Jobs C# / .NET

About us:

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 200 customers worldwide.

But that's not all! We're not just about numbers, we're about people. With a team of over 1000 passionate individuals spread across twelve countries in Europe, Asia, and the US, we're all united by our love for innovation and teamwork.

EveryMatrix is a member of the World Lottery Association (WLA) and European Lotteries Association. In September 2023 it became the first iGaming supplier to receive WLA Safer Gambling Certification. EveryMatrix is proud of its commitment to safer gambling and player protection whilst producing market leading gaming solutions.

Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time.

We are looking for a passionate and dedicated Senior .Net Developer to join our team in Lviv!
 

What You'll get to do:

• Hands-on development and integration of the evolving business functionality on the core part of the platform with other office locations.
• Understanding business requirements and their mapping to the given software framework.
• Discussing business requirements along with the Team Leader, Business Analysts, Project Managers, and other parties involved.
• Adhering to the Agile methodology and design principles of the project.
• Working in a test-driven, object-oriented environment.
• Participating in the design and implementation of the new architecture of the next-generation GamMatrix platform.
• Offering the QA and support team assistance whenever issues arise.
• Adhere to best practice development standards (such as continuous integration and deployment).
• Ability to understand the complex technical architecture.
• Ability to manage multiple priorities, commitments and tasks.

What You need to know:

• Experience with ASP.NET 4+ Frameworks and .Net Core 3.1+.
• Good understanding and experience with relational database systems (MSSQL Server, PostgreSQL) GIT, CI/CD practices.
• Strong knowledge of OOP, SOLID principles, and design patterns.
• Experience with multi-thread programming.
• Experience using containerization technologies (Docker) and orchestration technologies (Kubernetes).
• Experience implementing and using message queues (Kafka, Rabbit MQ).
• Hands-on experience writing unit tests.
• Experience with distributed caching solutions (Redis).
• Knowledge of n-tier applications, distributed applications.
• English proficiency.

Nice to have:

• Strong knowledge of C#.
• Experience with building and managing microservices, parallel and asynchronous programming design patterns.
• Experience building REST APIs and self-description services (ex: Swagger).
• Experience with Log Systems: Grafana, Kibana.
• Experience with modern software development life-cycle.
• Development experience with web services.
• Self-motivated and result-oriented.
• Excellent communication skills (oral and written).
• Analytical mindset.
  
  Here's what we offer:
• Start with 22 days of annual leave, with 2 additional days added each year, up to 32 days by your fifth year with us.
• 3 sick leave days per year, no doctor's note required; 30 medical leave days with medical allowance
• Hybrid work schedule is available after the first three months of employment, with up to 50 days of work from home per year.
• Benefit from two Free Fridays each year, limited to one per quarter.
• Daily catered lunch or monthly lunch allowance. 
• Private Medical Subscription. 
• Access online learning platforms like Udemy for Business, LinkedIn Learning or O’Reilly, and a budget for external training.
• Gym allowance.
• Corporate English lessons.
• Support for New Parents:
• 21 weeks of paid maternity leave, with the flexibility to work from home full-time until your child turns 1 year old.
• 4 weeks of paternity leave, plus the flexibility to work from home full-time until your child is 13 weeks old.

Our office perks include on-site massages and frequent team-building activities in various locations.

At EveryMatrix, we're committed to creating a supportive and inclusive workplace where you can thrive both personally and professionally. Come join us and experience the difference! 
 

Hi there! AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.

Why join us
If you’re looking for a place to grow, make an impact, and work with people who care, we’d love to meet you! :)

About the role
We are looking for a Senior .NET Engineer to design and implement integrations, customizations, and automation within a modern product information ecosystem. In this role, you’ll build and enhance extensions using C# and .NET technologies while supporting system workflows and scalable data models. You’ll collaborate with cross-functional teams to deliver reliable integration solutions, troubleshoot complex issues, and improve platform capabilities in a dynamic environment.

What you will do
● Create integrations, customization, and automation;
● Design technical specifications;
● Develop and enhance custom extensions to support integrations and system workflow requirements;
● Diagnose, debug, and fix technical issues reported from the existing implementation;
● Understand, document, and elaborate on technical and non-technical requirements for system integrations and customization;
● Recommend incremental updates to the data model, accommodating additional data attributes and entities;
● Work with the technical team in implementing changes to the data model, integration, and customization.

Must haves
● Bachelor’s degree in Computer Science, Engineering, or related field;
● 5+ years of experience in software development using C#.NET;
● Strong knowledge of .NET C# MVC and .NET Core;
● 2–3 years of experience with system integrations (upstream and downstream);
● Experience building integrations using JSON and REST APIs;
● Experience with InRiver Product Information Management (PIM);
● Experience working with .NET remoting;
● Exposure to APIs and data exchange formats;
● Upper-intermediate English level.

Nice to haves
● InRiver PIM developer certification;
● Working knowledge of Visual Studio .NET and Azure DevOps or GitHub;
● Knowledge of remoting in .NET Core;
● Strong understanding of object-oriented programming concepts;
● Experience working with relational data models and data structures;
● Experience working with 3rd party APIs and SDKs;
● Experience writing and interacting with SOAP and REST web services;
● Experience using Git.

Perks and benefits
● Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps
● Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities
● A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands
● Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office — whatever makes you the happiest and most productive.

Meet Our Recruitment Process
Asynchronous stage — An automated, self-paced track that helps us move faster and give you quicker feedback:
● Short online form to confirm basic requirements
● 30–60 minute skills assessment
● 5-minute introduction video

Synchronous stage — Live interviews
● Technical interview with our engineering team (scheduled at your convenience)
● Final interview with your future teammates

If it’s a match—you’ll get an offer!

PLEASE NOTE that we are searching for candidates who are located in Lviv and are able to visit office in Lviv.

About us:

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 200 customers worldwide.

But that's not all! We're not just about numbers, we're about people. With a team of over 1000 passionate individuals spread across twelve countries in Europe, Asia, and the US, we're all united by our love for innovation and teamwork.

EveryMatrix is a member of the World Lottery Association (WLA) and European Lotteries Association. In September 2023 it became the first iGaming supplier to receive WLA Safer Gambling Certification. EveryMatrix is proud of its commitment to safer gambling and player protection whilst producing market leading gaming solutions.

Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time.
 

We are looking for a passionate and dedicated Junior .NET Developer to join our team in Lviv!

What You'll get to do:

• Hands-on development and integration of the evolving business functionality on the core part of the platform with other office locations.
• Understanding business requirements and their mapping to the given software framework.
• Discussing business requirements along with the Team Leader, Business Analysts, Project Managers, and other parties involved.
• Adhering to the Agile methodology and design principles of the project.
• Working in a test-driven, object-oriented environment.
• Participating in the design and implementation of the new architecture of our next-generation platform.
• Offering the QA and support team assistance whenever issues arise.
• Adhere to best practice development standards (such as continuous integration and deployment).
• Ability to understand the complex technical architecture.
• Ability to manage multiple priorities, commitments and tasks.

What You need to know:

• Knowledge of C#, NET Framework 4.8 or .NET 5+, OOP and OOD concepts;
• Understanding of service-oriented architecture;
• Web development understanding: ASP.NET Core, ASP.NET Web API;
• Knowledge of SQL syntax;
• Intermediate or upper English level.

Nice to have:

• Technical education is a plus but not required;
• Experience with ADO.NET or any ORM like Dapper or Entity Framework;
• Experience with LINQ;
• Experience with MySQL and/or PostgreSQL;
• Experience with Docker;
• Experience with version control system;
• Knowledge of CI/CD practices.

Here's what we offer:

• Start with 22 days of annual leave, with 2 additional days added each year, up to 32 days by your fifth year with us.
• 3 sick leave days per year, no doctor's note required; 30 medical leave days with medical allowance
• Hybrid work schedule is available after the first three months of employment, with up to 50 days of work from home per year.
• Benefit from two Free Fridays each year, limited to one per quarter.
• Daily catered lunch or monthly lunch allowance. 
• Private Medical Subscription. 
• Access online learning platforms like Udemy for Business, LinkedIn Learning or O’Reilly, and a budget for external training.
• Gym allowance.
• Corporate English lessons.
• Support for New Parents:
• 21 weeks of paid maternity leave, with the flexibility to work from home full-time until your child turns 1 year old.
• 4 weeks of paternity leave, plus the flexibility to work from home full-time until your child is 13 weeks old.

Our office perks include on-site massages and frequent team-building activities in various locations.

At EveryMatrix, we're committed to creating a supportive and inclusive workplace where you can thrive both personally and professionally. Come join us and experience the difference!

Intetics Inc., a global technology company providing custom software application development, distributed professional teams, software product quality assessment, and “all-things-digital” solutions, is looking for a Software Engineer to join our dynamic team.

Engagement: short-term
Workload: 50–100 hours per month

Responsibilities

• Integration of PLM/PDM systems

• Development of plugins for CAD systems

   

Technical Requirements

• Hands-on experience with Siemens NX, SolidWorks, CATIA, and other CAD/CAM/CAE systems (plugin development)
• Strong/expert-level experience with Siemens Teamcenter, SolidWorks PDM/PLM, and similar systems

• Proficiency in .NET / C#

   

Specific Requirements

• Expert-level knowledge of Siemens Teamcenter and other PDM/PLM systems

About the Role

RadiantRFID is looking for an experienced Software Engineer to be part of our agile and growing software development team. As part of a small team, you will have an immediate and measurable impact on our fast-growing business by helping us reach the next level and stage of growth. We work hard, but we have lots of fun doing it. If a cool, collaborative, and challenging work environment sounds appealing, you’ll fit right in.

What You'll Do

The software engineer will be responsible for

• Developing technical solutions to satisfy business needs,
• Implementing solutions in a timely manner,
• Collaborating with and helping other developers,

Basic Qualifications

Strong experience and knowledge in

• 5+ years of professional experience developing production systems
• 3+ years Experience with C#/ .NET.
• Experience with ASP.NET WebForms and MVC.
• Experience with HTML, JavaScript, CSS.
• Experience with front-end web application frameworks (React).
• Experience with building and consuming web services (WCF, ASP.NET Web API, SOAP, REST).
• Experience with SQL and/or NoSQL databases (MS SQL Server).
• Experience with unit testing and test-driven development.
• Experience with version control and issue tracking systems (Git, JIRA).
• Knowledge of object oriented design principles, design patterns and architecture principles.

Preferred Qualifications

• Experience with cloud computing services (Amazon Web Services)
• Experience with Angular JS
• Experience in driving systemic operational improvements
• Experience working with cross-functional teams 
• Experience in delivering complex software features
• IT relevant education
• Excellent written and oral communication skills, analytical skills, attention to detail and curiosity.
• Open minded, easy to communicate with, team player, able to learn quickly, able to work both independently and as a member of a team

Why Work at Radiant?

We are a US based company that works with RFID solutions using RFID, BLE, GPS and barcode technologies to implement cutting-edge solutions that automate asset accountability in a wide variety of situations.

We deliver solutions and services that enable our customers to keep track of their most valuable and dynamic assets. For enterprise organizations, they are often complex technology systems ranging from data centers to industrial equipment.

We are an Enterprise Solutions and Services company that provides a cloud-based (or on-premise) Solution as a Service (SolaaS) platform for the management, tracking and analysis of large numbers of highly-mobile and high value production assets, non-production assets and work-in-process tracking. Our solutions save a typical industrial customer tens of millions (or more) annually due to production downtime, productivity loss and fines due to inventory audit failures. In addition, data is collected and tracked and is available for operational and financial analysis to improve operational processes, workflow and increase efficiencies.

See more details at www.radiantrfid.com

We are an IT services company based out of San Francisco, USA. ​​We build and acquire expert engineering teams to help our clients meet their business needs and solve their operational challenges.

We are looking for a Senior Software Engineer for long-term contract work to join one of our client’s Development Product Teams. You will join a Web Development and API Team responsible for integrations with company internal systems like Sharepoint, Salesforce, Zendesk, and others.

This position may require working between the hours 12:00 PM to 8:00 PM Kyiv time. 

Responsibilities:

• Design, implement and maintain backend services and APIs using .NET (C#) and microservices patterns.
• Develop responsive frontend applications using React; maintain component library with Storybook and integrate with CMS.
• Design and optimize relational database schemas and queries (e.g., SQL Server, PostgreSQL).
• Build, maintain and improve CI/CD pipelines and infrastructure in Azure (Azure DevOps / GitHub Actions, Terraform, etc.).
• Manage environments (stage/prod), release processes, runtime support, monitoring, logging, security and incident response.
• Design and implement API integrations with third-party services (REST, SOAP, GraphQL), ensuring security, reliability and versioning.
• Use AI-assisted coding tools (required — experience with Claude Code or another code-generation AI) to accelerate development, refactoring and reviews.
• Perform code reviews, and contribute to architectural decisions.

Requirements:

• 8+ years of professional experience in web application development; proven senior-level capability.
• Strong proficiency in .NET (C#) for building APIs and services.
• Solid experience in React, including hooks and modern state management patterns.
• Practical experience with Azure services (App Services, AKS, Functions, Storage, Key Vault, etc.) and CI/CD.
• Hands-on DevOps experience: automation, containerization (Docker), orchestration.
• Experience managing runtime environments and ensuring availability, scalability, observability, alerting, and recovery.
• Strong knowledge of relational databases and query/schema optimization.
• Experience with Storybook and CMS-driven component/content workflows.
• Demonstrated experience designing and implementing robust API integrations (REST, SOAP, GraphQL).
• Using AI coding tools (Claude Code or similar) as part of the workflow
• English proficiency required for clear and quality written and verbal communication

Would be a plus:

• Node.js development experience.
• Salesforce integration experience.

About Us:

Entravel is a member’s club for discounted luxury travel and white-label hotel platform provider focusing on the crypto industry, backed by VCs and prominent European founders. Our hotel product is incredibly strong; we offer more than one million properties, and our rates are amongst the lowest in the world. In fact, on most 5* hotels you won’t find a platform with lower rates than Entravel.

What We’re Looking For:

We are actively seeking a talented and experienced Senior Backend Developer specializing in C# to join our dynamic team. As a key member of our development team, you will help architect and implement robust backend solutions that power our innovative hotel booking platform.

Core Skills:

• 5+ years of professional experience with C# and .NET Core (3.1–8).
• Strong understanding of asynchronous programming, LINQ, and dependency injection.

• Proven experience building scalable, distributed systems and microservices.

   

Databases:

• Proficiency with PostgreSQL (schema design, query optimization, migrations).
• Experience with MongoDB for document-oriented data models.
• Working knowledge of Redis for caching and distributed state management.

Messaging & Event Streaming:

• Hands-on experience with RabbitMQ for message queuing.
• Familiarity with Kafka for event-driven architectures and streaming data pipelines.

Monitoring & Observability:

• Experience integrating and using Kibana, Prometheus, and Grafana for logging, metrics, and alerting.

DevOps & Cloud:

• Strong understanding of Docker containerization and image optimization.
• Practical experience deploying and managing services on Google Cloud Platform (GCP) (e.g., GKE, Cloud Run, Pub/Sub, Cloud SQL).

General Engineering Practices:

• Deep knowledge of RESTful APIs and gRPC service design.
• Solid grasp of CI/CD pipelines and Git-based workflows.
• Commitment to clean architecture, unit testing, and code quality.
• Ability to mentor engineers and contribute to architectural decisions.

Soft Skills:

• Excellent problem-solving and analytical thinking abilities.
• Strong communication skills, able to collaborate effectively across teams in both English and Ukrainian.
• High sense of ownership, accountability, and responsibility for deliverables and system reliability.

Nice to Have:

• Experience with IaC tools (Terraform, Pulumi).
• Knowledge of performance profiling and application security best practices.
• Familiarity with domain-driven design (DDD) and event sourcing.

We offer:

• Flexible Start: Set your own comfortable working hours that accommodate your individual needs.
• Competitive Salary: High standards of remuneration reflecting your contribution and skills.
• Vacation: Enjoy 22 days of vacation for full rejuvenation and life enjoyment.
• Sick Leave: Ensure your health with 15 days of sick leave per year.
• Special Leave Cases: Support for significant life events such as weddings, childbirth, or the loss of a close family member.

We are looking for a .NET Developer to help design and build high-performance backend services for a real-time trading platform. You will work closely with product owners, business analysts, and cross-functional teams (Mobile, Web, QA) to translate business requirements into scalable backend architecture. The role requires strong experience in real-time data processing, distributed systems, and financial platforms.

Details: 

Schedule: Remote

Employment: Full-time
Industry: Crypto / Trading

English: Fluent 

Start: ASAP

What You’ll Do

Collaborate with product owners, business analysts, and cross-functional teams to define backend architecture

Design and develop high-performance, scalable backend services in C#/.NET

Build and maintain RESTful APIs

Implement real-time streaming solutions using SignalR and WebSockets (server and client side)

Integrate with relational (MS SQL Server) and NoSQL (Redis) databases

Work with message brokers (Azure Service Bus, Redis Streams) for reliable asynchronous communication

Write automated unit and integration tests

Contribute to CI/CD pipelines for continuous delivery

Ensure secure coding practices and compliance with OWASP standards

Support development, deployment, and monitoring of Azure-based applications

What We’re Looking For

7+ years of backend development experience with C#/.NET

Strong knowledge of .NET ecosystem and Entity Framework Core

Experience building RESTful APIs

Solid experience with MS SQL Server and Redis

Hands-on experience with SignalR and WebSockets for real-time streaming

Experience with Azure Service Bus and async communication patterns

Experience developing and deploying Azure-based applications

Strong understanding of secure coding practices (OWASP)

Test-driven development mindset (xUnit or similar frameworks)

Deep understanding of trading or financial systems, including real-time processing and distributed architectures

Strong communication skills and ability to work cross-functionally

Nice to Have

Experience building US-regulated fintech or trading platforms (SEC/CFTC exposure)

Familiarity with KYC/AML compliance

Experience with Grafana, Angular, Azure DevOps

Experience with modern CI/CD pipelines

Exposure to AI/ML tools to enhance development workflows

Agile mindset and startup experience

The role

We’re taking over core development of a large, real-time public safety / mobility platform. It’s a hybrid system: you’ll work in a mix of legacy and modern code while we move the center of gravity toward .NET 8 and a clean CI/CD delivery model.

We’re also transitioning to a CIS-based team, and the truth is: the documentation isn’t perfect everywhere. You don’t need everything spelled out if you know how to read a system, ask smart questions, and improve things as you go.

If you like big systems, real production constraints, and modernization work that actually matters—this will feel interesting.

What you’ll do

• Build backend services in C# / .NET 8 (LTS).
  
   
• Maintain/refactor legacy areas (ASP.NET 4.8 / WCF) safely as we modernize.
  
   
• Build front-end features in React and/or Angular (TypeScript) for operational dashboards.
  
   
• Write and optimize queries across SQL Server and MySQL.
  
   
• Work in a strict SDLC:
  
   
  • PR-based workflow
    
     
  • branch protection (no pushing to main)
    
     
  • peer reviews
    
     
  • mandatory SAST scans before release
    
     
• Help move releases from “manual steps” toward CI/CD with logging, traceability, and rollback.
  
   
• Integrate with adjacent services (some Python) and mobile clients.
  
   

What we’re looking for

• 5+ years in production software engineering (enterprise or high-availability systems).
  
   
• Strong C# / .NET skills; comfortable touching ASP.NET 4.8 while writing most new work in .NET 8.
  
   
• Solid experience with React and/or Angular.
  
   
• Strong relational DB fundamentals (SQL Server, MySQL).
  
   
• You can handle imperfect docs and still deliver: you investigate, validate, and improve the system.
  
   

Nice to have

• Python integration work, mobile-facing APIs, or experience with real-time dashboards.
  
   
• Observability/performance tuning experience.
  
   
• Prior modernization experience (monolith → services, legacy cleanup, etc.).
  
   

A quick honesty section

• You’ll see messy parts. We’re not hiding that.
  
   
• You’ll also be part of the team that fixes them—steadily and safely.
  
   

Apply with: 2–3 bullets on systems you’ve worked on (scale, tech stack, what you shipped).

🚀 We’re Hiring: Backend .NET Developer (Middle Level)

We are pleased to represent a leading European provider of secure IoT connectivity and end-to-end solutions, currently seeking a skilled Backend .NET Developer to join their dynamic team in Lviv.

🏢 About the Company

Our client empowers organizations to optimize operations, enhance business value, and safeguard critical functions through innovative IoT technology.
Their secure IoT solutions are trusted across diverse sectors — including smart buildings, alarms, transportation and logistics, personal safety, healthcare, construction, public services, education, rescue operations, and energy infrastructure.

💻 Role Overview

This is a full-time hybrid role based in Lviv, with flexibility to work remotely on occasion.
As a Backend .NET Developer, you must have:

• · At least 1.5 years of manual QA experience
• · Strong background in testing web and mobile applications
• · Hands-on experience testing REST APIs and other web services
• · Basic SQL knowledge for data validation
• · Confident use of browser developer tools (inspect element, network tab, console)
• · Knowledge of performance and security testing practices
• · Experience working with bug tracking tools and defect management
• · Strong ability to create clear, structured, and comprehensive test documentation
• · Practical experience working within Agile and Scrum frameworks
• · Ability to self-manage workload and tasks efficiently

• · Level of English: Intermediate Strong or higher

  What You’ll Do:

• · Actively contribute throughout the software development lifecycle, collaborating with cross-functional teams to ensure quality at every stage
• · Write, review, and maintain well-structured QA documentation
• · Perform different testing types to validate functionality and uncover edge cases
• · Using tools for database and API testing
• · Identify, document, and prioritize reproducible defects with clear and actionable descriptions
• · Involvement in early testing phases of the development process

If you are passionate about cutting-edge technologies and want to contribute to impactful IoT solutions, we’d love to hear from you!

Description

Our client is an innovative medical device manufacturer in the United States that develops devices and software applications.

At this project, you will have a great opportunity to be involved into the full development life cycle of medical software, which is intended to help individuals by processing certain information taken from medical devices to identify health trends and to track daily activities. Additionally, there are opportunities to work with medical devices in the scope of end-to-end testing.

Requirements

Must Haves:

• Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field
• 3+ years of work experience
• Minimum 2+ years with a security-focused role or equivalent hands-on experience implementing secure systems.
• Strong programming skills in C# or a similar modern object-oriented programming language.
• Experience with low-level embedded serial communication protocols such as UART, and USB. 
• Proficiency in C# and good coding style, with good commenting habits
• Experience in developing dynamic-link libraries (DLL) to create APIs
• Experience developing software to interface with devices and test equipment, over TCP/IP, USB, or serial communication
• Comfortable comprehending code in various languages, including C and Python
• Familiarity with version control systems (Git), and release methodologies
• Disciplined and detail-oriented; consistently delivers robust, readable code
• Excellent proactive communication skills, both verbal and written, including through collaboration
• tools (e.g., Jira, Confluence, Teams)
• Excellent analytical, independent problem-solving skills, and ownership of deliverables

Nice to have:

• Some exposure to using web APIs over REST is a plus
• Familiarity with software QA processes in regulated environments (e.g., medical device, FAA, SEC, DoD, Title 21 CFR Part 11) is preferred.
• Understanding of microprocessor features such as digital I/O, timers, ADCs, UARTs, low power
• modes, etc.
• Comfortable reading hardware data sheets
• Experience developing drivers to control lab equipment such as oscilloscopes, multimeters, and power supplies

Job responsibilities

• Design and develop secure, high-quality C# software for manufacturing tools and fixtures used in the production of our Cardiac monitoring devices.
• Collaborate with the software team on the design, implementation, and documentation of secure software systems that support manufacturing and production processes for medical devices.
• Define and enforce cybersecurity best practices throughout the manufacturing software development lifecycle (SDLC), including code reviews, and vulnerability assessments.
• Familiarity with NIST SP 800-series security controls for software design, including the implementation of Multi-Factor Authentication (MFA), identity management, and cryptographic best practices.
• Collaborate with manufacturing engineering, IT/OT teams, quality, and regulatory functions to ensure that production software systems meet both operational and security requirements.
• Develop and maintain secure interfaces between manufacturing equipment and other enterprise systems.
• Support compliance with medical device and cybersecurity standards, including FDA Premarket Cybersecurity Guidance, ISO/IEC 81001-5-1, IEC 62304, ISO 13485, and ISO/IEC 27001.
• Support verification and validation activities, including documentation aligned with medical device regulatory frameworks

We are looking for an enthusiastic and proactive Intern .NET + Angular Developer to join our dynamic team!

Requirements:
— Solid understanding of object-oriented programming (OOP);
— Good knowledge of C#, .Net Standard, .NET 6+, ASP Web API;
— Basic knowledge of Unit testing;
— Basic knowledge of MSSQL;
— Knowledge of Angular(React) + TypeScript;
— Upper-Intermediate English level (both written and spoken);
— Proficiency with Source Control tools such as Git.

Would be a plus:
— Basic understanding of GoF Design Patterns;
— Understanding of microservice architecture;
— Containerization (basics of Docker/Kubernetes) + Azure;
— Attention to details;
— Practice experience in pet projects.

Responsibilities:
— Develop project functionalities;
— Manage databases with MS SQL;
— Implement frontend features with Angular.

We offer:
— 3-month Internship schedule: Monday to Friday, 10.00-19.00;
— Office-based/remote work;
— No time trackers or other bureaucratic measures;
— Practical experience on internal projects;
— Networking with experienced professionals willing to share their knowledge and experience;
— Opportunity to obtain a contract with HYS Enterprise as a Junior specialist;
— Gifts for birthdays and professional holidays;
— Participation in internal and external events.
Upon successful completion of the internship and mutual agreement to proceed with a contract, the candidate is expected to commit to working with us for a minimum of one year.

We're seeking a talented .NET Developer to help shape the future of blockchain technology in innovative startup. If you're ready to make a real impact in a cutting-edge industry, we'd love to hear from you!
 

Core Competence:
 

• At least 2 years of professional experience in software development with a strong foundation in C#, ASP.NET Core, and Entity Framework.
• Proficiency in managing IIS, MS SQL, Visual Studio, and Docker environments.
• Familiarity with ODBC, LINQ, NUnit, xUnit, NuGet, and RESTful APIs, alongside Git for version control.
• Sound understanding of client-side and server-side architectures.
• Strong analytical thinking, with a structured, math or engineering-oriented mindset and a focus on delivering results.
   

Preferred Qualifications:
 

• Knowledge of ReSharper, experience with Azure, and familiarity with NoSQL databases.
• Experience with AWS and Linux system administration is an asset.
• Active participation in hackathons demonstrates innovative thinking and problem-solving skills.
• Upper-intermediate level of English for clear and effective communication in a global team.
   

What We Offer You:
 

• Competitive Compensation: Your skills and experience will be rewarded with a salary aligned with industry standards and your career ambitions.
• Innovative Work Environment: Be part of a forward-thinking FinTech startup with a culture of continuous learning, including tech talks and participation in hackathons.

• 20 paid vacation days, 3 paid sick days, and a flexible schedule for work-life balance.

   

About the Project

Development and maintenance of a one-way integration service from 1C 8.3 (accounting system) to EspoCRM. The service is built on .NET 10 and performs unidirectional data synchronization — reading data from 1C via OData API and pushing it to EspoCRM via REST API, using RabbitMQ as the message broker.

Responsibilities

• Maintain and develop the existing integration service
• Develop new entity mappers and handlers from 1C to EspoCRM
• Configure and monitor RabbitMQ message queues
• Work with OData API to retrieve data from 1C
• Debug and fix data synchronization issues
• Participate in code reviews and code documentation

Required Skills

Must Have

• C# / .NET 10 — core language, async/await, generics, records
• RabbitMQ — message queues, consuming events from 1C
• MediatR — CQRS pattern, commands, queries, pipeline behaviors
• EspoCRM REST API — creating and updating entities via HTTP, token-based auth
• System.Text.Json — data serialization/deserialization

Nice to Have

• Swagger / OpenAPI — API endpoint documentation
• Cronos — scheduled task execution via cron expressions
• Docker — service containerization for deployment
• Git — version control

Big Plus

• Experience working with 1C 8.3 at a data structure level
• Familiarity with EspoCRM as a product
• Experience with .NET assembly decompilation tools (dotPeek, ILSpy)
• Understanding of Mapper, Repository, and CQRS design patterns

Full-time schedule: Monday–Friday, 09:30–18:00 (remote work available)

Comfortable office in Kyiv (Okhtyrska St., 6a)

Screening requirements (please read first):

• Non-negotiable: hands-on experience building or supporting production back-end systems for process mining or task mining and ML/AI-driven workflow analysis (pipelines, workflow reconstruction, model-serving integration, evaluation/monitoring, scalable APIs).
• Required: a 2–5 minute intro video link in your resume or via the platform (smartphone recording is fine). Applications without the video may not be reviewed.

Company overview:
 

Graphio.ai stops revenue loss before it happens by detecting broken handoffs between teams.
 

We analyze API-enabled metadata from your existing systems to automatically identify when Sales, Customer Success, Legal, Finance, Product, and Operations are misaligned - before deals stall, renewals fail, or contracts slip.
 

No workflow changes. Fast rollout in less than 2 days.

AI learns what successful execution looks like in your company and alerts you to dangerous deviations in real time.

We’ve built and scaled before: the team behind Graphio.ai previously built upSWOT, a B2B platform adopted by hundreds of financial institutions, which was later acquired by Uptiq.  We’re applying those lessons in execution, delivery, and scale to Graphio.ai.

Supported by senior leaders from Experian, Mastercard, Lattice, BambooHR, Altrata, SAP, JackHenry, FIS, Pfizer, Workday, Customertimes, and more (graphio.ai/investors).

Position Overview:

We are looking for a Senior AI Backend Engineer to design, build, and scale the core systems behind Graphio.ai’s workflow intelligence platform.

Graphio.ai connects to customer systems, ingests large volumes of event-based metadata, reconstructs real business workflows, and applies machine learning to discover ideal process paths (golden paths), detect anomalies, and surface insights.

This is a hands-on senior role for someone who is equally strong in:

• backend & distributed systems
• data-intensive architectures
• applied machine learning
• experimentation & research
• production-grade reliability

Our core stack: Python, C# (.NET Core / ASP.NET Core), MongoDB, ClickHouse, RabbitMQ.

We are looking for an engineer who deeply understands system architecture, can reason about data at scale, and is comfortable building, training, experimenting with, and deploying ML models into production.

What You Will Do:

Backend & Systems

• Design and build backend services and APIs using Python and C# (.NET Core / ASP.NET Core).
• Architect scalable, fault-tolerant, and observable systems for data ingestion, processing, and analytics.
• Build event-driven and asynchronous pipelines using RabbitMQ.
• Design data models and storage strategies using MongoDB and ClickHouse.
• Own system performance, reliability, and scalability.
• Implement strong observability: logging, metrics, tracing, alerting.
• Troubleshoot production issues, perform root cause analysis, and implement long-term fixes.

Data & Machine Learning

• Design and implement end-to-end ML pipelines: ingestion → feature engineering → training → evaluation → deployment.
• Train and iterate on ML models for workflow discovery, anomaly detection, and pattern recognition.
• Perform feature engineering on large-scale event and metadata streams.
• Run experiments, test hypotheses, and evaluate models using offline and online metrics.
• Conduct applied research: explore new modeling approaches, algorithms, and representations.
• Build batch and near-real-time inference pipelines.
• Monitor model performance, drift, and degradation in production.
• Implement retraining strategies and versioning.

Architecture & Product Thinking

• Define service boundaries, data contracts, schemas, and interfaces.
• Design for multi-tenancy, security, and compliance.
• Make pragmatic architectural decisions balancing speed, quality, and scale.
• Work closely with Product, ML, and Engineering to ship in small, measurable increments.
• Influence the technical direction of the platform.

Required Qualifications:

• 6+ years of experience in backend or systems engineering.
• Strong experience with Python and C# (.NET Core / ASP.NET Core).
• Experience building data-intensive systems (event ingestion, pipelines, analytics).
• Hands-on experience with machine learning:
  • training models
  • feature engineering
  • experimentation
  • evaluation
• Strong understanding of production ML systems (not just notebooks).
• Experience with MongoDB, ClickHouse, or similar databases.
• Experience with message brokers (RabbitMQ or similar).
• Strong understanding of distributed systems concepts:
  • idempotency
  • retries
  • backpressure
  • eventual consistency
  • failure modes
• Strong analytical and problem-solving skills.
• High ownership mindset.

Nice to Have:

• Experience with workflow analytics, process mining, or event-based systems.
• Experience with time-series or behavioral modeling.
• Experience with large-scale experimentation platforms.
• Familiarity with MLOps practices.
• Experience with cost optimization for data & ML workloads.
• Experience with Kubernetes and cloud infrastructure.

Why This Role Is Special:

This is not a typical backend role.
This is not a typical ML role.

You will be building a real AI system, not demos:

• messy real-world data
• real customers
• real scale
• real constraints
• real impact

If you like working at the intersection of systems, data, and intelligence, this role is for you.

What we offer:

• A senior role owning core backend systems behind an AI/ML product with clear, measurable customer impact.
• Direct collaboration with Machine Learning Engineers to bring models into production with reliability and speed.
• Real-world data engineering problems: metadata ingestion, workflow reconstruction, and scalable reporting/alerting.
• Fast iteration, low bureaucracy, and high trust - you ship and see results quickly.
• Remote-friendly team with a simple setup and strong standards.
• Competitive compensation and room to grow as the company scales.

Company Operating Requirements:

At Graphio.ai we run a high-ownership, mission-driven team with clear operating rules. Please read these carefully before applying:

• LinkedIn profile is required (company policy). Employees are required to keep a current LinkedIn profile that shows their Graphio.ai position and is linked to the official Graphio.ai company page (company logo visible on the profile). Profile standards are provided during onboarding.
• Synchronized team vacations. The team takes coordinated time off four times per year to keep planning aligned and reduce context switching. Dates are announced in advance.
• Startup constraints. Vacation timing may be restricted during critical company periods. We plan time off as a team and communicate constraints early.
• Relocation readiness. Team members may reside in Ukraine, but must be prepared to relocate with their families to Europe or the United States if the company requests it and it becomes legally possible. Any relocation would be discussed in advance.
• Non-standard schedule. The role requires flexibility to collaborate across time zones. This may occasionally include early/late meetings depending on customer and team needs.
• Zero slow offboarding. We run lean and fast. When the fit isn’t there, we act quickly: employment may be ended within a day and access is removed immediately.

Application requirement: short intro video (required):

Please include a short self-introduction video (2–5 minutes). You can add the link directly to your resume or submit it through the hiring platform in any available way (YouTube, Loom, Google Drive, or similar).

• No need for a polished production, a simple smartphone recording is perfectly fine.
• This does not replace live conversations, it only helps us speed up the first screening and understand your communication style and motivation.
• In the video, please cover:
  • Who you are and 2–3 measurable outcomes you delivered in recent roles
  • Why you are applying for this role at Graphio.ai
  • Why you are leaving or have left your previous role
  • Your view on how a high-ownership startup team should operate (pace, ownership, communication, and work-life balance expectations)
• Applications without the video may not be reviewed.

Final note:

Graphio.ai is not a 9-to-5 corporate environment. We move fast, operate with high ownership, and expect proactive execution without micromanagement. Graphio.ai is a strong fit for people who actively seek challenges for personal growth - especially those who want to build their own company one day and see this as a place to learn how high-performing startups execute.