Jobs Web Apps

📢 Hiring: Web App Designer (with coding skills in css/html/c#)

Company: Kennel Connection

Salary: $2,000–$2,800 USD/month

Job Type: Full-time, Long-term

Location: Remote (Ukraine preferred)

Timezone: 4+ hours daily overlap with EST

English: B2 or better

Direct Hire – Product Company (NOT outsourcing)

About Us:

Kennel Connection is a US-based SaaS company serving pet care businesses. We are a product company, not an agency — we own and develop our software in-house and are building a long-term team.

Role Overview:

We are looking for a UI/UX Designer who can also implement their designs using HTML, CSS, and jQuery. This is a design-first role: your ability to create clean, user-friendly layouts is more important than your ability to write complex JavaScript. We work in a classic stack — no React, no Angular.

What You’ll Do:

• Design user interfaces and flows for our web-based product
• Create wireframes, mockups, and final UI assets
• Implement your designs directly in:
  • HTML / CSS / SCSS
  • jQuery
  • Razor (.NET view engine)
• Collaborate with product and engineering teams
• Gradually help modernize and improve the overall UX

What We’re Looking For:

• 3+ years of UI/UX design experience
• A portfolio showcasing web app design work
• Ability to implement layouts in HTML/CSS/jQuery
• Comfortable working in an older codebase (no React/Angular)
• Strong attention to UX detail and usability
• English level B2 or higher
• Looking for a stable, long-term role

We Offer:

• Long-term role in a growing SaaS company
• Full ownership of UI/UX across the product
• Friendly, collaborative team
• Salary growth based on impact
• Flexibility and stable working hours

🇺🇦 Ми дуже доброзичлива компанія до України.
🇺🇦 Підтримуємо талановитих українських розробників.

We are a U.S.-based fintech startup operating in the investment and financial services space. Our distributed teams work across Poland, the United States, and Ireland, collaborating on technology-driven solutions related to stocks and investments.

Security, compliance, and the responsible handling of sensitive financial data are central to how we operate, as we build scalable products in a regulated environment.

4-6 years of experience is ok

Responsibilities

— Modernize legacy systems( C#) via redesign and refactoring.

— Build APIs with proper security and lifecycle governance.

— Collaborate with UX, product, and architecture teams.

— Optimize backend performance.

— Support public API documentation and governance.

Skills

— Strong ( C#) Jbackend capability.

— Experience with modernization and migration projects.

— Understanding of microservice and API design.

— Familiarity with CI/CD, linting, testing frameworks.

— Knowledge of security and performance patterns.

— Good collaboration across UX and backend teams.

In addition to this, if you have commercial experience with Java backend or React frontend — it will be a strong plus.

Recruitment steps:

• HR interview (30-45 min)
• Tehnical interview with live coding (40-45 min)
• Final client interview (30-45 min)
• Backround check
• Job Offer

The assignment is for between 26 to 32 months. You will work in a team of 9 engineers. The assignment is to migrate from monolith to microservices.

Important: the candidate must have worked/lived in Poland for the last 2+ years

Please read before applying:

The client is building a product in the bank/investment/brokerage systems niche, and their investors have strict security and compliance requirements, where every person will go through a background check.

What does this mean?

Before making an offer, they will check whether you have violated any EU laws.

For background check — you must be a taxpayer in Poland for 2+ years.

We build a modern fintech platform integrating with international payment providers.

The system processes real financial transactions and includes:

.NET 10 backend services

ASP.NET Core APIs

Real-time updates via SignalR

MS SQL data layer

Razor / Blazor UI

Vue.js components

Azure-based infrastructure

We continuously upgrade the stack and avoid legacy technologies.

What you will do

Develop backend services using C# and .NET 10

Design and implement REST integrations with payment providers

Handle webhooks, callbacks, and signature validation

Implement retry, idempotency, and error-handling strategies

Work with MS SQL (query optimization, indexing)

Develop UI using Razor / Blazor and Vue.js

Implement real-time features with SignalR

Contribute to architectural and performance improvements

Requirements

Must have

Strong C# knowledge

Experience with modern .NET (Core / 6+; .NET 8+ preferred)

Solid REST API design experience

Experience with MS SQL

Experience with Razor or Blazor

Experience with Vue.js

Understanding of authentication (JWT, OAuth) and API security

English — Intermediate+

Nice to have

Experience with .NET 9/10

Azure experience

Docker

Experience with fintech or payment integrations

Experience with distributed systems