Jobs C# / .NET

Skills / Focus:
 .NET (C#), cloud platforms (Azure/AWS), CI/CD, containerization, microservices, APIs, Python (optional), AI-assisted development
Responsibilities:
 • Understanding requirements and translating them into scalable platform and runtime architecture
 • Developing and maintaining management APIs and backend services (.NET where appropriate)
 • Designing and implementing cloud deployment patterns and runtime environments
 • Managing containerization, configuration, and operational readiness of services
 • Building and maintaining CI/CD pipelines and ensuring reliable delivery processes
 • Implementing Python-based components using AI coding assistance where applicable
 • Integrating with Aras platform APIs and knowledge model
 • Collaborating in agile teams and contributing to continuous improvement
 

Requirements:
 • 5+ years of experience in backend or fullstack development
 • Strong proficiency with .NET / C#
 • Experience with cloud environments (Azure, AWS or GCP)
 • Experience with CI/CD pipelines and DevOps practices
 • Hands-on experience with Docker and containerized environments
 • Understanding of microservices and distributed systems
 • Experience designing and building APIs
 • Familiarity with Python (as a plus)
 • Experience working in agile teams
 

Desirable:
 • Experience with Kubernetes and infrastructure as code (Terraform, Helm)
 • Experience integrating with external platforms or enterprise systems
 • Familiarity with AI-assisted development tools or workflows
 • Understanding of system observability and monitoring

What We Offer:
• Fully remote
• 21 paid vacation days + 3 paid sick leave days
• Working schedule: 9:00–18:00 or 10:00–19:00
• Cooperation format: Ukrainian FOP or European B2B contract

N-iX is looking for a Senior .Net Engineer for our client - a global marketplace for savings and investments, providing savers with effortless access to high-yield savings accounts and investment options from over 400 partner banks worldwide. It eliminates geographic limitations, ensuring transparency, convenience, and competitive rates. For banks, it offers cost-efficient deposit funding and innovative Banking-as-a-Service solutions.
You will join a cross-functional engineering team composed of frontend and backend engineers, responsible for the full end-to-end development lifecycle supporting our US business. From discovery and design to delivery, operations, and continuous improvement, we own our solutions throughout their entire lifecycle. We build and operate a mission-critical, 24/7 fintech platform that serves customers in a highly regulated and reliability-sensitive environment. Our systems demand high availability, scalability, resilience, and a strong focus on customer experience. 
 

Responsibilities:

• Write clean code and always follow the agreed best practices in the team.
• Do good code reviews, helping the team to keep best practices, business rules, and with respectful and constructive communication.
• Write automation tests, ensuring the quality of your software deliveries.
• Support a "green" development and staging environment, helping to identify and fix issues with the test pipelines.
• Take an active participation in the team ceremonies.
• Be capable of following the incident management process during regular working hours and also during your on-call shifts.
• Actively participate in TechDemo and other knowledge-sharing initiatives.
• Use AI tools (e.g., code completion, test generation, documentation assistance) to increase your development velocity and reduce boilerplate work.
• Evaluate AI-generated output critically, verifying its correctness, safety, and maintainability before integrating it into production code.
• Build your understanding of AI capabilities and limitations, and proactively learning how to use new tools provided by the organization or team.
   

Requirements:

• University degree in Computer Science or a related field, or equivalent practical experience.
• Experience working as a Full Stack or Backend Engineer.
• Strong experience with .NET or similar frameworks/libraries.
• Solid experience with relational databases such as SQL Server or similar.
• DevOps experience is a plus (CI, CD, logging, monitoring, etc.).
• Familiarity with cloud networking, primarily AWS.
• Experience developing APIs (REST, GraphQL, etc.) and working with design patterns such as MVC or microservices.
• Comfortable participating in discussions about technologies and system architecture topics.
• English - Upper-Intermediate+ or higher.
   

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Langate is an award-winning provider of web development services in 3 main categories: business, healthcare, and education. At Langate, we're passionate about crafting digital solutions that make a real impact. We take immense pride in our strong collaboration with the U.S.  We're here to shape the future of technology, one milestone at a time. 
In addition to technical expertise, we value excellent communication skills. Collaboration and effective teamwork are the cornerstones of our success, and we believe in fostering an environment where everyone’s voice is heard and valued. 
We're looking for a Technical Lead who will lead our team to deliver our new Software as a Service (SaaS) platform. You will collaborate with other product and technology teams, as well as lead a platform team to enhance a robust and efficient client experience holistically. You will be responsible for the management and guidance of full-stack software engineering, quality engineering, platform engineering teams, and all facets of resource management, budget, and delivery of the product roadmap. This leader is passionate about high-quality and on-time products that deliver amazing results to our clients. 

About the project: The project is an application designed for patient management within hospital and nursing home networks in the United States, along with billing and insurance functionalities. It serves two client instances with a shared codebase, but different configurations, handle large amounts of time-sensitive data and has complex DB and code architecture. 

Requirements:  

• 7+ years of experience leading product development delivery teams preferably cloud-based SaaS applications and services
• Strong and detailed knowledge of and experience with modern technology, .NET Stack, Angular, cloud computing, DevOps, continuous integration, and Agile development methodologies
• Excellent leadership and coaching skills
• Excellent communication skills and ability to interface with all functions at all levels of the organization
• Work experience that demonstrates a strong sense of ownership, urgency, and drive
• Experience building, operating, and maintaining SaaS applications and services on Azure preferred
• Enterprise and/or systems architecture design experience
• Excellent planning, communication and presentation skills needed, along with a well-rounded technical and business knowledge
• Ability to work with remote and international teams
• Able to work with cross-functional teams within the organization
• English – Upper Intermediate - Advanced 

Responsibilities: 

• Define and drive the project’s technical vision, ensuring alignment with business goals and industry best practices
• Lead architecture design and high-level technical decisions across two client instances with a shared codebase
• Conduct thorough impact analysis for all proposed changes to ensure system stability, scalability, and data integrity
• Drive technical excellence across the team by enforcing code quality, security standards, and performance optimization practices
• Collaborate with developers, DB engineer, QA, BAs, and tech writer to deliver reliable and maintainable solutions
• Oversee CI/CD processes in Azure DevOps, ensuring smooth and secure deployments of time-sensitive healthcare features
• Review and validate system and application architecture to support high-load, sensitive data operations in a compliant manner
• Mentor and guide a cross-functional team of engineers, fostering continuous improvement and technical growth
• Proactively identify technical risks and bottlenecks; propose and implement mitigation strategies
• Ensure effective documentation and technical communication across stakeholders
• Communicate our solutions to client representatives, both from technical and business sides    

Team: 1 Team Lead, 2 Senior .NET Full Stack devs, 2 Middle .NET Full stack devs, 1PM, 3QAs, 1 DB developer, 2 BAs, 2 DevOPS engineers.    

Schedule: 5/2, 8-hour working day (40 hr per week), flexible schedule. Need at least 4 hours of overlap with the client in EST.   

We offer:  

• Competitive salary
• Official employment, paid sick leave, 20 days of paid vacation
• Free English lessons    
• Flexible work schedule    
• Official Ukrainian holidays are non-working days  
• Paid courses and certifications    
• Сoach / psychologist consultation   
• Workshops    
• Career development plan
• Mentoring Education    
• Medical Health Insurance 

Why Choose Us? What Do We Offer that's Exceptional?    

1. Cutting-Edge Technologies on Real Projects: At Langate, you'll work with the latest technologies on live projects. We're a dynamic, fast-growing company, so you'll find a minimal amount of legacy systems and plenty of opportunities to implement new technologies.
2. Work-Life Balance with Benefits: We value work-life balance and offer paid time off, including vacation days and sick leave. Remote work options and hearty life are part of the package too.    
3. Investment in Your Growth: We're committed to your professional development. You can expect training programs, courses, and opportunities to enhance your English language skills.   
4. Team Building and Unity: We know that a happy team is a productive team. That's why we organize team-building events and group activities to foster strong bonds and a sense of belonging.    

When you choose us, you're choosing a company that values innovation, invests in its employees, and provides a supportive and engaging work environment. Join us in shaping the future of technology!  

Need more information? Welcome! 

About your key responsibilities and impact:

• Designing and implementing scalable and efficient software architectures;
• Writing, testing, and debugging complex code for new and existing software applications;
• Providing guidance and mentorship to junior engineers and team members;
• Conducting thorough code reviews to ensure code quality, security, and best practices;
• Creating and maintaining comprehensive technical documentation for software development and system design;
• Leading and managing software development projects, ensuring timely delivery and quality (shared responsibility with the Delivery Manager);
• Working closely with cross-functional teams, including product management, design, and operations, to align development efforts with business goals;
• Researching and implementing new technologies and methodologies to improve software performance and development processes;
• Identifying and resolving complex software issues and technical challenges;
• Driving continuous improvement in software development practices and processes;
• Communicating effectively with stakeholders, including presenting technical concepts and project updates;
• Delivering code to production in a timely manner according to business expectations.

Essential professional experience:

• 3+ years of experience in back end;
• System Design & Architecture – strong experience designing scalable, resilient .NET systems using microservices, event-driven and cloud-native architectures (Azure/AWS);
• Backend Expertise – advanced C# skills, RESTful API development, asynchronous programming, and deep understanding of design and resilience patterns (DDD, CQRS, circuit breaker, etc.);
• Database Mastery – proficiency in SQL optimization, data modeling, indexing, and experience with both relational and NoSQL databases;
• Messaging & Performance – hands-on Kafka expertise, high-load system optimization, caching, and distributed computing;
• DevOps & Cloud – solid experience with CI/CD pipelines, Docker/Kubernetes, and infrastructure automation;
• Quality & Observability – strong focus on testing (xUnit, NUnit), monitoring (Serilog, App Insights), and secure coding practices;
• Leadership & Collaboration – mentoring peers, driving technical decisions, and ensuring engineering excellence within Agile teams;
• Languages – Intermediate+ English, B2+ Ukrainian/Russian

Get to know us

Ideals is a global B2B SaaS product company recognized as the most highly rated and customer-centric brand in the secure business collaboration market. Trusted by over 2,000,000 users from 175,000 companies globally, we are on a mission to create more prosperity in the world by accelerating high-stakes business decisions. We achieve this by delivering extremely intuitive and robust software products that help people make impactful decisions with less stress, higher quality, and shorter hours. Our key products include:

Ideals Virtual Data Room (VDR): A secure, cloud-based platform for sharing confidential documents during due diligence, fundraising, M&A, legal transactions, and other business-critical workflows.

Ideals Board: A platform for boards and executive teams to streamline governance and enhance decision-making in a fast, secure, and compliant way.

The role

We are looking for a Software Engineer, Backend (.NET) with AI skills who will play a key role in building and scaling secure, high-load VDR services, with the additional opportunity to apply AI patterns to product features.

Your success in this role will be measured first by strong backend fundamentals: reliability, performance, scalability, and maintainability, and second by your ability to enable AI features safely and efficiently, using reusable and well-architected components.

This is a hands-on engineering role within a mature product environment, where engineering quality, observability, and long-term architecture matter.

What you will do

BE Engineering:

• Design, develop, and operate production-grade .NET services
• Work with .NET Framework 4.7, .NET 8, ASP.NET, Web API, Entity Framework
• Design and optimize data models using MS SQL Server / PostgreSQL
• Build and run services in AWS, using Docker, Kubernetes, ArgoCD
• Ensure service reliability and performance through:
• Clear SLIs/SLOs and capacity planning
• Caching, retries, backoff strategies, circuit breakers
• Secure multi-tenant access control
• Own services end-to-end: design, implementation, deployment, monitoring, and support
• Contribute to architecture and design reviews
• Improve code quality through code reviews, refactoring, and best practices

AI Enablement:

• Integrate AI/LLM providers behind clean, provider-agnostic abstractions
• Implement retrieval-augmented generation (RAG): chunking, embeddings, vector search
• Build safe AI flows with: Context scoping and validation, “Cannot answer” scenarios, Prompt-injection defenses
• Add evaluation and observability: Offline and online quality metrics, Monitoring tied to product KPIs
• Create reusable AI components (libraries, middleware, templates) adopted by other teams
• Share knowledge on safe and scalable AI usage

What you bring

• Strong experience with C# / .NET in production environments
• Solid knowledge of ASP.NET, Web API, Entity Framework
• Experience with relational databases (MS SQL Server, PostgreSQL)
• Hands-on experience with AWS
• Experience with Docker, Kubernetes, CI/CD pipelines
• Understanding of distributed systems, performance tuning, and reliability patterns
• Experience working in cross-functional product teams
• Strong written and spoken English (B2 level or above)

AI Skills (strong advantage)

• Experience with retrieval & vector search (embeddings, chunking, hybrid search)
• Integration with LLM providers (Azure OpenAI, AWS Bedrock, or open-source models)
• Experience with: structured outputs, streaming responses, provider-agnostic AI abstractions
• Knowledge of AI guardrails & evaluation: output validation, quality metrics, safe usage patterns
• Ability and willingness to mentor peers in applied AI practices

What we offer

We highly value our people, so we will empower you with all the resources and support to help you reach your full potential.

For your best work

• Remote-first flexibility to shape your ideal workday
• Home workplace budget
• Resilient home budget for Ukraine-based teammates
• Resilient office in Kyiv & co-working expense coverage
• Individual IT budget for extra equipment
• Top-tier tech and AI-powered tools

For your growth

• Access to Ideals Academy with numerous courses
• Investment in external learning and development activities
• Guidance in Personal Development Plan creation
• Professional literature and subscriptions coverage
• Support of your passion as a speaker or writer
• Internal talent mobility opportunities

For your well-being

• Medical insurance and Wellness Package for sports activities
• Full coverage of mental health sessions for Ukrainian teammates
• Funding for sports competitions
• 20 business days of paid time off per year
• Unlimited health-related time-off

Extra perks

• Team-building offline and online events
• Budget for meetups with your local team
• Generous internal referral program

Our culture

Commitment, Excellence, Collaboration, Trust and Care are core values to the Ideals team. For us, these are the principles that every Idealer lives and breathes. We are on the lookout for like-minded individuals who share our values. By doing so, we create a team where talents feel at ease and work to the best of their abilities.

Discover more.

Ideals is an equal opportunity employer

Ideals is made up of people from a wide variety of backgrounds and lifestyles. We embrace diversity and invite applications from people from all walks of life. We don’t discriminate against employees or applicants based on gender identity or expression, sexual orientation, race, religion, age, national origin, or citizenship.

We are looking for C# developer for our music software

( work in Lviv or Kyiv,

remote work possibility ):

www.MusConv.com

About the project:

MusConv is b2c music software which helps people synchronize their music between music services: Spotify, Apple Music, YouTube Music, Amazon Music, Tidal and others.

We offer:

Challenging interesting project

Professional growth and development program

Flexible schedule

Team of highly talented individuals

Access to developer courses like https://www.pluralsight.com

Mentor: code reviews, studying( fiddler, postman, asynchronous programming, etc.)

5% of sources is simple gui based on xaml( avalonia similar to wpf )

95% of sources is regular .net standard( backend to interact with different music services )

We are looking for C# developer to implement new features

Project Description:

Our team is working for one of the world's largest providers of products and services for the ever-evolving needs of the energy industry. Oil and gas domain, well logging.
We are working with Azure cloud, GIT, Kubernetes, using C#, C++ last standards (C++ 17, potentially 20). Using SCRUM framework.

Responsibilities:

• Review and analyze tasks in Product Backlog Items provided by Product owner
• Participation in grooming sessions and proactive task requirements and acceptance criteria clarification
• Work as part of a team using Azure environment
• Work with the team on development and resolving issues
• Implement software changes from Product Backlog Items and technical requirements
• Work with the QA team to determine if the application fit Product Backlog Items and technical requirements
• Identify and fix bugs, find solutions to the problems
• Maintain code quality, organization, and automatization
• Maintain the developed software efficiently through a solid knowledge of software lifecycle

Mandatory Skills Description:

• 4+years of experience and strong knowledge in C/C++
• 3+ years’ experience and strong .NET/C# knowledge
• Environment and tools: Docker, GIT, CMake, WPF, WCF
• SOA, Microservices, Solid principles, DDD
• Experience with databases (SQL)
• Problem-solving, proactive in task clarification, analytical thinking
• SCRUM framework knowledge and understanding of CDLC
• English level: Intermediate+
• Ability to work effectively in a team and with international clients

Nice-to-Have Skills Description:

• gRPC
• Kubernetes
• Multithreading knowledge
• PowerShell scripting
• Azure cloud
• Oil and Gas domain knowledge

Languages:

English: C2 Proficient

• Project Description:

  Our team is working for one of the world's largest providers of products and services for the ever-evolving needs of the energy industry. Oil and gas domain, well logging.

  
  We are working with Azure cloud, GIT, Kubernetes, using C#, C++ last standards (C++ 17, potentially 20). Using SCRUM framework.

   

• Responsibilities:

  • Review and analyze tasks in Product Backlog Items provided by Product owner
  • Participation in grooming sessions and proactive task requirements and acceptance criteria clarification
  • Work as part of a team using Azure environment
  • Work with the team on development and resolving issues
  • Implement software changes from Product Backlog Items and technical requirements
  • Work with the QA team to determine if the application fit Product Backlog Items and technical requirements
  • Identify and fix bugs, find solutions to the problems
  • Maintain code quality, organization, and automatization
  • Maintain the developed software efficiently through a solid knowledge of software lifecycle

   

• Mandatory Skills Description:

  • 4+years of experience and strong knowledge in C/C++
  • 3+ years’ experience and strong .NET/C# knowledge
  • Environment and tools: Docker, GIT, CMake,WCF
  • SOA, Microservices, Solid principles, DDD
  • Experience with databases (SQL)
  • Problem-solving, proactive in task clarification, analytical thinking
  • SCRUM framework knowledge and understanding of CDLC
  • English level: Intermediate+
  • Ability to work effectively in a team and with international clients

• Our team is working for one of the world's largest providers of products and services for the ever-evolving needs of the energy industry. Oil and gas domain, well logging.
  We are working with Azure cloud, GIT, Kubernetes, using C#, C++ last standards (C++ 17, potentially 20). Using SCRUM framework.

   

• Responsibilities:

  • Review and analyze tasks in Product Backlog Items provided by Product owner
  • Participation in grooming sessions and proactive task requirements and acceptance criteria clarification
  • Work as part of a team using Azure environment
  • Work with the team on development and resolving issues
  • Implement software changes from Product Backlog Items and technical requirements
  • Work with the QA team to determine if the application fit Product Backlog Items and technical requirements
  • Identify and fix bugs, find solutions to the problems
  • Maintain code quality, organization, and automatization
  • Maintain the developed software efficiently through a solid knowledge of software lifecycle

   

• Mandatory Skills Description:

  • 4+years of experience and strong knowledge in C/C++
  • 3+ years’ experience and strong .NET/C# knowledge
  • Environment and tools: Docker, GIT, CMake, WPF, WCF
  • SOA, Microservices, Solid principles, DDD
  • Experience with databases (SQL)
  • Problem-solving, proactive in task clarification, analytical thinking
  • SCRUM framework knowledge and understanding of CDLC
  • English level: Intermediate+
  • Ability to work effectively in a team and with international clients

   

• Nice-to-Have Skills Description:

  • gRPC
  • Kubernetes
  • Multithreading knowledge
  • PowerShell scripting
  • Azure cloud
  • Oil and Gas domain knowledge

   

• Languages:
  • English: C2 Proficient

• Project Description:

  Our team is working for one of the world's largest providers of products and services for the ever-evolving needs of the energy industry. Oil and gas domain, well logging.
  We are working with Azure cloud, GIT, Kubernetes, using C#, C++ last standards (C++ 17, potentially 20). Using SCRUM framework.

• Responsibilities:

  • Review and analyze tasks in Product Backlog Items provided by Product owner
  • Participation in grooming sessions and proactive task requirements and acceptance criteria clarification
  • Work as part of a team using Azure environment
  • Work with the team on development and resolving issues
  • Implement software changes from Product Backlog Items and technical requirements
  • Work with the QA team to determine if the application fit Product Backlog Items and technical requirements
  • Identify and fix bugs, find solutions to the problems
  • Maintain code quality, organization, and automatization
  • Maintain the developed software efficiently through a solid knowledge of software lifecycle

• Mandatory Skills Description:

  • 4+years of experience and strong knowledge in C/C++
  • 3+ years’ experience and strong .NET/C# knowledge
  • Environment and tools: Docker, GIT, CMake, WPF, WCF
  • SOA, Microservices, Solid principles, DDD
  • Experience with databases (SQL)
  • Problem-solving, proactive in task clarification, analytical thinking
  • SCRUM framework knowledge and understanding of CDLC
  • English level: Intermediate+
  • Ability to work effectively in a team and with international clients

• Nice-to-Have Skills Description:

  • gRPC
  • Kubernetes
  • Multithreading knowledge
  • PowerShell scripting
  • Azure cloud
  • Oil and Gas domain knowledge

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.

Responsibilities

• Develop and customize solutions on the Creatio platform
• Implement business logic using Creatio configuration tools
• Develop backend logic using C# and SQL
• Build integrations with external systems via REST APIs
• Implement workflows, data models, and UI components
• Participate in code reviews and technical discussions
• Work with business analysts and senior developers to implement requirements
   

Requirements

• 2+ years of software development experience
• Experience with C#
• Experience with JavaScript
• Experience with SQL
• Understanding of REST APIs
• Basic understanding of web application architecture
• Ability to work with existing codebase and platform configuration
• English B2 or higher. German will be a plus. 

Responsibilities

• Design, develop, and maintain complex applications on the Creatio platform
• Implement and extend business logic using Creatio configuration tools and server-side development
• Develop backend logic using C# and SQL
• Build integrations with enterprise systems via REST / OData APIs and web services
• Implement data models, workflows, and UI components
• Ensure solution performance, scalability, and maintainability
• Review code and contribute to development best practices
• Participate in architecture discussions and technical decision making
• Collaborate with consultants and project leads to translate business requirements into technical solutions
   

Requirements

• 5+ years of experience with Creatio development
• Strong knowledge of Creatio architecture, configuration, and customization
• Strong experience with C#, JavaScript, SQL
• Experience integrating enterprise systems using REST or OData APIs
• Experience with relational databases (MS SQL Server, PostgreSQL)
• Experience with version control systems (Git)
• Understanding of integration patterns and data synchronization
• Experience with CI/CD pipelines and deployment automation
• Ability to design maintainable and scalable solutions
• English B2 or higher. German will be a plus

Executive Summary

You will design, develop, and maintain backend and system-level components aligned with approved enterprise architecture, security standards, and governance frameworks. You’ll deliver features that meet functional and non-functional requirements, follow secure coding practices, and integrate cleanly across our ecosystem: Azure, APIs, databases, and CI/CD pipelines.

You will operate within defined architectural boundaries and collaborate with Architects, Product Owners, QA, DevSecOps, and business stakeholders to ship high-quality, scalable, secure solutions.  You must have a secure-by-design mindset (OWASP Top 10, RBAC, identity integration) for this role.

Role Purpose

Design, build, and maintain backend/system-level components aligned with architectural standards.

About the project 

We’re taking ownership of a large, mission-critical enterprise platform currently operated by an external vendor. The system is live and security-sensitive, and we’re modernizing it over time:

• Primary backend stack: C# / .NET (6+), with most new work on .NET 8 (LTS)
• Legacy areas exist: ASP.NET Framework 4.8 and some WCF
• Cloud: Microsoft Azure
• Data: SQL Server primarily, some MySQL
• Frontend exists (React/Angular), but this role is backend/system-level

• Documentation is mixed due to the transition; part of the work is improving clarity as you go.

   

Core Responsibilities

1) Software Development & Implementation

• Develop backend services, APIs, and system components based on approved backlog items and technical designs.
• Translate user stories and functional requirements into scalable solutions.
• Implement business logic following clean architecture and principles.
• Follow coding standards, architectural guidelines, and agreed design patterns.

2) Code Quality & Maintainability

• Write clean, maintainable, testable, well-documented code.
• Perform peer reviews and address review feedback.
• Refactor legacy code where needed to improve performance and maintainability.
• Maintain strong version control discipline: branching strategy, pull requests, merges.

3) Testing & Quality Assurance

• Develop and maintain unit tests using approved frameworks (xUnit / NUnit / MSTest).
• Use mocking frameworks appropriately (e.g., Moq/NSubstitute equivalents).
• Participate in integration testing and support QA during testing cycles.
• Meet quality gates (coverage/standards) before release.
• Support debugging, root-cause analysis, and defect resolution.

4) Security & Compliance

• Apply secure coding practices aligned with OWASP Top 10.
• Identify and mitigate vulnerabilities; follow DevSecOps quality controls.
• Correctly handle authentication, authorization, encryption, and data protection.
• Implement RBAC and identity-based access patterns (JWT/OAuth2; Entra ID integration where applicable).
• Comply with mandatory SAST scanning gates prior to release.

5) Performance & Reliability

• Optimize database queries and system performance (SQL Server/MySQL).
• Build scalable, resilient services and APIs.
• Implement logging/monitoring/exception handling best practices (e.g., Application Insights, Serilog).
• Use performance profiling techniques when needed to diagnose bottlenecks.

6) DevOps & Deployment Support

• Support CI/CD pipeline integration and delivery workflows (Azure DevOps).
• Assist in staging and production deployments under governance checkpoints.
• Participate in troubleshooting production incidents when required.

7) Cross-Functional Collaboration

• Work closely with Solution Architects, Product Owners, QA, DevSecOps, and UI/UX teams.
• Escalate technical risks and architectural concerns early and clearly.

Authority

• Own implementation decisions within approved architectural boundaries.
• Cannot redefine scope or bypass architecture/security standards.
• Must escalate technical risks, architectural concerns, or scope-impacting issues to the Architect and Product Owner.
• Cannot approve production deployment outside defined governance checkpoints.

Required Qualifications

Education

• Bachelor’s degree in Computer Science / Software Engineering / Information Systems (or similar).
• Master’s degree is a plus.

Experience

• 5+ years backend development experience.
• Proven experience delivering enterprise-grade applications.
• Experience working in Agile/Scrum environments.
• Experience with production-grade Azure-hosted applications.

Required Technical Stack

Core Technologies

• C# / .NET Core / .NET 6+ (most new work on .NET 8 LTS)
• ASP.NET Core Web API
• Entity Framework and/or other ORM tools
• SQL Server (advanced querying and performance tuning mindset)

API & Integration

• RESTful APIs
• Data exchange: JSON / XML
• API auth: JWT, OAuth2, identity integration (Entra ID)

Cloud & DevOps

• Microsoft Azure (App Services, Storage, Functions)
• Azure DevOps (CI/CD pipelines)
• Git

Security

• OWASP Top 10 awareness
• Secure coding best practices
• RBAC implementation patterns

Testing

• xUnit / NUnit / MSTest
• Mocking frameworks
• Unit + integration testing practices

Technical Awareness

• Microservices architecture basics
• Logging/monitoring tools (Application Insights, Serilog, etc.)
• Docker basics (preferred)
• CI/CD best practices
• Performance profiling techniques

Core Competencies

Technical

• Strong problem solving and analytical skills
• Code optimization and debugging expertise
• Understanding of system design principles
• Secure development mindset

Behavioral

• Accountability and ownership
• Structured thinking
• Attention to detail
• Ability to work under pressure
• Clear communication with technical and non-technical stakeholders
• Continuous learning mindset

Maturity / Level Expectations

• Lead technical modules and drive them to completion.
• Mentor less experienced engineers when needed.
• Participate in design discussions and contribute improvements.
• Review critical code changes and uphold engineering standards.

Recommended Certifications (Nice-to-have)

• AZ-204 (Azure Developer Associate)
• AZ-900 (Azure Fundamentals)
• Secure coding / OWASP training
• Microsoft security certifications (optional)

Interview Process

1. 20–30 min intro call
2. Technical interview (system design + deep .NET/API/SQL + security mindset)
3. Final discussion + offer