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Top Virtual Assistant Services in Sofia

Ratings Updated: April 1, 2026
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2 Leaders 4 Contenders

6 Companies

Country: Bulgaria
City: Sofia
Back Office Outsourcing: Virtual Assistant

List of the Top Sofia Virtual Assistant Companies

  • Featured

    What are Featured Providers?

    Remote CoWorker Logotype

    Remote CoWorker

    4.8 176 reviews
    Premier Verified
    $1,000+
    < $25 / hr
    1,000 - 9,999
    Serves Sofia, Bulgaria

    Services provided

    45% Back Office Outsourcing
    15% Finance & Accounting Outsourcing (FAO)
    10% Call Center Services +3
    10% Customer Service Outsourcing
    10% HR Consulting
    10% Sales Outsourcing

    Focus Areas

    25% Virtual Assistant
    25% Data Entry & Processing
    10% Claims Processing +4
    10% Legal Outsourcing
    10% Medical Billing Services
    10% Payment Processing
    10% Writing & Content Creation Outsourcing

    Remote CoWorker is a Business Process Outsourcing company specializing in Remote Back Office Solutions and Administrative Support Services. Their reviews indicate a high level of client satisfaction, with 100% of reviewers highlighting their efficiency, responsiveness, and professionalism. Clients frequently commend their ability to deliver timely and organized support, leading to increased productivity and time management improvements.

    See all 176 projects

    Reviews mention High-quality work

    Client feedback reflects a strong sentiment towards the high-quality work delivered by Remote CoWorker. One client noted the 'exceptional commitment' and 'accuracy' of their virtual assistant, contributing to increased organizational efficiency. Another emphasized their 'top-notch' candidates and 'smooth, professional' recruitment process. Overall, clients consistently highlighted the team's responsiveness and dedication, with one stating, 'the price is great for the quality of work.' This positive sentiment underscores Remote CoWorker's effectiveness in meeting diverse client needs.
    • Virtual Assistance for Financial Advisory & Consulting Firm
      5.0 Sep 29, 2024

      The project delivered outstanding results, including a 30% increase in operational efficiency due to streamlined workflows and automation, a 50% reduction in email response times, and a 100% accuracy rate in data entry. Customer satisfaction surged with faster, more responsive support, and clear, actionable reports led to quicker decision-making. These measurable outcomes not only enhanced productivity but also significantly boosted client retention and internal performance.

      Read Full Review
    • Back Office Outsourcing for Lumber Company
      5.0 Sep 16, 2024

      What stands out to me is the consistent quality of service. I appreciate that, and it's why I've remained a customer.

      Read Full Review
    • Virtual Assistance & Content Marketing for SaaS Enterprise
      4.5 Aug 13, 2024

      They delivered on time. They are quick to respond to needs. I was impressed by Remote CoWorker's quality of candidates.

      Read Full Review
    • Back Office Recruiting for Household Moving Company
      5.0 Jul 12, 2024

      Everything is done on time and with a high level of detail. Remote CoWorker has offered high-caliber candidates from the beginning and does a fantastic job vetting staff.

      Read Full Review
    • Document Processing Support for Construction Management Co
      5.0 May 28, 2024

      They delivered over and above what was needed. Projects were delivered on time and to a high quality, just what I needed.

      Read Full Review
    Read All Reviews
    14 of 14 reviews are 5 stars
    9 new reviews for Back Office Outsourcing services
    Less than $10,000 avg. project cost

    Reviewed 14 times in the past 6 months

    Recent reviews of Remote CoWorker highlight exceptional performance in administrative support across various sectors. Clients consistently praised their responsiveness, reliability, and ability to learn quickly. Specific feedback includes a notable increase in productivity, with one client reporting a 30% improvement. Communication was frequently cited as impressive, with clients appreciating timely responses and effective project management. Overall, the sentiment is overwhelmingly positive, with no significant areas for improvement identified by reviewers.
    Read 14 Recent Reviews
    22 of 25 Virtual Assistant reviews are 5 stars
    3 new reviews for Virtual Assistant in past 6 months
    Less than $10,000 avg. project cost

    Virtual Assistant Experience

    Remote CoWorker has received overwhelmingly positive feedback for its Virtual Assistant services, with approximately 95% of clients expressing satisfaction. Key strengths include efficient task management, effective communication, and significant time savings, with clients reporting reclaiming 5-10 hours weekly. Consistent themes include high-quality candidate placement, adaptability, and excellent customer support. Notably, 80% of reviews highlight the positive impact on operational efficiency and productivity. Clients commend the professionalism and proactive approach of the assistants.

    Read Most Recent Review

    View projects from:

    United States (108) Canada (4) United Arab Emirates (2) Australia (1) Belgium (1) Ireland (1) England (1)
    View Profile Visit Website
    Prialto Logotype

    Prialto

    5.0 44 reviews
    Premier Verified
    $1,000+
    < $25 / hr
    250 - 999
    Serves Sofia, Bulgaria

    Services provided

    70% Back Office Outsourcing
    10% Call Center Services
    10% Customer Service Outsourcing +1
    10% Sales Outsourcing

    Focus Areas

    75% Virtual Assistant
    25% Data Entry & Processing

    Prialto is a Business Process Outsourcing company specializing in Administrative Support Services and Remote Office Support. Clients praise their ability to improve efficiency, with 88% of reviews highlighting time savings and improved organization. The company is commended for responsive communication and a supportive team structure, though some suggest industry-specific improvements. Overall, Prialto is a reliable choice for administrative outsourcing needs.

    See all 44 projects

    Reviews mention Personable

    Clients consistently highlight Prialto's personable approach, noting the kindness and attentiveness of their team. One client praised their assigned Sales Assistant, stating he was 'very pleasant to work with' and completed tasks in a timely manner. Another client emphasized the 'kindness' shown by the team, appreciating their willingness to adapt and support when needed. Overall, the sentiment reflects a strong appreciation for Prialto's personable service and commitment to client satisfaction.
    • Administrative Support for Real Estate Solution Co
      5.0 Oct 23, 2025

      Our assigned Sales Assistant, Matt, did an excellent job for us. Very pleasant individual to work with who completed all work in a timely, accurate manner.

      Read Full Review
    Read All Reviews

    Average Project Cost Breakdown

    $10,000 to $49,000 (24) Less than $10,000 (5) $50,000 to $199,999 (1)

    What Clients Have Said

    Clients consistently report that Prialto offers excellent value for money, with many highlighting their competitive pricing and the quality of service provided. For instance, one client noted that Prialto's pricing fit their budget and described the service as a 'good value for cost.' Another client emphasized the significant return on investment, stating they could take on more clients due to the support received. Overall, the sentiment is overwhelmingly positive, with clients appreciating the balance of cost and high-quality assistance.
    Read All Reviews

    View projects from:

    United States (36) Canada (1) England (1)

    This provider is fluent in 2 languages:

    • English
    • Spanish

    This provider is available in 6 time zones:

    • Hawaii Standard Time (HST)
    • Alaska Standard Time (AKST)
    • Central Standard Time (CST)
    • Eastern Standard Time (EST)
    • Pacific Standard Time (PST)
    • Mountain Standard Time (MST)
    $1,500 Best for individuals $4,500 Best for small teams (3 units) $14,500 Best for larger teams (10 units) * Custom pricing

    Prialto Unit

    We made pricing easy. We offer our services by what we call a Prialto Unit; a flat monthly rate with no overage fees or hidden costs. All plans include backup support and ongoing consulting with your Engagement Manager who helps you maximize ROI from our services. Add as many units as you need.
    View Packages
    View Profile Visit Website
    Sharkhelpers Logotype

    Sharkhelpers

    4.9 7 reviews
    Premier Verified
    $1,000+
    < $25 / hr
    10 - 49
    Serves Sofia, Bulgaria

    Services provided

    15% Back Office Outsourcing
    20% Recruiting
    20% Staffing +4
    15% Customer Service Outsourcing
    10% HR Outsourcing
    10% IT Staff Augmentation
    10% Recruitment Process Outsourcing

    Focus Areas

    40% Virtual Assistant
    40% Data Entry & Processing
    10% Legal Outsourcing +1
    10% Writing & Content Creation Outsourcing

    Sharkhelpers is a Business Process Outsourcing (BPO) company specializing in Offshore Administrative Services and Remote Back Office Solutions. The company's reviews reflect a 100% positive sentiment, with 100% of reviewers highlighting their strong project management and personalized support. Clients commend their adaptability, effective communication, and ability to build high-performing remote teams.

    See all 7 projects
    1 of 1 Back Office Outsourcing reviews are 5 stars
    1 new review for Back Office Outsourcing in past 6 months
    Unknown avg. project cost

    Back Office Outsourcing PROJECT HIGHLIGHT

    Staffing Services for AI-Assisted Matching Platform

    5.0 — Sharkhelpers provides staffing services for an AI-assisted matching platform. The team has sourced, screened, and onboarded remote recruiters to support the client's internal hiring needs. Read more
    Read 1 Review

    Average Project Cost Breakdown

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

    What Clients Have Said

    Clients consistently perceive Sharkhelpers as offering excellent value for money, with feedback highlighting their competitive pricing and effective solutions. One client noted, "good value for cost," while another emphasized their "pricing fit our budget." The overall sentiment reflects satisfaction with the quality of candidates provided and the seamless integration of services, suggesting that Sharkhelpers delivers significant value relative to their costs.
    Read All Reviews

    More responsive than most other service providers

    Sharkhelpers is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch

    View projects from:

    United States (4) Canada (1) Spain (1)

    This provider is fluent in 2 languages:

    • English
    • Spanish

    This provider is available in 4 time zones:

    • Colombia Time (COT)
    • Central Standard Time (CST)
    • Eastern Standard Time (EST)
    • Pacific Standard Time (PST)
    View Profile Visit Website
  • MarKam Solutions Logotype

    5.0 9 reviews
    Premier Verified
    $1,000+
    < $25 / hr
    50 - 249
    Sofia, Bulgaria

    Services provided

    10% Back Office Outsourcing
    30% Call Center Services
    20% Customer Service Outsourcing +2
    20% IT Managed Services
    20% Sales Outsourcing

    Focus Areas

    15% Virtual Assistant
    30% Claims Processing
    30% Payment Processing +1
    25% Data Entry & Processing

    MarKam Solutions is a Business Process Outsourcing company specializing in Remote Back Office Solutions and Administrative Support Services. With 100% positive feedback, reviewers commend their flexibility, efficient management structure, and ability to integrate seamlessly with client workflows, enhancing Amazon account operations through dedicated virtual assistant teams.

    See all 9 projects
    1 of 1 Virtual Assistant reviews is 5 stars
    1 new review for Virtual Assistant in past 6 months
    $10,000 – $49,000 avg. project cost

    Virtual Assistant Experience

    MarKam Solutions received overwhelmingly positive feedback for their Virtual Assistant services, with 100% of clients reporting satisfaction. Key strengths include effective project management, timely delivery, and proactive communication. Clients highlighted the team's flexibility and quick adaptation to workflows, describing the collaboration as seamless and akin to an internal partnership. Notably, their impact resulted in increased output and improved operational efficiency, with no significant areas for improvement noted during engagements.

    Read Most Recent Review
    1 of 1 Back Office Outsourcing reviews are 5 stars
    1 new review for Back Office Outsourcing in past 6 months
    $10,000 – $49,000 avg. project cost

    Back Office Outsourcing PROJECT HIGHLIGHT

    Back Office Outsourcing for Creative Agency

    5.0 — MarKam Solutions provided back-office outsourcing services for a creative agency. The team managed virtual assistants who created and optimized Amazon product listings. They handled recruitment and Read more
    Read 1 Review

    Industry Experience

    MarKam Solutions has demonstrated expertise across various sectors, including Advertising & Marketing, Supply Chain & Logistics, Manufacturing, Transportation, and Information Technology. Clients commend their ability to enhance operational efficiency, boost sales, and improve customer satisfaction. The overall sentiment is highly positive, particularly within Supply Chain & Logistics, where they provided significant cost reductions and revenue growth. Their strengths lie in adaptability, effective communication, and a strong understanding of industry-specific needs, making them a suitable partner across these diverse fields.

    Read All Reviews

    Select Industry to see insights

    Advertising & marketing Information technology Supply Chain, Logistics, and Transport Manufacturing Transportation

    Average Project Cost Breakdown

    $50,000 to $199,999 (3) $10,000 to $49,000 (1) $200,000 to $999,999 (1)

    What Clients Have Said

    Clients consistently praised MarKam Solutions for their competitive pricing and excellent value for money. One client highlighted that their pricing fit the budget while providing a 'good value for cost.' Another noted a 35% decrease in labor costs while meeting sales goals, emphasizing affordability without sacrificing quality. Overall, feedback reflects strong satisfaction with cost-effectiveness, suggesting that MarKam Solutions delivers substantial value relative to their fees.
    Read All Reviews
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  • MWDN Logotype

    4.9 22 reviews
    Premier Verified
    $25,000+
    $25 - $49 / hr
    50 - 249
    Sofia, Bulgaria

    Services provided

    10% Back Office Outsourcing
    15% Employer of Record (EOR) Services
    15% IT Staff Augmentation +5
    15% Recruiting
    15% Staffing
    10% Custom Software Development
    10% Executive Search
    10% Recruitment Process Outsourcing

    Focus Areas

    10% Virtual Assistant
    25% Legal Outsourcing
    20% Data Entry & Processing +4
    20% Payment Processing
    10% Claims Processing
    10% Medical Billing Services
    5% Writing & Content Creation Outsourcing

    MWDN is a versatile software development and outsourcing company, specializing in providing skilled development teams and technical solutions. Their services are marked by professionalism, flexibility, and effective project management, consistently delivering on time and adapting to the dynamic needs of their clients. Reviews reflect high satisfaction, with over 90% of clients praising MWDN for their cultural fit, value for cost, and quality of deliverables.

    See all 22 projects

    Reviews mention Passionate about their work

    Clients have expressed a strong sentiment regarding MWDN's passion for their work, noting their 'curiosity and passion for getting the job done no matter what.' This feedback highlights a commitment to quality and responsiveness, with one client describing their project management as 'precise, quick, and a joy to work with.' Overall, the reviews reflect a positive perception of the company's dedication and enthusiasm in delivering successful outcomes.
    • SQL, Visualizations & Dashboard Dev for AI E-Comm Company
      5.0 Jun 27, 2024

      I was impressed with their curiosity and passion for getting the job done no matter what.

      Read Full Review
    Read All Reviews

    Average Project Cost Breakdown

    $200,000 to $999,999 (5) $10,000 to $49,000 (3) $50,000 to $199,999 (1)

    What Clients Have Said

    Clients consistently commend MWDN for providing good value for cost, often highlighting that their pricing fits within budget constraints while delivering high-quality results. For instance, one client noted, "Good value for cost" as a key reason for choosing MWDN, while another emphasized the company's ability to reduce development costs by 50%. Overall sentiment reflects satisfaction with the balance between cost and quality, making MWDN a preferred partner for many organizations.
    Read All Reviews

    More responsive than most other service providers

    MWDN is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch

    View projects from:

    Israel (13) United States (6) Gibraltar (1) Switzerland (1)

    This provider is fluent in 1 language:

    • English
    View Profile Visit Website
  • Flow Logic Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    2 - 9
    Sofia, Bulgaria

    Services provided

    100% Back Office Outsourcing

    Focus Areas

    10% Virtual Assistant
    15% Data Entry & Processing
    15% Legal Outsourcing +5
    15% Revenue Cycle Management
    15% Writing & Content Creation Outsourcing
    10% Claims Processing
    10% Medical Billing Services
    10% Payment Processing

    Flow Logic is a Back Office Outsourcing company. The small Sofia, Bulgaria-based team focuses on Back Office Outsourcing. The firm was launched in 2020.

    Read more
    View Profile

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  • ODEON msc - A TTC brand Logotype

    Not yet reviewed

    $1,000+
    $25 - $49 / hr
    10 - 49
    Sofia, Bulgaria

    Services provided

    10% Back Office Outsourcing
    20% Finance & Accounting Outsourcing (FAO)
    20% HR Consulting +5
    10% Accounting
    10% Business Consulting
    10% Call Center Services
    10% Customer Service Outsourcing
    10% Sales Outsourcing

    Focus Areas

    20% Virtual Assistant
    30% Data Entry & Processing
    10% Claims Processing +4
    10% Legal Outsourcing
    10% Medical Billing Services
    10% Payment Processing
    10% Writing & Content Creation Outsourcing

    Established in 2019, ODEON msc - A TTC brand is a Finance & Accounting Outsourcing (FAO) company. The team offers Finance & Accounting Outsourcing (FAO) and HR Consulting.

    Read more
    View Profile
  • ACS Bulgaria Logotype

    Not yet reviewed

    $5,000+
    $50 - $99 / hr
    10 - 49
    Sofia, Bulgaria

    Services provided

    15% Back Office Outsourcing
    25% Customer Service Outsourcing
    20% Staffing +4
    15% Business Consulting
    15% HR Outsourcing
    5% IT Managed Services
    5% IT Staff Augmentation

    Focus Areas

    10% Virtual Assistant
    40% Data Entry & Processing
    20% Claims Processing +2
    20% Writing & Content Creation Outsourcing
    10% Payment Processing

    ACS Bulgaria is a Customer Service Outsourcing company launched in 2022. The agency provides Customer Service Outsourcing and Staffing.

    Read more
    View Profile
  • Hartona Ltd. Logotype

    Not yet reviewed

    Undisclosed
    < $25 / hr
    2 - 9
    Sofia, Bulgaria

    Services provided

    20% Back Office Outsourcing
    20% BI & Big Data Consulting & SI
    20% Graphic Design +2
    20% Social Media Marketing
    20% Web Development

    Focus Areas

    100% Virtual Assistant

    Social media marketing agency Hartona Ltd. Specializes in Social Media Marketing and Graphic Design. They were founded in 2021.

    Read more
    View Profile

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1 MarKam Solutions
2 MWDN

List of the Top 2 Sofia Virtual Assistant Companies

  1. MarKam Solutions Logotype

    MarKam Solutions

    $1,000+
    < $25 / hr
    50 - 249
    Sofia, Bulgaria

    Ability to deliver

    32.6/40.0
    17.6/20 Reviews
    10/10 Clients & Experience
    5/10 Market Presence

    Service focus

    10% Back Office Outsourcing
    15% Virtual Assistant
    90% Other
    View Profile Visit Website
  2. MWDN Logotype

    MWDN

    $25,000+
    $25 - $49 / hr
    50 - 249
    Sofia, Bulgaria

    Ability to deliver

    33/40.0
    20/20 Reviews
    7.6/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    10% Back Office Outsourcing
    10% Virtual Assistant
    90% Other
    View Profile Visit Website
  3. Flow Logic Logotype

    Flow Logic

    Undisclosed
    Undisclosed
    2 - 9
    Sofia, Bulgaria

    Ability to deliver

    5.3/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    100% Back Office Outsourcing
    10% Virtual Assistant
    View Profile Visit Website
  4. ODEON msc - A TTC brand Logotype

    ODEON msc - A TTC brand

    $1,000+
    $25 - $49 / hr
    10 - 49
    Sofia, Bulgaria

    Ability to deliver

    8.2/40.0
    0/20 Reviews
    3.6/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    10% Back Office Outsourcing
    20% Virtual Assistant
    90% Other
    View Profile Visit Website
  5. ACS Bulgaria Logotype

    ACS Bulgaria

    $5,000+
    $50 - $99 / hr
    10 - 49
    Sofia, Bulgaria

    Ability to deliver

    4.1/40.0
    0/20 Reviews
    0.1/10 Clients & Experience
    4/10 Market Presence

    Service focus

    15% Back Office Outsourcing
    10% Virtual Assistant
    85% Other
    View Profile Visit Website
  6. Hartona Ltd. Logotype

    Hartona Ltd.

    Undisclosed
    < $25 / hr
    2 - 9
    Sofia, Bulgaria

    Ability to deliver

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

    Service focus

    20% Back Office Outsourcing
    100% Virtual Assistant
    80% Other
    View Profile Visit Website

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