Jobs C# / .NET

Blackthorn Vision is looking for a Middle/Middle Strong .NET Engineer. 

Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.

Please note: we’ll primarily consider candidates based in Lviv, as the project team is located there.

Requirements:

• 3+ years of commercial experience working on the backend as a .NET developer.
• Cloud systems development experience.
• Understanding of data access technologies, including Entity Framework and MongoDB.
• Experience with both SQL and NoSQL databases.
• Experience with microservice-oriented architecture, parallel, and asynchronous programming design patterns.
• Experience with Kubernetes, Docker, and RabbitMQ.
• Proven experience with Azure technologies: Azure Entra ID, Azure Storage accounts, Azure Service Bus, Azure Container Registry.
• Knowledge of design and architectural patterns.

• English level: Upper-Intermediate.

   

Responsibilities:

• Develop and maintain high-quality software solutions using .NET 8.0.
• Take full ownership of delivering new features to end users, including designing architecture, implementing, testing, and onboarding the customer support team with new functionality.
• Collaborate with product owners, the support team, and end users to understand project requirements and deliver solutions.
• Participate in code reviews to enhance overall code quality.
• Ensure applications are high-performing, responsive, and of excellent quality.
• Troubleshoot and resolve technical issues and defects promptly.
• Create code documentation, technical specifications, and architecture diagrams for new features.
• Follow agile methodologies and participate in regular sprint planning and review meetings.

You are compatible with us if you:

• Have a strong product mindset.
• Have a proactive approach to taking ownership of decisions/features.
• Possess a strong, curiosity-driven mindset.
• Are comfortable with challenges.
• Have the ability to collaborate and build relationships with diverse personalities.
• Demonstrate customer-focused decision-making.
• Exhibit clear and timely communication.
• Are open to giving and receiving constructive feedback.
• Value the quality of your code.
• Are able to solve the required technical tasks and communicate throughout the process (for example, asking clarifying questions promptly).

About Us

Bamboo Card is the Middle East’s leading Digital Prepaid Products Distributor and Rewards Fulfilment agency. Committed to trust, dependability, and excellence, we have been revolutionizing global loyalty programs since 2018. Our comprehensive portfolio includes eGift Cards, Prepaid Cards, and Top-Ups, delivering flexible solutions for diverse digital prepaid needs. Through strategic services such as a robust API and an advanced Client Portal, we simplify and enhance the seamless delivery of rewards at scale.

Role Overview

We are seeking an experienced Full Stack Developer to join our growing team at Bamboo Card. The ideal candidate will have strong hands-on experience in full stack development, primarily using .NET / C#, AWS cloud services, and ReactJS. You will be responsible for designing, developing, and maintaining scalable backend services as well as modern, responsive frontend applications.

This role requires a strong focus on performance, scalability, security, clean architecture, and code quality, while working closely with cross-functional teams to deliver high-quality software solutions.

Job Requirements

Technical Skills

• .NET / C# Development:
  Extensive experience in building robust, scalable applications using .NET and C#.
• Frontend Development (ReactJS):
  Strong experience in developing modern, responsive user interfaces using ReactJS, including state management, reusable components, and API integration.
• AWS Cloud Expertise:
  Solid hands-on experience with AWS services including (but not limited to):
  Lambda, S3, RDS, DynamoDB, SNS, SQS, SAM, and other relevant AWS services.
• API Development:
  Proven experience designing, building, and consuming RESTful APIs.
• Database Management:
  Proficient in SQL and NoSQL databases, with experience in data modeling, performance tuning, and optimization.
• CI/CD Pipelines:
  Experience implementing and maintaining CI/CD pipelines to enable automated, reliable deployments.
• Version Control:
  Proficient with Git and modern version control workflows.
• Architecture:
  Experience working with microservices and serverless architectures, designing scalable and maintainable systems.

Who we are and who we’re looking for:

Cleo is not a place for developers who want to hide behind tickets and meetings.

We've built and are now evolving a next-generation trading platform, engineered for thousands of concurrent traders, delivering transparency and features unmatched in the industry, challenging and slowly beating giant corporations 100x our size.
 

Our success is rooted in a developer-first environment, free from middle management and corporate red tape - just pure focus on building. Extraordinary teams are built by extraordinary people - if you’ve ever felt unable to reach your full potential, felt a lack of impact, or weren’t challenged enough in your previous jobs, Cleo is the place to change that. If you ever wondered how your favorite tech influencer built his skillset and knowledge - join our team and experience the journey yourself, but don’t expect it to be easy.

This is an AI-native engineering role: you’ll be expected to use AI tools heavily for coding, testing, research, refactoring, and workflow automation - while still owning the correctness of the output.

Ideal candidate must:

• Genuinely enjoy software development

• Understand system design and design patterns beyond textbook definitions

• Can debug hard problems without waiting for perfect instructions

• Can explain technical tradeoffs clearly even to non-technical people

• Keep up with new tools, frameworks, and AI workflows

• Be proactive and take ownership instead of waiting to be assigned every task

What can you expect?

• Taking ownership of important parts of the project

• Working remotely with flexible working hours

• No corporate management or unnecessary meetings, just pure software development

• You will not just be following tasks; you will be assessing what needs to be done by yourself

• Working with the latest modern frameworks, services, and AI tools

• An amazing team of smart people where your ideas will be heard

What will you actually do?

• Categorical examples of tasks you might get:

○ Designing & implementing distributed cache for microservices

○ Implementing resilient trading data WebSocket streams

○ Optimizing order matching systems

○ Refactoring public APIs and docs

○ Researching new AI tools for suitability in our workflows

○ Setting up automated parallel AI testing pipelines

• Exploring new frameworks, services, and AI tools, then deciding what is actually useful

• Using AI heavily, but not blindly - verifying outputs, building guardrails, and improving workflows

• Architecture and system design of small components up to big services

Our tech stack:

• .NET C#, React - TypeScript

• MongoDB, PostgreSQL, EF

• Microservices, RabbitMQ, SignalR, ELK stack

Our hiring process:

1. Screening: 15-40 min MS Teams call with our Dev Team Lead

2. Task: Take-home coding task (you can use AI)

3. Follow-up: Call with 1-2 devs about your task solution + follow-up questions

4. Final evaluation: Call with our CEO to discuss the role and expectations in detail

Remuneration depends on skill level, ownership, and the value you can create. For this role, we expect most candidates to land around 2k-3k $/month, with room to go higher for someone who can take serious ownership from day one. Across the company, our technical compensation range is roughly 1.5k-5k $/month, from junior to senior-level contributors. We don’t care much about years of experience on a resume; we care about what you can actually deliver. We know that a hardworking developer with one strong year can outperform someone with 10 years in the industry, which we reward accordingly.

We move quickly, but we also filter quickly. If you bluff, exaggerate your experience, ignore the job post, or try to cheat your way through the process, it will become obvious fast and will only waste your time and ours.

We’re looking for a skilled .NET C# Developer. 

If you’re passionate about building secure, scalable APIs, working with established systems while helping guide our shift toward the cloud, and are excited by the opportunity to explore machine learning integration—this is your chance to be part of something that truly matters. 

Requirements 

• 3+ years of professional experience in .NET C# development 
• Proficiency with Entity Framework (preferably EF Core) 
• Strong command of SQL, including complex query writing and optimization 
• Experience building RESTful APIs with ASP.NET or ASP.NET Core 
• Familiarity with version control systems, especially Git 
• Solid problem-solving and debugging skills 
• Ability to communicate effectively and work independently or as part of a team 

Nice-to-haves 

• Exposure to Azure services such as App Services, Azure SQL, and Azure Functions 
• Basic understanding of machine learning model integration via APIs or Azure ML 
• Familiarity with OData, microservices, and distributed systems concepts 
• Experience writing unit tests (e.g., xUnit, NUnit, MSTest) 
• Knowledge of CI/CD practices, especially using GitHub Actions 
• Interest or experience in DevOps practices and automation 

Core Responsibilities

• API Development: Design, build, and maintain RESTful APIs using .NET C#, focusing on performance, reliability, and security. 
• Entity Framework & SQL: Develop efficient data models using Entity Framework Core, and write optimized SQL queries for relational databases like SQL Server. 
• Cloud Transition Support: Contribute to new development efforts that utilize Azure services (e.g., Azure Functions, App Services, Azure SQL) as we begin migrating from on-prem infrastructure. 
• Machine Learning Integration: Collaborate with stakeholders to integrate machine learning models via RESTful APIs or Azure ML services. 
• Clean, Maintainable Code: Follow best practices to write testable, maintainable, and well-documented code. 
• Cross-Team Collaboration: Work closely with fellow developers and business partners to deliver secure, scalable solutions. 
• CI/CD Practices: Support continuous integration and delivery efforts using tools like GitHub Actions. 
• Problem Solving: Investigate and resolve performance issues, bugs, and bottlenecks in existing systems. 

About Us 
Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients around the world. 

Headquartered in Nashville, Tennessee, we have a global team of over 1,000 professionals and delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions across Fintech, Professional Services, Logistics, Healthcare, and Agriculture. 

Our operations are driven by a strong business vision, a people-first culture, and a commitment to responsible growth. We actively give back to the community through various CSR activities and adhere to international principles for sustainable development and business ethics. 

We’re looking for a skilled .NET C# Developer. 

If you’re passionate about building secure, scalable APIs, working with established systems while helping guide our shift toward the cloud, and are excited by the opportunity to explore machine learning integration—this is your chance to be part of something that truly matters. 

Core Responsibilities: 

• API Development: Design, build, and maintain RESTful APIs using .NET C#, focusing on performance, reliability, and security. 
• Entity Framework & SQL: Develop efficient data models using Entity Framework Core, and write optimized SQL queries for relational databases like SQL Server. 
• Cloud Transition Support: Contribute to new development efforts that utilize Azure services (e.g., Azure Functions, App Services, Azure SQL) as we begin migrating from on-prem infrastructure. 
• Machine Learning Integration: Collaborate with stakeholders to integrate machine learning models via RESTful APIs or Azure ML services. 
• Clean, Maintainable Code: Follow best practices to write testable, maintainable, and well-documented code. 
• Cross-Team Collaboration: Work closely with fellow developers and business partners to deliver secure, scalable solutions. 
• CI/CD Practices: Support continuous integration and delivery efforts using tools like GitHub Actions. 
• Problem Solving: Investigate and resolve performance issues, bugs, and bottlenecks in existing systems. 

Requirements 

• 3+ years of professional experience in .NET C# development 
• Proficiency with Entity Framework (preferably EF Core) 
• Strong command of SQL, including complex query writing and optimization 
• Experience building RESTful APIs with ASP.NET or ASP.NET Core 
• Familiarity with version control systems, especially Git 
• Solid problem-solving and debugging skills 
• Ability to communicate effectively and work independently or as part of a team 

Nice-to-haves 

• Exposure to Azure services such as App Services, Azure SQL, and Azure Functions 
• Basic understanding of machine learning model integration via APIs or Azure ML 
• Familiarity with OData, microservices, and distributed systems concepts 
• Experience writing unit tests (e.g., xUnit, NUnit, MSTest) 
• Knowledge of CI/CD practices, especially using GitHub Actions 
• Interest or experience in DevOps practices and automation