Jobs C# / .NET

🚀 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!

KoralX is looking for a talented D365 CRM Developer / Consultant to join our growing team. If you are passionate about building modern CRM Systems and enjoy working on real products used by international clients — we’d love to meet you.

Responsibilities

— Develop and maintain web applications using Blazor (Server or WebAssembly)
— Design and build REST APIs with ASP.NET Core
— Work with databases (design, queries optimization)
— Integrate with external services (APIs, Azure services, etc.)
— Implement business logic and complex forms (similar to CRM workflows)
— Develop reusable UI components in Blazor
— Write unit and integration tests

Requirements

— Experience with .NET (C#, ASP.NET Core)
— Hands-on experience with Blazor (Server or WebAssembly)
— Strong understanding of OOP, SOLID principles, and design patterns
— Experience building RESTful APIs (JSON, HTTP)
— Experience with Entity Framework Core or other ORMs
— Solid SQL knowledge (SQL Server / SQLite)
— Understanding of Dependency Injection
— Experience with Git
— Understanding of asynchronous programming (async/await)
— Basic knowledge of HTML and CSS

Nice to Have

— Experience with Azure (App Services, Functions, Storage)
— Knowledge of Docker / containerization
— Experience with SignalR (real-time features)
— Understanding of CI/CD (GitHub Actions / Azure DevOps)
— Experience with Microservices architecture
— Experience integrating with CRM/ERP systems
— Familiarity with frontend frameworks (React / Angular as a plus)

Our client is the leading SaaS provider of independent, highly automated financial aid management software solutions, supporting diverse enrollment models for higher education institutions in the U.S. Their solutions integrate with established student information systems, helping institutions improve efficiency, reduce errors, grow new programs, and deliver enhanced financial aid services for students.

This position is to join the client's Product Development team, which delivers high-quality products using a fast-paced Agile development model. The Software Engineer will contribute to the design, implementation, and testing of multiple SaaS products for the higher education market. 
Specifically, you will:

• Develop and maintain features using C#, ASP.NET MVC, and .NET Core;
• Build and maintain RESTful APIs with ASP.NET Web API;
• Write and optimize SQL Server queries and stored procedures;
• Collaborate with team members to design functional and technical specifications;
• Develop and automate unit tests;
• Troubleshoot and resolve software defects efficiently;
• Communicate proactively with team members to clarify requirements and prevent delays;
• Think creatively and thrive in a fast-paced, collaborative environment.

Required Skills and Experience:

• Strong experience with C#, ASP.NET MVC, and ASP.NET Web API;
• Solid understanding of RESTful API design principles and best practices;
• Strong SQL Server experience, including queries and stored procedures;
• Proficiency in JavaScript and modern frontend development;
• Experience developing software products with complex business rules;
• At least 5 years of professional software development experience;
• Demonstrated problem-solving skills and ability to work effectively in a fast-paced environment;
• Excellent communication skills and a proactive, team-oriented approach;
• Attention to detail and a commitment to high-quality work;
• Willingness to follow established policies, including time tracking, timely communication, and providing notice for planned time off;
• Ability to work occasional overtime and participate in on-call coverage, including weekends if required.

Nice-to-Have Skills:

• ReactJS, Kendo UI, Node.js;
• Docker, Kubernetes, MongoDB;
• .NET 10 / .NET Core experience.

We offer:

• Competitive market salary;
• Fully remote work;
• Convenient and somewhat flexible work hours (you will have to work until 20:00 Kyiv time GMT+3, or 1 pm EST);
• 28 days of paid time off per calendar year;
• Working on a very socially valuable product, alongside a highly professional, US-based, international team;
• Interesting challenges and the ability to grow and learn.

About nvrmind

nvrmind is a Swedish IT consultancy helping companies build and scale digital solutions within e-commerce, fintech, and data-driven systems. We work with both startups and established businesses, combining strong technical expertise with a deep understanding of business needs. As a consultant with us, you'll have the opportunity to take part in exciting projects, collaborate with experienced colleagues, and grow in a supportive, international environment where long-term partnerships matter.

About the client

Our client is a well-established Swedish sports e-commerce company with a broad online presence and a large product catalogue. They operate a modern, high-traffic platform and are continuously evolving their technical infrastructure to support growth and improve the customer experience.

The engineering team works with distributed backend systems and places a strong emphasis on reliability, scalability, and clean integrations across the stack. You'll be joining an existing team and contributing to backend development that powers their core commerce operations — from product data pipelines to order and integration flows.

Technical requirements

Core technologies

• Backend: .NET / C# (modern versions)
• Async & concurrency patterns
• REST APIs in distributed systems
• Message brokers (RabbitMQ, Kafka, Azure Service Bus, or similar)
• Resilience patterns (retries, circuit breakers, timeouts)
• CI/CD pipelines

• Microsoft Azure (foundational knowledge or above)

   

Required skills & experience

Must have

• 7+ years of professional backend development experience
• Strong grasp of async programming and concurrency in .NET
• Experience building and maintaining REST APIs in distributed or microservice architectures
• Hands-on experience with message brokers and event-driven design
• Familiarity with resilience and fault-tolerance patterns
• Working knowledge of CI/CD and automated deployment workflows
• At least basic experience with Microsoft Azure
• Strong communication skills, ability to work independently, and a professional presence in client-facing meetings

Nice to have

• Experience with PIM or e-commerce systems such as Akeneo, Shopify, or similar platforms

   

  Working style & setup

• Full-time engagement
• Remote from Ukraine
• Mix of independent work and close collaboration with the client's engineering team
• Start ASAP

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.

   

Key Requirements:

- At least 4 years with .net

- At least 2 years of on-hands experience with Umbraco 8 , 9 , 10 versions

- At least B2 English level (C1 will be a HUGE plus)

Key Responsibilities:

* Develop and maintain backend services, APIs, and message-driven integrations.

* Write clean, scalable, and efficient code adhering to coding standards and best practices.

* Participate in the entire application lifecycle, focusing on coding, debugging, testing, and deployment.

* Troubleshoot, debug, and upgrade existing systems to ensure performance, reliability, and security.

We offer:

- Become a part of rapidly growing Ecommerce Agency

- NO russian clients, NO russian colleagues!

- Remote work

- Paid time-off

- Flexible schedule

- Ability for a constant financial and professional growth

We are looking for a skillful Senior Full-Stack .NET Engineer. A perfect candidate must be able to adjust to constant business change. Common types of changes include new requirements, evolving goals and strategies, and emerging technologies.
 

About the client:

Founded in 1948, Fluke Corporation is a huge US-based enterprise with over 2,500 employees. It is a world leader in compact, professional electronic test tools, and software for measuring and condition monitoring.

We are collaborating on the solutions for the mobile operation, control, and maintenance of automated systems. The company’s products are designed for environments where downtime is a critical issue such as airports, warehouses, distribution centers, manufacturing operations, power stations, water treatment facilities, or renewable energy farms. The solutions are used by global leaders in manufacturing, airport operations, and logistics, such as Honda North America, Toyota UK, Volkswagen, Boston Logan Airport, Allessa Chemie, Zalando, Baur, Brillux, as well as many airports in Europe.

X5 eMaint - A CMMS software solution that centralizes maintenance information, facilitates processes, and automates some tasks to improve efficiency. Computerized maintenance management system software optimizes the use, availability, and life span of equipment, machinery, fleets, infrastructures, facilities, or operations
 

Requirements:

• At least 5 years of experience in software development projects. 
• Experience in working with big enterprise project
• Experience with implementing enterprise cloud native solutions in AWS (preferred) or MS Azure. 
• Experience in designing and developing asynchronous message-driven micro services with experience in RabbitMQ or similar. 
• Good knowledge in Relational and Non Relational DB design. 
• Good knowledge in functional and/or object-oriented software design and  domain-driven design (desired) using .NET and C#.  
• Experience in designing and developing user interfaces with React.js, TypeScript (desired) and CSS/Sass. 
• Practical knowledge designing RESTful and GraphQL (desired) API. 
• Good knowledge in Continuous integration and delivery best practices. 
• Upper-intermediate level of English (both oral and written)
   

Nice to have:

• Experience collaborating with UX and Product  
• Experience and passion for developing visually polished, engaging and fluid interfaces.
• Excellent problem-solving and collaboration skills.  
• Great written, verbal, technical and  interpersonal communications skills. 
   

Responsibilities:

• Design and implement complex, scalable, and maintainable full-stack solutions that  align with business goals.  
• Provide technical leadership, mentoring, and guidance to a team of developers, fostering a culture of continuous learning  and improvement. 
• Write efficient, testable, and maintainable code. 
• Drive initiatives to improve development  processes, automation, and overall team efficiency. 
• Troubleshoot and resolve technical issues, identifying root causes and implementing effective solutions. 
• Collaborate with stakeholders across the company including engineering, product,  support, and marketing to launch new features.
• Product development within Fluke Reliability is  an internationally distributed and diverse  organization. We embrace a culture of  innovation, continuous improvement, and individual empowerment to provide an  environment where individuals can grow and thrive.

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)

The family-style company is looking for a talented Optimizely developer to join our team. If you are looking for an awesome team, send us your CV!

To become a part of the UKAD team, make sure you are familiar with these technologies

• Optimizely CMS (Content Cloud) / Optimizely DXP
• Optimizely Web Experimentation / Feature Flagging
• Optimizely Content Graph

• Experience in migrating or upgrading solutions from Optimizely CMS 11 to CMS 13 is a plus.

   

Backend: .NET 6/7, ASP.NET Core, C#, REST API, GraphQL
Frontend: HTML / CSS / SCSS, JavaScript / TypeScript, React / Vue
Nice to have: Azure (App Services, Azure SQL, Azure Storage), Docker, CI/CD: Azure DevOps / GitHub Actions, Optimizely DXP Hosting

Our typical tasks list:

• Develop well-designed, easily maintainable, scalable, and reusable software
• Develop the solution according to existing software architecture defined by the architect
• Maintain software architecture documentation: diagrams, code samples, API descriptions, etc.
• Research, study, and develop technical solutions and technologies
• Implement performance/load/stress testing procedures according to project needs
• Enhance knowledge of preferred technologies, methodologies, standards, and policies
• Review design prototypes, participation in tech review.

We also expect you to be a really self-driven person because micromanagement and total control are not about UKAD. Feel free to choose technologies and solutions, in which you believe, as well as to be creative and responsible for the results.

What we offer:

• A really promising long-lasting project (you will be proud of yourself)
• Sane and polite, but effective management
• The best corporate culture (according to our teammates' opinions)
• Competitive salary and other stuff
• Remote work, full time

• Becoming not just another developer, but a part of UKAD with unique value and long-term relationships.

   

Some facts about UKAD to help you make a decision:

During 2022-2025, we only increased cooperation with our foreign partners

UKAD combines benefits of family-sized companies, like no bureaucracy, easy access to the executives, with sustainable growth and vast opportunities

Our company is strong enough to be not just a vendor but a tech partner. We can afford to choose customers that respect developers

UKAD is one of the leading employers in Kharkiv, according to DOU.

Aren't we the company you're looking for?

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.

Description

Our client is a leading provider of automotive services and digital marketing software, connecting the vehicle lifecycle from factory to scrapyard. They facilitate vehicle remarketing, logistics, and digital retail solutions for dealers, manufacturers, and fleet operators, specializing in defleeting, vehicle refurbishment, and electric vehicle (EV) infrastructure.

The new Marketplace is a next-generation platform that will unify vehicle remarketing across Europe. It represents a major step forward in delivering a scalable, multi-channel, and buyer-centric digital experience, while enabling OEMs, fleet clients, and dealers to operate more efficiently across borders.

Requirements

• Software Engineering background with hands on experience of .Net, AWS, Infrastructure-as-Code (Terraform), SQL & No-SQL databases and Event Driven systems.
• Experience working within fast paced teams, using Continuous Delivery and modern software Engineering practices.
• Demonstrable experience in delivering CLEAN code to a high standard, delivering software to an agreed specification and standard.
• Experience working with Product driven teams, adapting to changing demands of customers within a Lean / Agile environment.
• Experience of Test Driven Development (TDD).

Skills & Knowledge – Interpersonal and Non-Technical Skills
• Excellent interpersonal skills, verbal and written communication skills when working with both technical and non-technical stakeholders.
• Ability to articulate arguments well and is comfortable working with a wide range of stakeholders.
• A strong natural focus on what matters; delivering value and designing to minimise risk.
• Hands-on experience of working through the end-to-end project lifecycle within an Agile environment.
• The ability to work across multiple priorities in parallel and the ability to contribute to wider group strategies.
• Ability to work alone or collaboratively with minimal supervision.

The core tech Stack is emerging as follows:

• Could Platform: AWS
• IAC: Terraform
• Primary Compute: .NET 8 / Linux / Docker / AWS ECS

Elasticsearch (experience and how to query it effectively and how to ensure the index is modelled for performance)
• Worker Compute: AWS Lambda
• GraphQL – Apollo
• Databases: AWS DynamoDB
• Messaging: AWS EventBridge, SNS/SQS
• Web Experience: React
• Source Control: GitHub Enterprise
• CICD: GitHub Actions
• Observability: New Relic

Job responsibilities

As a Senior Software Engineer, you will play a key role in the development of the New Marketplace website.

You will work closely with cross-functional teams to deliver high-quality, scalable, and performant solutions that meet our users’ needs. If you are passionate about software development and have a strong background in .NET technologies, we want to hear from you.

Delivery of Quality is a must, and you will pride yourself not only on your code but also all aspects of you work.

Senior .NET Engineer (Industrial Robotics & Automation)

Location: Remote (with onsite visits to Germany) 

Language Requirements: German (B2) & English (B2) 
Key Stack: .NET, WPF/WinUI, C++/CLI, Hardware Integration

ABOUT THE PROJECT

Our client is a pioneer in optics manufacturing, developing a next-generation industrial platform. This isn't just "another enterprise tool", it’s a sophisticated ecosystem that merges high-end software engineering with robotics, advanced sensors, and real-time data processing. The platform provides intelligent control and automation for production processes where precision is measured in microns.
 

YOUR ROLE

As a Senior Engineer, you will be the bridge between complex algorithms and physical hardware. You will design and build high-performance desktop interfaces, handle real-time data from sensors, and ensure seamless communication between managed .NET code and low-level native modules.
 

RESPONSIBILITIES

• Core Development: Design and develop high-performance desktop applications using .NET/WPF/WinUI, focusing on real-time data visualization and control interfaces.
• Hardware Connectivity: Integrate software with robotics systems, sensors, and external SDKs using protocols like TCP/UDP, WebSocket, or gRPC.
• Native Interop: Work with C++ DLLs and native modules to bridge managed and unmanaged code layers for maximum performance.
• System Optimization: Optimize the platform for real-time processing in demanding industrial environments.
• Stakeholder Collaboration: Actively communicate with German-speaking partners and stakeholders, including onsite visits to Germany to clarify requirements and validate solutions.

• Architecture: Contribute to high-level architectural decisions and technical design, ensuring the system is fault-tolerant and scalable.

   

REQUIREMENTS

• Expertise in .NET: 5+ years of experience with C#, .NET, and .NET Core.
• Desktop Mastery: Strong experience with WPF, WinUI, or MAUI and deep knowledge of the MVVM pattern.
• Low-Level & Hardware: Practical experience with hardware integration, external SDKs, and working with native modules (C++/DLLs).
• High Performance: Solid understanding of multithreading, async/await, and performance profiling.
• Networking: Knowledge of communication protocols (TCP/UDP, WebSocket, REST, or gRPC).
• Languages: * German (B2 or higher): Essential for business trips and direct communication with the client.
  • English (Upper-Intermediate): For internal documentation and global collaboration.

• Autonomy: Proven ability to design systems from the ground up and make justified technical decisions.

   

NICE TO HAVE

• Experience in robotics, industrial automation, or R&D environments.
• Familiarity with 2D/3D visualization or custom UI components.
• Knowledge of path planning, signal processing, or mathematical modeling.
• Experience with measurement data processing.

🧑‍💻 Middle Software Engineer (.NET / AWS / React)

📌 About the Product

We are building a comprehensive IT Security platform that automates security analysis processes, integrates with development tools, and performs code scanning.

The product includes:

• A central portal (API + frontend)
• A set of tools for code analysis and security scanning
• Data processing pipelines for security metrics
• AI-powered components (agents and workflows)

🚀 Responsibilities

• Develop and maintain backend services using .NET
• Work with the frontend built in React (TypeScript)
• Integrate with external systems (e.g., GitHub, Jira, security scanning tools)
• Design and optimize background jobs for data collection and processing
• Contribute to internal tools development (.NET / Python)
• Work with AWS infrastructure (ECS, Lambda)
• Participate in CI/CD processes (GitHub Actions)
• Containerize and manage services using Docker

✅ Must-have requirements

• 2+ years of experience with .NET (C#)
• Hands-on experience with React + TypeScript
• Practical experience with AWS (especially ECS and/or Lambda)
• Strong understanding of Docker
• Experience designing and working with REST APIs and integrations
• Understanding of CI/CD practices (GitHub Actions or similar)
• Experience with Git and modern development workflows

⭐ Nice to have

• Experience with Python (automation, scripting, tooling)
• Knowledge of Infrastructure as Code (Terraform)
• Experience with container orchestration (ECS, Kubernetes)
• Experience building custom GitHub Actions (TypeScript)
• Background in Application Security / DevSecOps
• Experience with AI/LLM:
  • Building agents or workflows
  • Familiarity with Semantic Kernel or similar frameworks
• Experience with metrics collection systems or data pipelines

🧠 What we offer

• Opportunity to work on a complex product in the IT Security domain
• Ability to influence architecture and technical decisions
• Modern tech stack (cloud, AI, automation)
• Flexible environment with growth opportunities