Jobs C# / .NET

UNITY-BARS - українська ІТ компанія, яка спеціалізується на розробці та впровадженні банківського програмного забезпечення та фінансових установ, у пошуках  Middle - Senior .NET Developer 

Необхідно:

• .NET, .NET Core; 
• Web API; 
• RxJS; 
• Entity Framework; 
• Angular; 
• NgRx; 
• Reactive Forms; 
• REST API; 
• EF Core; 
• DI (dependency injection); 
• SOLID principles; 
• HTML & CSS;
• JWT; 
• Досвід роботи від 2х років. 

Буде перевагою: 

• Технічна освіта (Інформаційні технології, комп’ютерні науки та ін.); 
• Досвід роботи з Kafka (на рівні принципів producer/consumer) та SignalR. 

Що будемо робити:

• Розробка інтеграційного модуля; 
• Адаптація існуючих рішень. 

Ми пропонуємо: 

• Офіційне працевлаштування;
• Змішаний графік роботи;
• Медичне страхування;
• Корпоративні курси англійської;
• Проєкти для країни та комерційного ринку, а також можливість постійного навчання та розвитку. 

Етапи підбору: співбесіди (онлайн) soft skills /hard skills / final

.NET Full-Stack Engineer -  Microsoft Teams Bots & Communications
 

We’re looking for an experienced .NET Full-Stack Engineer to join a long-term product team working within the Microsoft Teams ecosystem.
 

The role is primarily backend-focused and combines Microsoft Teams bots, Microsoft Graph integrations, real-time activity processing, notifications, and communication-related functionality.
 

You’ll work on production features inside Microsoft Teams, including bot interactions, activity feeds, communication events, and integration with Microsoft 365 services.
 

What you’ll work on

• Design, develop, and maintain Microsoft Teams bots that process user and system activity in real time.
• Build and improve a real-time activity feed bot that sends timely notifications to users’ Teams activity feed through Microsoft Graph.
• Develop integrations with Microsoft Graph API, Microsoft Teams APIs, and Microsoft 365 services.
• Work with Teams-related functionality such as calls, meetings, participants, recordings, call records, notifications, and communication data.
• Build backend services for collecting, processing, and exposing Teams activity and communication data.
• Implement real-time functionality using SignalR / WebSockets where applicable.
• Set up and manage bot authentication and permissions with Microsoft Entra ID (Azure AD).
• Contribute to frontend functionality using React / Angular / TypeScript when needed.
• Troubleshoot application-level integration issues and improve reliability and performance.
   

Core stack

• C# / .NET / ASP.NET Core
• Microsoft Graph API
• Microsoft Teams APIs
• Microsoft Graph Communications / Cloud Communications APIs
• Microsoft Bot Framework / Teams bots
• Microsoft Entra ID
• SignalR / WebSockets
• SQL
• REST APIs
• React / Angular / TypeScript
   

Requirements

• 5+ years of commercial experience with C# / .NET
• Strong backend experience with ASP.NET Core
• Commercial experience with Microsoft Graph API
• Hands-on experience with Microsoft Teams integrations
• Experience developing or supporting Teams bots
• Understanding of Teams activity feed notifications, Graph permissions, authentication, and event-driven integrations
• Experience with Microsoft Entra ID / Azure AD authentication and permissions
• Experience with SQL and REST APIs
• Ability to independently deliver integrations and troubleshoot production issues
• English B2+
   

Strong advantage

• Microsoft Graph Communications / Cloud Communications APIs
• Teams calls / online meetings / call records / recordings / participants
• Real-time audio/media
• VoIP / telephony
• WebRTC
• SIP / RTP
• Direct Routing
• Azure Communication Services
• High-load or distributed systems
   

About the project

This is a long-term product, not a short-term integration project. You’ll join a stable development team with an ongoing roadmap and deep involvement in the Microsoft Teams ecosystem.

The role combines backend engineering, cloud infrastructure, Microsoft Graph integrations, Teams bot development, and real-time communication functionality.
 

What we offer

• Long-term cooperation
• Full-time engagement
• Stable US-based client
• Predictable workload
• Paid vacation and sick leave
• Professional development support
• Equipment provided
• Office lunches
• Anniversary and baby bonuses

Creatio is an AI CRM and workflow platform where people and AI agents work together - with no limits on users, agents, or scale. We help midsize and large organizations run customer workflows in the AI era. With a global team and a large ecosystem of partners, Creatio serves thousands of customers in over 100 countries and automates tens of millions of workflows daily. Genuine care for our clients and partners is at the heart of our DNA.

We’re proud to be recognized by top industry analysts as a Leader and Strong Performer in multiple Gartner and Forrester reports.

In 2025, Creatio was named to Inc.’s Best Workplaces list, recognizing our commitment to employee wellbeing and a strong workplace culture.

Who We’re Looking For

We are looking for an AI Software Engineer to design, build, evaluate, and operate AI-powered capabilities within the Creatio platform.

You will join the AI teams building the agent platform that enables AI agents to safely perform real work in the product: call tools and APIs, read and write data, maintain context, follow permissions, and escalate to humans when needed.

The team also owns the core infrastructure for testing, monitoring, logging, observability, and cost/performance control, ensuring AI agents are reliable, scalable, secure, and production-ready.

This role combines strong software engineering expertise with hands-on AI engineering experience. You will work on enterprise-grade AI solutions, including assistants, copilots, knowledge systems, semantic search, RAG-based capabilities, and agentic workflows.

Responsibilities:

• Design and implement AI-powered product features within the Creatio platform.
• Build assistants, copilots, agentic workflows, knowledge systems, RAG, and semantic search capabilities.
• Integrate LLM providers, tools, enterprise data sources, and MCP-based solutions.
• Develop and maintain backend services using C# and .NET.
• Build evaluation frameworks, quality gates, and observability practices for AI solutions.
• Monitor and improve the quality, latency, cost, reliability, and security of AI capabilities.
• Apply AI coding assistants and engineering agents as part of the daily development workflow.

Requirements:

• Strong experience with C# and .NET.
• Hands-on experience with LLMs, prompt engineering, function calling, and structured outputs.
• Understanding of agent architectures, MCP, RAG, embeddings, vector search, and semantic search.
• Experience with AI evaluation, observability, security, and Responsible AI practices.
• Solid understanding of API design, distributed systems, and software architecture.
• Experience with SQL databases, testing, CI/CD, and cloud-native development.
• DevOps fundamentals, including Docker containerization and basic Kubernetes knowledge.
• Strong knowledge of engineering best practices and production-grade software development.

What to expect from us:

• Growth & Development: Clear career paths, mentorship opportunities, and access to continuous learning to help you reach your full potential.
• Flexibility & Well-Being: We provide flexible work arrangements and initiatives that empower you to manage your schedule effectively, stay productive, and thrive both personally and professionally.
• Recognition & Impact: A culture that celebrates achievements, values your ideas, and empowers you to make real contributions from day one.
• Innovative Culture: Be part of a company that embraces new ideas, modern technologies, and bold thinking to stay ahead of the curve.
• Benefits & Rewards Package: We provide competitive compensation and benefits designed to support you and your family. Our rewards approach goes beyond salary, recognizing your contributions and commitment. The exact package may vary depending on your country of residence and employment type.

We are looking for an experienced Senior .NET Developer to join our engineering team and help build a modern FinTech platform. You'll play a key role in designing scalable solutions, driving technical decisions, and mentoring other developers.

Responsibilities:

- Design, develop, and maintain scalable backend applications.

- Build and optimize high-performance APIs and services.

- Contribute to system architecture and technical strategy.

- Conduct code reviews and mentor team members.

- Collaborate with Product, QA, and DevOps teams.

- Ensure high code quality and system reliability.

Requirements:

- 5+ years of commercial experience with C#/.NET.

- Strong expertise in .NET Core / .NET 8 and ASP.NET Core.

- Extensive experience designing REST APIs.

- Strong knowledge of SQL and database optimization.

- Experience with Entity Framework Core.

- Solid understanding of microservice architecture.

- Hands-on experience with Docker and Kubernetes.

- Experience with Azure or AWS.

- Deep understanding of OOP, SOLID, and design patterns.

- Upper-Intermediate English or higher.

Nice to Have:

- Experience with message brokers (RabbitMQ, Kafka, Azure Service Bus).

- Experience with Redis.

- Background in FinTech, banking, or payment systems.

- Experience mentoring developers and leading technical initiatives.

We are looking for a  Senior/Str Middle .Net developer to join a product engineering team and work on the modernization and scalability of a large-scale backend platform.

You’ll be working with distributed systems, event-driven architecture, microservices, and real-time data processing, helping migrate legacy components to modern, cloud-ready services.

What you’ll do

• Develop and maintain containerized .NET Core microservices.
• Build event-driven communication and streaming flows using Kafka, RabbitMQ, and MassTransit.
• Design scalable solutions together with product and engineering teams.
• Drive migration from legacy .NET Framework and MSMQ components to modern services.
• Work with both relational and NoSQL databases.
• Participate in architecture and design reviews.
• Apply Domain-Driven Design and clean code principles.
• Improve system reliability, scalability, and performance.

• Mentor less experienced engineers and contribute to engineering best practices.

   

What we’re looking for

• 5 - 8+ years of backend development experience.
• Strong commercial experience with C# and .NET Core/.NET Framework.
• Kafka and RabbitMQ — mandatory.
• Solid understanding of microservices, distributed systems, and event-driven architecture.
• Experience with MSSQL, PostgreSQL, MongoDB, and Redis.
• Experience designing and working with APIs.
• Understanding of security practices such as OAuth2, JWT, and secrets management.
• Strong debugging, profiling, and performance optimization skills.
• Experience with testing, clean code, and continuous improvement.
• Strong communication skills and a proactive approach.

• Ability and willingness to mentor other developers.

   

Nice to have

• AWS — ECS/EKS, Lambda, RDS, S3, CloudWatch.
• MassTransit or similar orchestration libraries.
• Experience with infrastructure and cloud-native systems.
• MSMQ and legacy system migration experience.
• CI/CD, Docker, and Infrastructure as Code.
• JavaScript/React for cross-layer collaboration.

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.

   

We are looking for a .NET WPF Engineer to take full technical ownership of a Windows desktop application within a well-established software product.

Our customer is one of the world’s top 10 leading software publishers, and the product competes with well-known global brands.

This is an autonomous role for an engineer who is comfortable taking responsibility for an existing application, making technical decisions, developing new functionality, improving architecture, and maintaining the product’s stability and performance.

You will have significant ownership over the application and will be expected to independently drive development from requirements through implementation and delivery.

Responsibilities

• Take full technical ownership of the assigned Windows desktop application
• Design, develop, maintain, and improve WPF/.NET applications
• Independently analyze requirements and translate them into effective technical solutions
• Make technical decisions related to application architecture and development
• Work with MVVM, Prism, and Dependency Injection
• Develop new features and improve existing functionality
• Take ownership of existing and legacy components, identifying areas for refactoring and improvement
• Integrate the desktop application with backend services and REST APIs
• Investigate and resolve complex technical issues, bugs, and performance problems
• Ensure application stability, performance, and maintainability
• Take responsibility for the technical quality and delivery of your work

Requirements

• 4+ years of commercial software development experience
• Strong hands-on experience with .NET
• Strong expertise in WPF
• Solid understanding and practical experience with MVVM
• Experience working with Prism and Dependency Injection
• Strong knowledge of SOLID, Clean Code, and design patterns
• Good understanding of async/await, multithreading, and concurrency
• Strong debugging and problem-solving skills
• Experience integrating desktop applications with REST APIs and backend services
• Experience working with existing/legacy codebases and improving them
• Ability to work independently and take ownership of technical decisions
• English — B2 or higher

We Offer

• Competitive compensation
• Flexible working hours
• Remote / Office / Hybrid work options
• Technical equipment
• Professional development and Performance Appraisals
• English courses
• Health Insurance
• Online courses
• Corporate events, tech talks, and more

Deep backend expertise is required.

Core Tech Stack & Architecture

• Primary Language / Backend (90%): C# / .NET Core (Senior level)
• Architecture: Headless architecture, Microservices
• Orchestration & Cloud: Kubernetes, Cloud environments
• Frontend: Vue.js (minor client-side component)

Key Backend & Engineering Requirements

• Security: Building and securing systems handling sensitive and enterprise data.
• System Design & Optimization: High performance, scalability, and efficiency.
• Concurrent Programming: Parallel/concurrent processing.
• Memory Management: Low-level resource and proper memory management.

AI & LLM Integration Requirements

• Platforms & Tools: Amazon Bedrock, diverse AI/LLM models.
• API & Integration: Model APIs, reading documentation, and integrating new AI models.
• Operations & Cost Management: Prompts, tokens, token usage tracking, and cost optimization.
• Model Selection: Evaluating and selecting appropriate AI models based on task requirements.
• Mindset: Strong capacity and enthusiasm to learn new AI areas rapidly (deep AI expertise is secondary to strong C#/.NET foundations).

.NET Full-Stack Engineer & Microsoft Teams Audio & Communications

We’re looking for an experienced .NET Full-Stack Engineer to join a long-term product development team working on communication functionality within the Microsoft Teams ecosystem.
 

This is not a short-term integration project. You’ll be joining a stable, long-term product where Microsoft Teams communication, audio, meetings, and related data are core parts of the platform.

The role is primarily backend-focused, but you’ll also contribute to frontend functionality when needed.

What you’ll be working on

You’ll develop and maintain functionality around Microsoft Teams voice and communication workflows, including:

• Teams calls and online meetings
• Audio and communication data
• Meeting participants and call-related metadata
• Recordings and communication events
• Microsoft Graph and Graph Communications integrations
• Backend services responsible for collecting, processing, and exposing communication data
• Real-time functionality and integrations with other product components
• Supporting frontend features in React 
   

Core technologies

• C# / .NET / ASP.NET Core
• Microsoft Graph API
• Microsoft Graph Communications / Cloud Communications APIs
• Microsoft Teams APIs
• Azure
• SQL
• REST APIs
• SignalR / WebSockets
• React
   

What we’re looking for

• 5+ years of commercial C#/.NET experience
• Strong backend development experience with ASP.NET Core
• Commercial experience with Microsoft Graph
• Experience with Microsoft Teams communication APIs
• Practical experience working with Teams audio, calls, meetings, recordings, participants, or call data
• Microsoft Graph Communications / Cloud Communications APIs is a must!
• Solid SQL knowledge
• Ability to work independently with integrations and production functionality
• English B2+
   

You’ll get:

• A stable product with a long-term roadmap
• Direct cooperation with a US-based client
• Predictable, long-term workload
• Transparent compensation
• Paid vacation and sick leave
• Professional development support
• High-quality equipment
• Paid office lunches
• Anniversary gifts and baby bonus
   

Full-time · Long-term cooperation · Remote/Hybrid

Creatio Developer

Front System Team

Information Technology Department

The Front System Directorate Team is looking for a colleague for the position of Creatio Developer.

The main mission of this role is to develop critical modules in CRM Creatio and implement integration mechanisms.

What you will do:

• Full-stack development on the Creatio platform:
  • Backend: Business logic in C#, development of web services and event handlers.
  • Frontend: UI configuration (Freedom UI / Classic), client-side logic in JS.
• Implement integrations with banking systems (ABS, MConnect, Asterisk, S3).
• Develop and optimize business processes (BPMN).
• Create printed forms and reports.

• Participate in code reviews and team discussions about architecture.

   

What we are looking for:

• Excellent knowledge of C# .NET (Backend) and JS/TS.
• Commercial experience in C# .NET and T-SQL / PL-SQL development.
• At least 2 years of experience with the Creatio platform.
• Understanding of how REST/SOAP APIs work.

• Ability to understand existing code and work effectively in a team.

   

Will be an advantage:

• Experience in FinTech / banking (understanding the specifics of ABS and security requirements).
• Experience with Kafka and Redis.

• Experience in development with Freedom UI (Angular).

   

Why join us?

• High load and challenges: We are building the front system for the largest bank in the country. This is not about maintaining an old system, but about creating a new architecture from scratch (Kafka, microservices support, Modular Monolith).
• Modern technologies: No legacy, just a modern tech stack. We work with Freedom UI, CI/CD, and Docker.
• Real impact: You will directly influence how one million customers interact with the bank, not just resolve tickets.

What benefits will you have?

• An individual professional development and career advancement plan.
• Performance bonuses based on your results.
• Ongoing training to develop your professional and personal skills.
• Participation in various interest clubs and team-building activities organized by our team.
• Favorable terms on the bank's products for employees.

About the role 

We are looking for a Solution Architect to join the Lead Architect on a healthcare client engagement: first as a hands-on partner during discovery, then as the architect who owns and leads the implementation. Typical projects are modernization of medical information systems (MIS/EHR), building new digital health products and platforms, and integrating the fragmented systems of clinic and hospital networks. 

How the role evolves: 

1. Discovery: work side by side with the Lead Architect: workshops, as-is analysis, target architecture, roadmap, estimate. 

2. Implementation: take ownership of the architecture and lead the technical side of delivery within a dedicated team (Delivery Director, PM, engineers). 

    

Responsibilities 

• Co-run workshops with client business and IT; analyze the as-is landscape: systems, data flows, integrations, infrastructure, databases. 
• Own selected discovery streams end to end (e.g. integrations, data, infrastructure) and turn findings into documented decisions. 
• Co-design the target (to-be) architecture and transition strategy: build vs buy, sequencing, risks. 
• Design the integration layer / API facade over legacy systems. 
• Assess regulatory and security requirements for the client's domain (personal data, industry standards). 
• Define non-functional requirements: resilience, DR, security, scalability, cost. 
• Contribute to the roadmap, estimate, team composition and ADRs. 

Implementation (leading) 

• Own the solution architecture through delivery and keep it aligned with the discovery outcome. 
• Lead the engineering team technically: break down the architecture into epics, set standards, run design/code reviews. 
• Drive integrations, data migration and phased replacement of legacy components. 
• Coordinate with the client's IT, incumbent and 3rd-party vendors. 
• Support certifications and audits where the domain requires them. 
• Manage architectural risks and technical debt; report status and decisions to the Lead Architect and Delivery Director. 

Must have 

• 8+ years in software development, including 3+ years as a Solution / Enterprise Architect. 
• Proven experience leading implementation as an architect or tech lead: owning the architecture through delivery and guiding a team of engineers. 
• Strong knowledge of architectural patterns: microservices and modular monoliths, event-driven, CQRS, strangler fig, integration and resilience patterns. 
• Ability to create clear architecture documentation: C4 model diagrams, ADRs, solution design documents. 
• Integration architecture: REST/SOAP/gRPC APIs, API gateways, event-driven, CDC. 
• Relational databases, data modeling and migration, DWH/analytics fundamentals. 
• Cloud-native and on-prem/hybrid architecture OCI (Oracle), containers, DR and resilience. 
• Hands-on experience building AI harnesses: LLM integration, agent and tool orchestration, RAG, context management, evaluation and guardrails in production. 
• Hands-on background in at least one stack (.NET or Java) and the ability to assess others. 

Nice to have 

• Experience in healthcare IT: MIS/HIS/EHR, patient apps, health insurance integrations. 
• Healthcare standards and compliance: HL7 FHIR, national eHealth systems, medical data protection, ISO 27001. 
• Experience integrating with enterprise and third-party systems. 
• Architecture certifications (SEI, AWS/Azure Solutions Architect). 

Soft skills 

• Communicates with the client's C-level and IT leadership; explains trade-offs in business terms. 
• Works independently with incomplete information: forms hypotheses and validates them. 
• Produces structured artifacts: diagrams, ADRs, roadmaps, risk registers. Mentors engineers and builds shared ownership of the architecture

Payments are the backbone of every successful company. You can have flashy UI, adverts, events, etc. But if your users can not pay you, then it’s all for nothing. Having a smooth payment flow is a must.   Because every additional step, every issue, is a way for the user to stop and think “Do I really need it?”. 

Developing Payments product includes working closely with Finance specialists and business stakeholders and understanding what is needed for the company in your domain - adding new payment methods, improving payment flows, or switching to a new payment processor.

Most often this is not something that can be showcased, but it’s important work that the whole company is based upon.

Your expertise:

At least 7 years of software development experience

At least 2 years of experience in a lead position
Experience with React and TypeScript

Excellent knowledge of C#, .NET, .NET Core

ORM + relational databases experience (preferably Entity Framework + PostgreSQL / MSSQL)

Cloud infrastructure setup experience AWS, Azure, GCP (preferably AWS ECS, RDS, SNS / SQS)

Experience with React and TypeScript

Good experience with Integration / Unit testing

Good experience with ASP.NET Core

Experience developing microservices

Experience with Docker

Understanding of SOLID, OOP, Clean Code, GOF

Excellent communication and organization skills, product-oriented mindset, focus on team results, and leadership qualities

Understanding SDLC

Upper-intermediate or higher level of English

Will definitely be a plus:

• Experience with ElasticSearch
• Experience with Kubernetes
• Experience with Terraform
• Experience with Redis
• Experience with Mobx
• Understanding of CI / CD and experience with Jenkins and Vault
• Experience with creating solution Architecture and solving non-standard CRUD tasks

What’s in it for you?

• Opportunity to deal with top-notch technologies and approaches in a world-leader product company with millions of customers
• Opportunity to make a difference for online privacy, freedom of speech, and net neutrality
• Decent market rate compensation depending on experience and skills
• Developed corporate culture: no micromanagement, culture based on principles of truth, trust, and transparency
• “You build it, you own it” mentality in most contexts
• Support of personal and professional development
  • coverage of costs of external trainings, conferences, professional literature
  • support of experienced colleagues
  • in-house events and trainings
  • regular knowledge sharing in teams
  • English classes and speaking clubs
• Life-balance support
  • truly flexible schedule, no time-tracking at all
  • 25 working days of vacation
  • 5 days of paid sick leave per month (if necessary) without providing a medical certificate
  • generous maternity / paternity leave program
• Professionally strong environment, friendly and open atmosphere, ability to influence the product development and recognition for it

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

Requirements:

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

Responsibilities:

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

You are compatible with us if you:

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

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!

What we are looking for

Must have:

• 6+ years of commercial experience with C# / .NET
• Strong English skills — you should feel comfortable communicating with an international client and team
• Experience in migrating or upgrading solutions from Optimizely CMS 11 to CMS 13 

• We also expect you to be a really self-driven person because micromanagement and total control are not about UKAD.

   

Project technical stack:

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 CMS

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.

What we offer:

• Remote or hybrid work
• Flexible working hours. You can start your working day between 08:00 and 11:00
• Full-time employment
• Professional development and mentoring
• Support for conferences, courses, and meetups
• Equipment provided for work
• Social benefits package
• A friendly, collaborative team with minimal bureaucracy
• Challenging technical tasks and the opportunity to work with modern development and AI tools
•  Feel free to choose technologies and solutions, in which you believe, as well as to be creative and responsible for the results.

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?

As our Senior AI Engineer, you'll own the intelligence layer of the platform — the gateway, tools, retrieval, and evaluation that let an AI assistant read and act inside a regulated ERP as the signed-in user, and never as anything more. In manufacturing that answers to auditors, an assistant that's confidently wrong, or that touches a record it shouldn't, is worse than no assistant at all. Your work is making AI trustworthy enough to put in front of a quality manager.

This isn't a role for working through a queue of well-specified tickets.

 You'll take large features from a loose problem statement to production — agentic workflows, AI on mobile for the shop floor, and the system and infrastructure changes underneath them. You'll decide what to build as much as how, and you'll push for the breakthrough features that make customers switch, not only the ones already on the roadmap.

The ideal candidate thrives in startup ambiguity, moves with real urgency, and has a track record of turning open-ended problems into shipped products without waiting to be told what's next.

What You'll Do

01 — Take large features from idea to production.

Own agentic workflows and AI on mobile end to end. Start from the user's problem, shape the solution, write the plan and the tickets, build the React and mobile interfaces that make AI output trustworthy and actionable, ship it, and measure whether it worked.

02 — Make and own large system changes.

Propose, defend, and carry through the architecture and infrastructure the AI layer depends on — background agents and job queues, observability, cost metering, per-tenant limits, and model version pinning.

Required Qualifications

- 8+ years building and shipping production software, including 2+ years shipping LLM-powered features to real users, and a track record of owning large features end to end.

- AI-native engineering practice — you've rebuilt how you work around agents rather than adding them to an old workflow. Claude Cowork as your primary tool, with strong hands-on experience using Claude Code, Cursor, Codex, or similar; you direct agents through most of the implementation and stay disciplined about the quality, stability, and extensibility of what they produce.

- Product sense and ownership — you work from problems, not specs. You figure out what users and the business actually need, write your own tickets, make the call when the answer isn't obvious, and drive work to done without needing direction repeated.

- Production LLM application engineering — tool calling, structured output, prompt and context design, and streaming, with Claude, OpenAI, or similar, via AWS Bedrock or direct APIs.

- Retrieval-augmented generation in production — chunking, embeddings, and hybrid search on pgvector or equivalent, with access control enforced at retrieval time.

- Evaluation and AI security discipline — you've built eval suites that gate releases, and you design against prompt injection, data leakage through tool output, and cross-tenant access from the start.

- Strong TypeScript, React, and Next.js in production — enough to own the AI experience end to end rather than hand it off.

- Production experience with PostgreSQL — schema design, query optimization, and operating it at scale.

- Hands-on with AWS services — Bedrock, RDS, Fargate, S3, VPCs, IoT Core, DynamoDB, and related infrastructure.

- Disciplined engineering fundamentals — SOLID, DRY, and Domain-Driven Design applied to complex business domains, with unit and integration tests as part of your normal workflow.

- B.S. in Computer Science, Mathematics, Physics, Engineering, or equivalent practical experience.

Preferred Qualifications

- Early-stage startup experience — you've shipped at weekly cadence, owned outcomes rather than tasks, and built something new that changed what the product could do.

- Shipped mobile applications — React Native or similar — for field, operator, or shop-floor use.

- Experience building manufacturing software or Industrial IoT systems — ERP, MES, or SCADA platforms, or machine connectivity over MQTT, OPC-UA, or similar.

- Hands-on with the Model Context Protocol — MCP servers or clients, and OAuth 2.1 authorization for agents.

- C# / .NET experience, as our core services move to a C# and AWS architecture.

- Exposure to compliance frameworks such as SOC 2, GAMP 5, ISO 13485, 21 CFR Part 11, or similar.

Readiness to work from 16:00 till 01:00 in order to have an optimal overlap of work hours with USA based teams.