Bliscore

Full-Stack Engineer (TypeScript / Next.js)

We’re looking for a "Full-Stack Engineer" to join a product team building and evolving a sophisticated (FinTech SaaS platform).

This role is a great fit for a product-minded engineer who is comfortable working across both (frontend and backend), can quickly navigate an established production codebase, and enjoys taking ownership of features from development through production.

Tech Stack:

TypeScript · React · Next.js · Node.js · PostgreSQL · Supabase · Tailwind CSS · Vercel

What You’ll Do

• Build and enhance product features across frontend and backend
•  Develop and maintain APIs and server-side functionality
•  Work with PostgreSQL and data-intensive application logic
• Integrate third-party APIs, OAuth providers, and webhooks
• Contribute to authentication, authorization, and multi-tenant functionality
• Work with AI/LLM-powered product features and integrations
• Troubleshoot production issues and improve application reliability
• Take ownership of features throughout the full development lifecycle

 What We’re Looking For

• Strong commercial experience with TypeScript, React, and Next.js
• Solid full-stack development background
• Strong experience with PostgreSQL
• Experience with Supabase or a similar PostgreSQL + authentication stack
• Experience building and maintaining REST APIs
• Good understanding of authentication, authorization, and permissions
• Experience with multi-tenant SaaS applications
• Hands-on experience integrating third-party APIs, OAuth, and webhooks
• Experience working with an established production SaaS product
• Ability to understand and confidently work within an existing codebase
• Strong ownership mindset and ability to work independently
• English В2

Nice to Have

• Experience integrating AI/LLM solutions such as OpenAI, Anthropic, or similar
• Background in FinTech, banking, financial, or data-intensive products
• Experience with Vercel and Sentry
• Experience with financial or banking APIs
• Knowledge of Recharts / D3 or other data visualization tools
• Experience with document processing (PDF, DOCX, Excel)

• Swift / SwiftUI experience is a plus

   

About the Role

We’re looking for someone who sees themselves as a Full-Stack Product Engineer, rather than being focused exclusively on frontend or backend development.

You’ll be joining an established product with real users, complex integrations, and meaningful technical challenges. The role requires someone who can understand the bigger picture, make pragmatic engineering decisions, and take ownership of delivering reliable solutions to production.

If you enjoy working on complex SaaS products, solving real product challenges, and having a tangible impact on how a platform evolves, we’d love to hear from you.

What’s In It for You?

• Career Growth — Opportunities to develop and advance.
• Performance Reviews — Regular feedback and support.
• Work Anniversaries — Special gifts to celebrate milestones.
• Flexible Work — Hybrid or remote (Lviv office available).
• Mentorship — Guidance from experienced professionals.
• Accounting Support — We handle the paperwork.
• Paid Time Off — 18 vacation days + 5 sick days per year.
• Extra Leave — 10 additional days off annually.
• Free Office Lunches — Enjoy meals on us.
• Team Events — Gatherings, gifts, and a welcoming atmosphere.

.NET Engineer (Microsoft Teams / Voice Platform)

We are looking for a .NET Engineer to join a product team working on a voice and communication platform with a strong focus on Microsoft Teams integrations.

The product handles voice communication workflows, calls, meetings, recordings, and communication data. In this role, you’ll be responsible for building and improving backend services that connect the platform with the Microsoft Teams ecosystem.

Responsibilities

• Develop backend functionality using C# / .NET and ASP.NET Core
• Build and support integrations with Microsoft Teams
• Work with Microsoft Graph API and Teams communication APIs
• Implement solutions for calls, meetings, recordings, and related communication data
• Develop and maintain REST APIs and integration services
• Diagnose and resolve production issues across Teams and voice-related functionality
• Improve system stability, performance, and scalability

• Participate in backend architecture and technical decision-making

   

Requirements

• 3+ years of professional C# / .NET development experience
• Strong background in backend engineering and ASP.NET Core
• Hands-on commercial experience with Microsoft Teams integrations
• Experience working with Microsoft Graph API
• Practical knowledge of APIs related to Teams calls, meetings, recordings, or communications
• Experience integrating external systems and third-party APIs
• Good understanding of SQL, databases, and backend design principles
• Ability to independently investigate and solve technical issues

• English level: B2 or higher

   

Will be a plus

• Experience with Microsoft Graph Communications APIs
• Teams compliance recording or other call-recording solutions
• Background in VoIP, telephony, voice platforms, or contact center solutions
• Experience with real-time audio/media processing
• Knowledge of WebRTC, SIP, RTP
• Experience with SignalR or WebSockets

• Experience with Azure

   

Who we’re looking for

We’re looking for a backend-focused engineer who already has practical Microsoft Teams integration experience and is comfortable working with complex communication APIs.

The ideal candidate understands not only .NET development, but also how calls, meetings, recordings, and real-time communication integrations behave in production.

What We Offer

• Long-term product project
• Transparent compensation
• Paid vacation and sick leave
• Learning and professional development support
• High-quality equipment
• Paid office lunches
• Anniversary gifts and baby bonus

Full Stack .NET Engineer (Voice / Telephony Platform)

We are looking for a .NET Engineer to join a product development team working on a voice communication and conversation analytics platform.

The product supports real-time voice communications, call recording and processing, and integrations with telephony providers, contact center solutions, and CRM platforms.

The role is primarily focused on backend development with C#/.NET. We are looking for an engineer with solid backend expertise who is comfortable working with APIs, integrations, databases, and real-time systems.

Experience in telephony, VoIP, WebRTC, SIP, UCaaS/CCaaS, or contact center solutions would be a strong advantage.

Tech Stack

C# / .NET 6+ · ASP.NET Core · MS SQL · REST APIs · SignalR · WebSockets · Twilio · WebRTC · Azure · React.js / TypeScript

Responsibilities

• Develop and maintain backend services using C# / .NET
• Build new functionality for voice communication and call recording
• Work with end-to-end call flows, including call initiation, routing, recording, storage, and retrieval
• Design, develop, and maintain REST APIs
• Build integrations with telephony providers, communication platforms, contact center systems, and CRMs
• Develop real-time functionality using SignalR, WebSockets, WebRTC, and Twilio
• Work with relational databases and optimize data access
• Troubleshoot issues related to call flows, third-party integrations, and real-time communications
• Improve application performance, reliability, and scalability
• Participate in technical discussions, estimations, and code reviews

• Collaborate with Product, QA, and Engineering teams throughout the development lifecycle

   

Requirements

• 3+ years of commercial software development experience
• Strong commercial experience with C# / .NET
• Good knowledge of ASP.NET Core
• Solid understanding of backend development and client-server architecture
• Experience developing and integrating REST APIs
• Experience with relational databases and SQL
• Good understanding of asynchronous programming and concurrency
• Experience working with integration-heavy and/or real-time systems
• Understanding of software architecture principles, design patterns, and clean code practices
• Experience with Git and modern development workflows

• English — B2+

   

Key Experience

• Experience with telephony, VoIP, UCaaS/CCaaS, contact center, or voice communication products
• Knowledge of SIP and RTP
• Experience with WebRTC
• Experience with call recording, audio/media processing, or real-time media streaming
• Experience with Twilio or similar communication APIs
• Experience with SignalR / WebSockets
• Integration experience with RingCentral, Microsoft Teams, Zoom, Cisco Webex, Avaya, 8x8, Genesys, Five9, or similar platforms
• Experience troubleshooting network, connectivity, or voice communication issues
• Experience with Azure
• Experience with microservices or distributed systems
• Docker and CI/CD experience
• React.js / TypeScript knowledge
• Experience with transcription, speech-to-text, conversation analytics, or AI/NLP solutions

What’s In It for You?

• Career Growth – Opportunities to develop and advance.
• Performance Reviews – Regular feedback and support.
• Work Anniversaries – Special gifts to celebrate milestones.
• Flexible Work – Hybrid or remote (Lviv office available).
• Mentorship – Guidance from experienced professionals.
• Accounting Support – We handle the paperwork.
• Paid Time Off – 18 vacation days + 5 sick days per year.
• Extra Leave – 10 additional days off annually.
• Free Office Lunches – Enjoy meals on us.
• Team Events – Gatherings, gifts, and a welcoming atmosphere.

📍 Lviv | Hybrid

Important: We are hiring in Lviv only. Candidates from other cities are not considered.

We’re looking for a Manual QA Engineer with 2-3 years of commercial experience to join our team and work on a long-term product project.
 

Responsibilities

• Perform manual testing of web applications
• Execute functional, regression, integration, and basic non-functional testing
• Create and maintain test documentation: test cases, checklists, and bug reports
• Report, track, verify, and retest defects
• Analyze requirements and acceptance criteria
• Participate in test planning and estimation
• Perform API testing using Postman and Swagger
• Support release and regression testing
• Collaborate closely with developers, designers, and product managers to ensure product quality
   

Requirements

• 2-3 years of commercial experience in Manual QA
• Solid understanding of software testing fundamentals and QA processes
• Good knowledge of testing types, bug lifecycle, and test design techniques
• Practical experience with API testing (Postman, Swagger)
• Experience creating and maintaining test documentation
• Basic knowledge of SQL and ability to work with databases
• Experience with bug tracking systems such as Azure DevOps, Jira, or similar
• English - В2
• Strong analytical thinking and attention to detail
• Ability to work independently and communicate effectively within a team
   

Hiring Process

1. HR Interview
2. Test Task (~1.5 hours)
3. Technical Interview
    

What You Get

• Long-term product project
• Paid vacation and sick leave
• Paid lunches in the office 🍽️
• Transparent compensation
• Learning and professional development support
• Opportunity to work with and learn from experienced team members
• High-quality equipment
• Anniversary gifts 🎉
• Baby bonus

We’re looking for a QA Manual Engineer who knows how to dig deeper than the happy path, ask the right questions, and take real ownership of product quality.

If you have strong web testing experience and have worked hands-on with audio or call recording solutions, we’d love to hear from you.

Your role

You’ll be involved in the full QA cycle — from reviewing requirements and planning testing activities to validating features and supporting releases.

You will:

• Test web applications across functional and non-functional scenarios.
• Analyze requirements and identify inconsistencies or missing cases before development reaches production.
• Perform API testing using Postman and Swagger.
• Work with databases and run SQL queries when needed.
• Create and maintain test cases, checklists, and clear bug reports.
• Collaborate closely with developers and other team members.

• Take responsibility for product quality and release readiness.

   

What you bring

• 2+ years of commercial experience in Manual QA / web testing.
• Confident understanding of QA processes and the bug lifecycle.
• Hands-on experience with Postman and/or Swagger.
• Ability to write basic SQL queries.
• Experience with Azure DevOps or similar tools.
• Practical experience testing audio/call recording solutions is essential, particularly within telephony, VoIP, UCaaS/CCaaS, or other voice communication products.

• English at B2 level or higher.

   

A plus if you have

• Basic knowledge of HTML/CSS or Selenium.
• Experience with performance/load testing.
• Familiarity with Windows Server 2012.

• ISTQB certification.

   

Why join us?

We want you to have the flexibility and support you need to do your best work and continue growing professionally.

• Remote or hybrid work — choose what works best for you; our Lviv office is always available.
• Professional growth & mentorship — learn from experienced colleagues and develop your expertise.
• Regular performance reviews — transparent feedback and support for your development.
• 18 paid vacation days + 5 sick days per year.
• 10 additional days off annually.
• Accounting support — less paperwork for you.
• Free lunches when working from the office.

• Team events, gifts & anniversary surprises — because milestones are worth celebrating.

   

If quality is something you genuinely care about and voice/audio products are already familiar territory for you, we’d be happy to meet you.

Шукаємо .NET Engineer у продуктову команду, яка розробляє платформу для voice communications, call recording та conversation analytics.

Продукт працює з real-time voice communications, записом та обробкою дзвінків, а також інтеграціями з Microsoft Teams та іншими enterprise communication / contact center platforms.

Для цієї ролі шукаємо сильного C#/.NET Backend Engineer, який має комерційний досвід роботи з Microsoft Teams у контексті voice/telephony, calls або recordings.
 

Tech Stack

• C# / .NET 6+
• ASP.NET Core
• REST APIs
• MS SQL
• SignalR / WebSockets
• Microsoft Teams
• Twilio
• WebRTC
• Azure
• React.js / TypeScript
   

Responsibilities

• Design, develop and maintain backend services using C# / .NET
• Develop functionality related to voice communications and call recording
• Build and maintain integrations with Microsoft Teams and other communication/telephony platforms
• Work with call and recording data received from external communication platforms
• Work with end-to-end call flows, recording, storage, retrieval and processing
• Develop and maintain REST APIs and real-time communication functionality
• Work with communication technologies such as Microsoft Teams APIs, WebRTC, Twilio, SignalR/WebSockets and related solutions
• Investigate and troubleshoot issues related to calls, recordings, integrations and real-time communications
• Work with relational databases and optimize application performance
• Participate in architecture discussions, technical estimations and code reviews
• Write maintainable, testable and scalable code
• Collaborate with Product, QA and other Engineers throughout the development lifecycle
   

Requirements

• 3+ years of commercial software development experience
• Strong commercial experience with C# / .NET
• Good knowledge of ASP.NET Core
• Commercial experience with Microsoft Teams integrations related to calls, voice communications, meetings or recordings
• Experience working with telephony, voice communication, call recording, contact center or similar communication products
• Strong understanding of backend and client-server architecture
• Experience designing and integrating REST APIs / third-party APIs
• Experience with relational databases and SQL
• Good understanding of asynchronous programming and concurrent operations
• Experience with integration-heavy or real-time systems
• Understanding of software architecture principles, clean code and common design patterns
• Experience with Git and modern development workflows
• English - B2 or higher
   

Strong Plus

• Experience with Microsoft Teams recording/compliance recording APIs, Microsoft Graph, Teams Calling/Meeting APIs or related integrations
• Experience developing call recording or media processing solutions
• Commercial experience with VoIP, UCaaS/CCaaS or contact center products
• Understanding of SIP and RTP
• Experience with WebRTC
• Experience with Twilio, Zoom, Cisco Webex/CUCM, IPC, RingCentral, Avaya, 8x8, Genesys, Five9, Movius or similar platforms
• Experience with SignalR / WebSockets
• Understanding of real-time media streaming
• Experience troubleshooting voice/communication integrations
• Experience with Azure
• Experience with microservices or distributed systems
• Docker and CI/CD
• React.js / TypeScript
• Experience with transcription, speech-to-text, conversation analytics or AI/NLP functionality
   

What We Offer

• Long-term product project
• Transparent compensation
• Paid vacation and sick leave
• Learning and professional development support
• High-quality equipment
• Paid office lunches
• Anniversary gifts and baby bonus