devotion to quality is demonstrated by the execution of comprehensive QA testing from the start of the project, which ensures our app's durability and functioning.

      Read Full Review
    Read All Reviews
    1 of 1 Custom Software Development reviews are 5 stars
    $10,000 – $49,000 avg. project cost

    Custom Software Development PROJECT HIGHLIGHT

    Solution Design & Dev for Premium Building Materials Co

    5.0 — A premium building materials company hired Infrolabs App Development to develop a user-friendly gateway for their privacy solution. The client wanted an intuitive interface and a quality code Read more
    Read 1 Review

    View projects from:

    United States (16) Spain (2) England (2) Canada (1) India (1)

    Madrid, Spain

    Paseo de la castellana 43
    Madrid, Spain 28046

    16 - 20

    +34602065192

    See All Locations (3)
    View Profile

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  • Baufest Logotype

    4.7 3 reviews
    $100,000+
    $100 - $149 / hr
    1,000 - 9,999
    Madrid, Spain

    Services provided

    30% Custom Software Development
    25% BI & Big Data Consulting & SI
    15% Cloud Consulting & SI +3
    10% Cybersecurity
    10% UX/UI Design
    10% Web Development

    Focus Areas

    10% Kotlin
    10% Ember.js
    10% Java +7
    10% JavaScript
    10% Objective C
    10% Other programming & scripting languages
    10% PHP
    10% Python
    10% Redux
    10% Visual Basic

    Baufest is a bespoke software development company specializing in custom software creation and full-stack software development services. Approximately 90% of feedback emphasizes their professional project management and technical expertise, with clients frequently highlighting their commitment to project success and adaptability. While generally positive, about 20% of reviewers suggest improvements in proactive communication and personnel stability.

    See all 3 projects

    Reviews mention Timely

    Clients have expressed a high level of satisfaction with Baufest's timeliness, noting their professionalism in meeting deadlines and project goals. One client highlighted the effectiveness of regular communication through phone calls and monthly follow-ups, reinforcing Baufest's commitment to maintaining schedules. Overall, the sentiment surrounding timeliness is positive, with clients appreciating the team's dedication to delivering on time and their willingness to ensure project success.
    • Software Development for Maritime Transportation Company
      5.0 Apr 15, 2021

      We have constant phone calls and video meetings. Our teams also have a monthly follow-up meeting. Baufest has been very professional regarding deadlines and goals.

      Read Full Review
    Read All Reviews
    1 of 3 Custom Software Development reviews are 5 stars
    $10,000 – $49,000 avg. project cost

    Custom Software Development PROJECT HIGHLIGHT

    Product Implementation for Logistics Services Group

    4.5 — Baufest provided product implementation services for a logistics services group. The team was responsible for replacing modules and creating new features. Read more
    Read 3 Reviews

    Average Project Cost Breakdown

    $50,000 to $199,999 (2) $10,000 to $49,000 (1)

    What Clients Have Said

    Clients have consistently praised Baufest for delivering high-quality services that offer significant value for money. One client noted an investment of approximately $80,000 resulted in a stable and effective system that has performed well for years. Another mentioned project costs ranging from $1,000 to $20,000, highlighting the cost-effectiveness of their services. Overall, feedback indicates that clients feel Baufest's pricing aligns well with the quality of work and commitment they provide.
    Read All Reviews

    Madrid, Spain

    Calle Francisco Giralte 2, Chamartín Madrid
    Madrid, Spain 28002

    2 - 5

    +34 (91) 745-2763

    See All Locations (6)
    View Profile
  • Acid Tango Logotype

    4.6 8 reviews
    $10,000+
    $50 - $99 / hr
    10 - 49
    Madrid, Spain

    Services provided

    40% Custom Software Development
    30% Mobile App Development
    30% UX/UI Design

    Focus Areas

    10% Kotlin
    20% JavaScript
    20% Python +5
    10% Java
    10% Other programming & scripting languages
    10% Redux
    10% Ruby
    10% SQL

    Acid Tango is a bespoke software development company specializing in custom software creation and full-stack development. With an impressive 100% positive feedback rate across reviews, clients commend their technical expertise, project management skills, and proactive approach. Themes of collaboration and innovative solutions are frequently noted, while some reviews suggest a need for more involvement in post-release testing and marketing strategies.

    See all 8 projects

    Reviews mention Great team

    Clients consistently express high satisfaction with Acid Tango's team, highlighting their broad experience and collaborative approach. One client praised the team's spirit and industry knowledge, noting their impressive project management style during the COVID lockdown. The company received commendations for their effective communication and inclusion throughout the project. Overall, the sentiment reflects a strong endorsement of their capabilities, with clients recommending their services due to the team's proficiency and dedication.
    • Web Development for Real Estate Company
      4.5 Feb 1, 2021

      The work and the way they worked as a team is brilliant and we highly recommend working with them. The team's spirit and knowledge of the industry was excellent.

      Read Full Review
    Read All Reviews

    Industry Experience

    Acid Tango has demonstrated expertise across various industries, including Arts, Information Technology, Retail, Real Estate, and Mobility. Clients commend their strong UX/UI design skills, effective project management, and adaptability to different business needs. Overall sentiment is positive, with feedback highlighting their ability to deliver quality solutions efficiently. The provider is particularly suited for projects requiring innovative design and agile development, making them a strong candidate for technology-driven sectors.

    Read All Reviews

    Select Industry to see insights

    Other industries Arts, entertainment & music Information technology Retail Consulting Real estate IT Services

    View projects from:

    Spain (6) Mexico (1)
    1 of 1 Madrid-based review is 5 stars
    $200,000 – $999,999 avg. project cost for Custom Software Development services in Madrid

    Madrid-based Custom Software Development project highlight

    Custom Software Dev. for Transport & Mobility Startup

    5.0 — Acid Tango developed custom software for a transportation and mobility startup. The team is responsible for backend integrations, developing and designing our website, and building our ReactNative Read more
    Read Similar Reviews
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  • Karumi Logotype

    Not yet reviewed

    $10,000+
    $50 - $99 / hr
    2 - 9
    Madrid, Spain

    Services provided

    20% Custom Software Development
    70% Mobile App Development
    5% IoT Development +1
    5% Web Development

    Focus Areas

    50% Kotlin
    50% Swift

    Karumi is a Madrid, Spain-based mobile app development company. They focus on Mobile App Development and Custom Software Development.

    Read more
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  • Airtouch Media Logotype

    Not yet reviewed

    $25,000+
    $25 - $49 / hr
    10 - 49
    Madrid, Spain

    Services provided

    20% Custom Software Development
    40% Mobile App Development
    20% IT Staff Augmentation +2
    10% IT Managed Services
    10% Web Development

    Focus Areas

    10% Kotlin
    20% JavaScript
    20% Python +5
    10% C#
    10% C++
    10% Objective C
    10% SQL
    10% Swift

    Mobile application development company Airtouch Media is headquartered in Madrid, Spain and București, Romania. Their services include Mobile App Development and Custom Software Development.

    Read more
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  • CGTS CORP Inc. Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    50 - 249
    San Sebastián de los Reyes, Spain

    Services provided

    25% Custom Software Development
    20% Mobile App Development
    20% Web Development +3
    15% IT Staff Augmentation
    10% Application Testing
    10% Low/No Code Development

    Focus Areas

    10% Kotlin
    40% Java
    15% AJAX +4
    15% SQL
    10% Redux
    5% Python
    5% Swift

    Established in 2014, CGTS CORP Inc. Is a midsize software development firm. Their team specializes in Custom Software Development and Web Development.

    Read more

    San Sebastián de los Reyes, Spain

    Av. Somosierra Num. 12 , 28703, San Sebastian de los Reyes
    San Sebastián de los Reyes, Spain 28703

    31 - 40

    34910400950

    See All Locations (4)
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  • SDLC Corp Logotype

    5.0 11 reviews
    $50,000+
    $25 - $49 / hr
    250 - 999
    Madrid, Spain

    Services provided

    30% Custom Software Development
    20% Web Development
    15% AI Development +4
    15% Mobile App Development
    8% ERP Consulting and SI
    7% CRM Consulting and SI
    5% Blockchain

    Focus Areas

    25% Kotlin
    30% Swift
    20% JavaScript +2
    15% Typescript
    10% Java

    SDLC Corp is a Custom Software Development company specializing in bespoke software creation, full stack software development, and end-to-end software development solutions. They are commended for their technical expertise, professionalism, and effective project management, with 100% of reviewers highlighting their transparency and dependability. They consistently provide tailored software development solutions that align with business needs.

    See all 11 projects

    Reviews mention Knowledgeable

    Clients have consistently praised SDLC Corp for their technical expertise and professionalism. One client highlighted their 'great technical knowledge' and noted that the process was 'very smooth,' with the team effectively guiding them through each step. Regular updates and attentive communication from the project manager reinforced the client's confidence in the team's capabilities. Overall, the sentiment regarding SDLC Corp's knowledge and expertise is highly positive, indicating a strong fit for technical projects.
    • CRM Dev & Web Redesign for Recruitment Firm
      5.0 May 29, 2021

      They have great technical knowledge and the entire experience was very smooth. Initially I had to only share my requirements. After that, they took care of everything.

      Read Full Review
    Read All Reviews
    4 of 4 Custom Software Development reviews are 5 stars
    Less than $10,000 avg. project cost

    Custom Software Development PROJECT HIGHLIGHT

    Legacy Product Revamp for Proofchain Protocol Provider

    5.0 — SDLC Corp rewrote code for a legacy enterprise product. The team revamped the architecture, optimizing and building out the new UI and UX. The team also migrated their technology stack to the MERN Read more
    Read 4 Reviews

    Average Project Cost Breakdown

    $10,000 to $49,000 (4) Less than $10,000 (2) $50,000 to $199,999 (1)

    What Clients Have Said

    Overall, clients express satisfaction with SDLC Corp's cost and value for money. They consistently deliver projects on time and meet expectations, with one client noting a 30% revenue increase due to their software solutions. Another highlighted their transparency and professionalism, stating they were impressed by the competitive pricing and quality of work. Clients appreciate their commitment to client satisfaction and timely delivery, reinforcing the perception of good value relative to cost.
    Read All Reviews

    Madrid, Spain

    Calle de Alcalá, 50
    Madrid, Spain 28014

    21 - 30

    +34911234567

    See All Locations (23)
    View Profile
  • GeneticAI Logotype

    Not yet reviewed

    $1,000+
    $100 - $149 / hr
    10 - 49
    Pozuelo de Alarcón, Spain

    Services provided

    20% AI Consulting
    20% AI Development
    20% Mobile App Development +4
    15% AR/VR Development
    10% Event Management
    10% Web Design
    5% Generative AI

    Focus Areas

    16% Kotlin
    23% ASP.NET
    23% C# +2
    23% Python
    15% Swift

    GeneticAI is a small AI development company in Pozuelo de Alarcón, Spain. The team offers Artificial Intelligence and Mobile App Development.

    Read more
    View Profile
  • Excibit Solutions Logotype

    Not yet reviewed

    $5,000+
    $25 - $49 / hr
    10 - 49
    Madrid, Spain

    Services provided

    30% Web Development
    15% BI & Big Data Consulting & SI
    15% Cloud Consulting & SI +6
    14% Low/No Code Development
    10% Mobile App Development
    5% AI Development
    5% Product Design
    5% UX/UI Design
    1% Web Design

    Focus Areas

    10% Kotlin
    20% JavaScript
    20% Python +5
    15% Java
    10% Go
    10% Redux
    10% Swift
    5% Typescript

    Excibit Solutions is a web development company launched in 2016. The agency specializes in Web Development and BI & big data consulting & SI.

    Read more
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1 i-Labs App Development
2 Baufest
3 Acid Tango
4 WiserBrand
5 App Design Agency

List of the Top 5 Madrid Kotlin Development Services

  1. i-Labs App Development Logotype

    i-Labs App Development

    $5,000+
    $25 - $49 / hr
    10 - 49
    Madrid, Spain

    Ability to deliver

    32.5/40.0
    18/20 Reviews
    9.7/10 Clients & Experience
    4.8/10 Market Presence

    Service focus

    10% Web Development
    50% Mobile App Development
    40% Other
    View Profile Visit Website
  2. Baufest Logotype

    Baufest

    $100,000+
    $100 - $149 / hr
    1,000 - 9,999
    Madrid, Spain

    Ability to deliver

    30.4/40.0
    15.2/20 Reviews
    8.2/10 Clients & Experience
    7.1/10 Market Presence

    Service focus

    30% Custom Software Development
    10% Kotlin
    10% Web Development
    60% Other
    View Profile Visit Website
  3. Acid Tango Logotype

    Acid Tango

    $10,000+
    $50 - $99 / hr
    10 - 49
    Madrid, Spain

    Ability to deliver

    30.9/40.0
    15.6/20 Reviews
    10/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    40% Custom Software Development
    10% Kotlin
    30% Mobile App Development
    30% Other
    View Profile Visit Website
  4. WiserBrand Logotype

    WiserBrand

    $10,000+
    $100 - $149 / hr
    50 - 249
    Madrid, Spain

    Ability to deliver

    34.9/40.0
    16.8/20 Reviews
    10/10 Clients & Experience
    8.1/10 Market Presence

    Service focus

    10% Custom Software Development
    10% Kotlin
    90% Other
    View Profile Visit Website
  5. App Design Agency Logotype

    App Design Agency

    $25,000+
    $25 - $49 / hr
    2 - 9
    Madrid, Spain

    Ability to deliver

    22.5/40.0
    17/20 Reviews
    0/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    25% Custom Software Development
    20% Kotlin
    25% Web Development
    25% Mobile App Development
    25% Other
    View Profile Visit Website
  6. Karumi Logotype

    Karumi

    $10,000+
    $50 - $99 / hr
    2 - 9
    Madrid, Spain

    Ability to deliver

    5.7/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.7/10 Market Presence

    Service focus

    20% Custom Software Development
    50% Kotlin
    5% Web Development
    70% Mobile App Development
    5% Other
    View Profile Visit Website
  7. Airtouch Media Logotype

    Airtouch Media

    $25,000+
    $25 - $49 / hr
    10 - 49
    Madrid, Spain

    Ability to deliver

    9.2/40.0
    0/20 Reviews
    3.7/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    20% Custom Software Development
    10% Kotlin
    10% Web Development
    40% Mobile App Development
    30% Other
    View Profile Visit Website
  8. CGTS CORP Inc. Logotype

    CGTS CORP Inc.

    $10,000+
    $25 - $49 / hr
    50 - 249
    San Sebastián de los Reyes, Spain

    Ability to deliver

    4.9/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    25% Custom Software Development
    10% Kotlin
    20% Web Development
    20% Mobile App Development
    35% Other
    View Profile Visit Website
  9. SDLC Corp Logotype

    SDLC Corp

    $50,000+
    $25 - $49 / hr
    250 - 999
    Madrid, Spain

    Ability to deliver

    6/40.0
    0/20 Reviews
    0/10 Clients & Experience
    6/10 Market Presence

    Service focus

    30% Custom Software Development
    25% Kotlin
    20% Web Development
    15% Mobile App Development
    35% Other
    View Profile Visit Website
  10. GeneticAI Logotype

    GeneticAI

    $1,000+
    $100 - $149 / hr
    10 - 49
    Pozuelo de Alarcón, Spain

    Ability to deliver

    5.2/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    20% Mobile App Development
    15% AR/VR Development
    65% Other
    View Profile Visit Website
  11. Excibit Solutions Logotype

    Excibit Solutions

    $5,000+
    $25 - $49 / hr
    10 - 49
    Madrid, Spain

    Ability to deliver

    4.6/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    30% Web Development
    10% Mobile App Development
    60% Other
    View Profile Visit Website

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