Jobs C# / .NET

Job Title: Senior .NET / C# Developer (MetaTrader 5 Integration & Power Platform)
Company: VCG Tech Limited
Location: Remote (Global)
Employment Type: Full-Time

Role Purpose

You will own the integration connector that links our trading platform to the backend systems powering our introducing-broker and partner program. This connector is the source of truth for moving trading and account data out of MetaTrader 5 and into the services that calculate and present partner activity, so its correctness, latency, and resilience directly shape what partners see and how they are rewarded. When this layer is reliable, the rest of the partner experience simply works; when it is not, the impact is immediate and visible, which is why this is a senior, ownership-heavy role.

Day to day you will design, build, and harden .NET/C# services that synchronise data between MetaTrader 5 and our backend, expose it cleanly to the partner platform, and stay healthy under production load. You will work closely with a primarily Java microservices backend team, agreeing on contracts and integration patterns across language boundaries, and partner with product and operations to keep data flows accurate and observable. You will work remotely within a focused product team and be expected to lead technically on everything connector-related, from design through production support. Beyond the connector, you will also extend our Power Platform (Dataverse) CRM with custom C# plugins, applying your .NET skills across both the trading-integration and CRM sides of the platform.

Key Responsibilities

Build and Own the Integration Connector

• Design and maintain .NET/C# services that synchronise trading and account data between MetaTrader 5 and backend systems
• Keep data flows accurate, idempotent, and consistent across sources, handling reconciliation and replay where needed
• Expose clean, well-versioned interfaces so the partner platform can consume trading and account data reliably
• Own the connector end to end, from design and implementation through deployment and production support

Reliability and Resilient Processing

• Engineer for production load with backpressure, retries, timeouts, and graceful degradation
• Implement asynchronous and message-based processing that recovers cleanly from failures and partial outages
• Establish safeguards against data loss, duplication, and drift between MetaTrader 5 and downstream systems
• Diagnose and resolve production incidents, then close gaps with durable fixes and follow-up improvements

Observability and Operations

• Instrument services with metrics, structured logging, and tracing so behaviour is transparent in production
• Define meaningful alerts and dashboards that surface integration health before users feel the impact
• Track latency, throughput, and error budgets, and act on the signals they reveal

Power Platform / Dataverse Plugins

• Build and maintain custom C# plugins for our Power Platform (Dataverse / PowerApps) CRM — server-side business logic, validation, and automation triggered by CRM events
• Integrate the CRM with trading, partner, and payment data so records stay accurate and actionable
• Package, register, and version plugin assemblies and support them to production with the same reliability bar as the connector

Cross-Team Integration and Quality

• Collaborate with a primarily Java backend team to agree on contracts, integration patterns, and data ownership
• Align on REST and messaging conventions that work cleanly across .NET and Java services
• Uphold engineering quality through tests, code review, and CI/CD pipelines
• Document integration behaviour and operational runbooks for the wider team

Required Experience & Skills

• Strong professional experience building production services in .NET / C# (modern .NET)
• Experience building C# plugins for Microsoft Power Platform / Dataverse (PowerApps), or strong server-side C# experience with the readiness to own Dataverse plugin development
• Proven track record designing and operating system-to-system integrations and connectors
• Depth in integration patterns using REST APIs and/or message-based, event-driven processing
• Solid SQL and relational database skills, including modelling for synchronisation and reconciliation
• Hands-on experience with asynchronous and reliable processing: retries, idempotency, backpressure, and failure recovery
• Demonstrated ownership of reliability and observability in production, using metrics, logging, and tracing
• Experience running services on AWS as the primary cloud, including containerised workloads
• Comfort collaborating across language boundaries with a primarily Java backend team
• Strong debugging and incident-resolution skills under production conditions
• Senior-level judgement on design trade-offs, with the autonomy to own a component end to end

Nice to Have

• Experience with the MetaTrader 5 Manager / Gateway API
• Hands-on experience administering or managing a Power Platform / PowerApps (Dataverse) CRM — solutions, model-driven apps, security roles, and Power Automate flows — is a strong plus
• Background in trading, brokerage, or CFD/FX fintech
• Experience integrating .NET services with Java microservices in production
• Familiarity with Docker and Kubernetes for packaging and running services
• Working knowledge of observability tooling such as Grafana, Prometheus, or CloudWatch
• Exposure to infrastructure as code with Terraform
• Experience with CI/CD pipelines and Git-based workflows
• Familiarity with introducing-broker or partner / affiliate program domains

WHAT YOU’LL DO

• Design and build RESTful APIs and integration services between internal products and third-party systems.
• Working with Legacy code.
• Designing end-to-end features.
• Develop integration strategies that reduce complexity and improve maintainability.
• Monitor, test, and troubleshoot API transactions and workflows.
• Collaborate with Product Owners and Engineers to refine technical requirements.
• Maintain strong documentation of APIs and integration patterns.
• Ensure integrations meet compliance, performance, and security standards (e.g., GDPR, PCI).
• Participate in Agile Scrum ceremonies and contribute to sprint planning and delivery.
• Track your work in Azure DevOps.

REQUIREMENTS

hard skills:

• Upper-Intermediate English level.
• 4+ years of experience with .Net development.
• Solid experience with .Net Framework, .Net Core, and C# for backend service development.
• Experience with modern frontend frameworks such as React and Angular.
• Familiarity with API security standards and authentication flows.
• Proficiency with MS SQL.
• Experience with Microsoft Azure.
• Familiarity with Jira, Agile/Scrum teams and modern DevOps practices.
• Strong communication and troubleshooting skills.

Need to be comfortable with AI-driven development using Claude Code.

soft skills:

• Strong problem-solving skills.
• Good communication skills.
• Attention to detail.
• Customer service mindset.

WE OFFER:

• Fully remote work in a high proficiency team.
• Long-term employment, the average duration of work of our employees is 5+ years.
• 17 days of annual paid vacation and holidays.
• 10 days of paid sick leaves, without a doctor’s statement.
• Free online English classes for all employees.

We are looking for a Technical Lead / Lead Backend Developer (.NET) to join our growing team, working on a long-term engagement on an enterprise SaaS project specializing in Microsoft 365 governance.

DARLY SOLUTIONS is an international software development company delivering custom solutions across FinTech, MedTech, SaaS, AI, and other industries. Since 2018, we've successfully delivered 250+ projects for clients worldwide. 

Requirements:

• Strong backend engineering background in .NET / C#
• Proven leadership / team lead experience - able to guide and support a team of senior developers, not just strong individual technical skills
• Real, hands-on experience with the Microsoft ecosystem: Microsoft 365, Microsoft Graph, SharePoint, Microsoft Teams, Azure
• Experience working with GitHub-based workflows
• Experience building or maintaining complex B2B SaaS platforms
• Strong sense of responsibility and proactivity
• Comfortable working directly with engineering leadership on the project side
• Open-minded and receptive to feedback, collaborative and non-defensive in working style
• B2 English 
   

Your key accountabilities and responsibilities will include:

• Lead and mentor a team of 2 senior backend developers
• Structure and prioritize backend engineering work, review technical decisions and architecture
• Act as the main technical point of contact for the project's Head of Engineering / Engineering Manager
• Drive backend development for complex B2B SaaS features: API integrations, automation, rule-based systems, admin dashboards, analytics/reporting, access control and audit logging
• Contribute hands-on to backend development as needed
• Help the team integrate smoothly into the project's existing engineering workflow and product development process
• Communicate progress, risks, and technical decisions clearly to project stakeholders

Will be a plus:

• Experience with SharePoint or Teams customizations and compliance/governance tooling
• Experience working in outsourcing/outstaffing engagements with European clients
   

If you have what we are looking for and would love to join our Darly team, we want to hear from you!

We are looking for a Senior Backend Developer (.NET) to join our growing team, working on a long-term engagement on an enterprise SaaS project specializing in Microsoft 365 governance.

DARLY SOLUTIONS is an international software development company delivering custom solutions across FinTech, MedTech, SaaS, AI, and other industries. Since 2018, we've successfully delivered 250+ projects for clients worldwide. 

Requirements:

• 4-5+ years of commercial backend development experience
• Strong, independent backend engineering skills in .NET / C#
• Real, hands-on experience with the Microsoft ecosystem: Microsoft 365, Microsoft Graph, SharePoint, Microsoft Teams, Azure
• Experience working with GitHub-based workflows
• Experience building or maintaining complex B2B SaaS platforms
• Strong sense of responsibility and proactivity
• Able to take ownership of tasks and move them forward with minimal guidance
• Open-minded and receptive to feedback, collaborative and non-defensive in working style

• B2 English 

   

Your key accountabilities and responsibilities will include:

• Take ownership of backend tickets and move them forward independently
• Contribute to ongoing product development, not just isolated task execution
• Build and maintain backend features for a complex B2B SaaS platform: API integrations, automation, rule-based systems, admin dashboards, analytics/reporting, access control, audit logs, and compliance/governance workflows
• Work closely with the Technical Lead and the rest of the engineering team

• Integrate into the project's existing engineering workflow and contribute to long-term product evolution

   

Will be a plus:

• Experience with SharePoint or Teams customizations and compliance/governance tooling

• Experience working in outsourcing/outstaffing engagements with European clients

   

If you have what we are looking for and would love to join our Darly team, we want to hear from you!

We are looking for a Senior Backend Developer (.NET) to join our growing team, working on a long-term engagement on an enterprise SaaS project specializing in Microsoft 365 governance.

DARLY SOLUTIONS is an international software development company delivering custom solutions across FinTech, MedTech, SaaS, AI, and other industries. Since 2018, we've successfully delivered 250+ projects for clients worldwide. 

Requirements:

• 4-5+ years of commercial backend development experience
• Strong, independent backend engineering skills in .NET / C#
• Real, hands-on experience with the Microsoft ecosystem: Microsoft 365, Microsoft Graph, SharePoint, Microsoft Teams, Azure
• Experience working with GitHub-based workflows
• Experience building or maintaining complex B2B SaaS platforms
• Strong sense of responsibility and proactivity
• Able to take ownership of tasks and move them forward with minimal guidance
• Open-minded and receptive to feedback, collaborative and non-defensive in working style

• B2 English 

   

Your key accountabilities and responsibilities will include:

• Take ownership of backend tickets and move them forward independently
• Contribute to ongoing product development, not just isolated task execution
• Build and maintain backend features for a complex B2B SaaS platform: API integrations, automation, rule-based systems, admin dashboards, analytics/reporting, access control, audit logs, and compliance/governance workflows
• Work closely with the Technical Lead and the rest of the engineering team

• Integrate into the project's existing engineering workflow and contribute to long-term product evolution

   

Will be a plus:

• Experience with SharePoint or Teams customizations and compliance/governance tooling

• Experience working in outsourcing/outstaffing engagements with European clients

   

If you have what we are looking for and would love to join our Darly team, we want to hear from you!

We are looking for an experienced .NET Engineer to join our team and work on a healthcare research portal, following best Agile practices (two-week sprints, code review, daily standups).

You'll design, build, and own backend services on a modern .NET 10 stack running in Azure, working across the full lifecycle — from architecture and design through implementation, deployment, and production support. This is a hands-on role: you'll spend most of your time writing and reviewing code, but you'll also shape technical decisions, drive best practices, mentor other engineers, and partner closely with product, architecture, and other engineering teams.

About the Project

The project we are working on is a web-based application with over 25,000 current users, developed for the entire research community to review, monitor, and manage research portfolios. The main goal of the project is to unite distributed and complex organizational processes into one application and help alleviate administrative burdens.

A key focus of this role is modernizing this complex enterprise system — updating its architecture, platform, and data foundations to make it AI-ready and enable future AI-driven capabilities.

Requirements:

• 5+ years of professional software engineering experience, with strong proficiency in C# and the .NET platform (.NET Core / .NET 5+; .NET 10 a plus).
• Deep experience building backend services with ASP.NET Core.
• Strong SQL Server skills: schema design, complex queries, and query performance tuning. Experience with Azure SQL Managed Instance is a strong plus.
• Hands-on experience deploying and operating applications on Microsoft Azure.
• Solid grasp of asynchronous programming (async/await), dependency injection, and the ASP.NET Core request pipeline.
• Experience with Entity Framework Core, including migrations and performance tuning.
• English — Upper Intermediate or above
  
   

Will be a plus:

• Frontend or full-stack experience with React (a strong plus); experience with Blazor or Angular is also welcome.
• Observability: structured logging, distributed tracing, and metrics.

Responsibilities:

• Design, architect, and implement high-performance, scalable, and secure enterprise applications using the modern .NET ecosystem (e.g., .NET 8/10, ASP.NET Core).
• Architect and optimize database schemas, write complex queries, and manage data persistence using SQL Server, alongside ORMs like Entity Framework Core
• Establish development patterns and standards that enable AI empowered development across the platform.
• Lead and participate in rigorous peer code reviews to ensure adherence to coding standards, security protocols, and best practices
• Coach, mentor, and guide junior and mid-level developers, fostering a culture of continuous learning and technical growth within the team.
• Collaborate closely with Product Owners, Business Analysts, Scrum Masters, and UI/UX designers to translate complex business requirements into clear technical specifications
• Serve as an escalation point for complex production issues; perform root-cause analysis and implement long-term stability fixes.
• Set up and monitor system health, logging, and observability metrics using tools like Application Insights, ELK stack, Datadog, or Prometheus.

Наш клієнт, Growe, провідна консалтингова компанія та група сервісів у сфері iGaming і розваг. Вони створюють стратегії, що працюють, та рішення, які масштабуються. Поєднуючи стратегічне бачення з практичним досвідом, Growe допомагає бізнесам орієнтуватися в динамічній індустрії, відкривати нові можливості, виходити на нові ринки та досягати сталого зростання.

Ідеально для тих, хто прагне:

• Писати чистий, читабельний код;
• Виконувати як прості, так і складні ініціативи;
• Брати відповідальність за отримані завдання;
• Координувати взаємодію між командами в межах робочих задач.

Досвід, який стане твоєю перевагою:

• 4+ роки досвіду з .NET (C#) у продакшн-системах;
• Сильний досвід роботи з ASP.NET Core Web API та проєктування RESTful API;
• Глибоке розуміння HTTP (таймаути, повторні спроби, ідемпотентність, статус-коди);
• Досвід інтеграції із зовнішніми API;
• Вміння проєктувати інтеграційні шари та модульні системи (clean architecture / onion / прагматичне шарування);
• Глибоке розуміння мікросервісів та архітектури розподілених систем;
• Досвід асинхронної взаємодії та event-driven архітектури;
• Ґрунтовні знання реляційних баз даних (SQL, транзакції, індекси, оптимізація продуктивності);
• Досвід написання unit- та integration-тестів;
• Розуміння автентифікації та авторизації (OAuth 2.0, OpenID Connect).

Ми цінуємо:

• Відповідальність за результат;
• Сильні навички міжкомандної взаємодії;
• Проактивний та відповідальний підхід до роботи;
• Мислення та комунікація на рівні senior-спеціаліста.

Наші клієнти пропонують конкурентні переваги для підтримки вашого професійного та особистого зростання, зокрема:

• Орієнтація на здоров’я та добробут;
• Глобальне медичне страхування;
• Можливості для зростання;
• Програми бенефітів (компенсація спорту / стоматології / психолога тощо);
• Бонуси за досягнення результатів;
• Динамічне робоче середовище.

Долучайся — і нехай твоя історія зростання розпочнеться.

English version

Our client, Growe, is a leading business advisory and services group in iGaming and Entertainment. Сreators of strategies that work and solutions that scale. Combining strategic vision with hands-on expertise, Growe helps businesses navigate the fast-evolving industry, seize new opportunities, enter new markets, and achieve sustainable growth.

Perfect for those who aim to:

• Write clean, readable code;
• Execute both trivial and non-trivial initiatives;
• Take ownership of the received initiative;
• Coordinate cross-team interactions within the framework of task work.

Experience you’ll need to bring:

• 4+ years with .NET (C#) in production systems;
• Strong experience with ASP.NET Core Web API and RESTful API design;
• Strong understanding of HTTP semantics (timeouts, retries, idempotency, status codes);
• Experience with external API integration;
• Ability to design integration layers & modular systems (clean architecture / onion / pragmatic layering);
• Deep understanding of microservices and distributed systems architecture;
• Experience with asynchronous communication and event-driven architecture;
• In-depth knowledge of relational databases (SQL, transactions, indexing, performance tuning);
• Experience writing unit and integration tests;
• Understanding of authentication and authorization (OAuth 2.0, OpenID Connect).

It’s a perfect match if you have those personal features:

• Ownership and accountability;
• Strong cross-team collaboration skills;
• Proactive and responsible approach to work;
• Senior-level mindset in decision-making and communication.

Our clients offer competitive benefits to support your professional and personal growth, including:

• Health & Wellness Focus;
• Global Medical Coverage;
• Growth Opportunities;
• Benefits Programs (compensation for the gym/stomatology/psychological service & etc.);
• Performance-Driven Rewards;
• Dynamic Work Environment.

Apply, and let your growth journey begin.

Our client is a US-based remote-online-learning provider serving students through live digital instruction and operational student-support workflows. Together with Nucleus AI, the client is building the CCA Wellness Check Compliance Platform — a focused internal system for recording, tracking, and proving weekly student wellness checks.

The platform is designed to solve a concrete compliance and operations problem: the school needs a reliable way to confirm that weekly student wellness checks happened, maintain an auditable record, identify students who were not seen, and support escalation workflows when follow-up is required.

The MVP is time-sensitive and must be production-ready before the August teacher training window and September operational launch.

You’ll join a delivery team building a practical compliance platform from the ground up, working closely with product, engineering, QA, delivery, and client stakeholders.

Responsibilities

Fullstack Product Development

• Build and maintain end-to-end product features across backend services and frontend application layers.
• Work with frontend frameworks such as React, Angular, or Blazor to deliver user-facing functionality.
• Integrate frontend applications with backend APIs and ensure smooth client-server communication.
• Debug issues across the full application stack, including frontend behavior, API contracts, backend logic, database interactions, and deployment environments.
• Collaborate with product, design, frontend, backend, and AI/ML teams to translate requirements into working product features.
• Ensure frontend and backend changes are aligned, tested, and production-ready.

Backend Development & Architecture

• Design and build scalable backend services using .NET Core / .NET Framework.
• Develop RESTful APIs and microservices using ASP.NET Core.
• Apply clean architecture principles and enforce coding standards.
• Ensure systems are performant, secure, and maintainable.

Cloud & Infrastructure

• Build and operate services on Microsoft Azure, including App Services, Functions, Azure SQL, and AKS.
• Implement CI/CD pipelines using Azure DevOps or GitHub Actions.
• Work with containerized environments such as Docker and Kubernetes.
• Ensure system reliability, monitoring, and disaster recovery strategies.

Code Quality & Performance

• Conduct code reviews and enforce best practices across backend and frontend codebases.
• Implement unit, integration, and end-to-end testing where appropriate.
• Monitor, profile, and optimize system performance across application layers.

Security & Compliance

• Implement secure authentication and authorization using OAuth, JWT, or similar approaches.
• Follow OWASP best practices.
• Ensure data protection and system integrity.

Documentation & Improvement

• Document technical decisions, API contracts, system behavior, and development workflows.
• Continuously improve system design and development workflows.
• Stay current with .NET, frontend, and cloud ecosystem developments.

Requirements

• 5+ years of professional engineering experience, with strong commercial experience in .NET / C#.
• Strong experience with ASP.NET Core, Web API, Entity Framework, and SQL Server.
• Hands-on frontend experience with React, Angular, Blazor, or a comparable modern frontend framework.
• Ability to build fullstack features from database and backend logic through API design and frontend implementation.
• Experience integrating frontend applications with REST APIs and debugging client-server issues.
• Hands-on experience with Microsoft Azure.
• Experience with CI/CD pipelines and Git.
• Experience with Docker and Kubernetes.
• Strong understanding of SDLC, SOLID, and design patterns.
• Experience with unit testing frameworks such as xUnit, NUnit, or MSTest.
• Ability to debug and resolve complex issues across the full application stack.
• Strong communication skills and ability to work closely with cross-functional teams.
   

Nice to Have

• Experience with React or AngularJS.
• Experience with messaging systems such as RabbitMQ, Kafka, or Azure Service Bus.
• Familiarity with NoSQL databases such as Cosmos DB or MongoDB.
• Azure certifications.
• Experience in LMS, edtech, legal-tech, fintech, or data-heavy platforms.
• Experience working with AI-assisted systems, AI/ML integrations, or data-driven product features.

What Matters for This Role

• Ownership mindset — ability to take responsibility for features and systems end-to-end.
• Strong backend engineering foundation combined with practical frontend delivery skills.
• Comfort working in ambiguous, fast-moving environments.
• Strong engineering judgment and pragmatic decision-making.
• Ability to collaborate across backend, frontend, cloud, product, and AI/ML teams.

Hello! 
 

We are looking for an experienced Senior .NET Developer to take ownership of our OMS (Order Management System), Hub API infrastructure, and core backend services supporting mission-critical trading operations.

Responsibilities

• Develop, maintain, and improve backend services using C# and .NET.
• Support and evolve OMS, Hub API infrastructure, and related backend systems.
• Design scalable, high-availability APIs and distributed services.
• Manage AWS infrastructure, Docker environments, and deployment processes.
• Troubleshoot production issues and implement long-term solutions.
• Improve monitoring, logging, alerting, and system observability.
• Support broker, exchange, market data, and third-party integrations.
• Participate in architecture discussions, code reviews, and technical decision-making.

• Mentor team members and contribute to engineering best practices.

   

Requirements

• 8+ years of professional software engineering experience.
• 5+ years of experience designing, maintaining, and supporting large-scale production systems.
• Expert-level C# and ASP.NET experience.
• Deep understanding of distributed systems architecture.
• Strong AWS infrastructure experience.
• Strong Docker experience.
• Experience with Redis and high-performance caching systems.
• Experience designing REST APIs and service-oriented architectures.
• Experience with CI/CD pipelines and deployment automation.
• Experience supporting systems with strict uptime and reliability requirements.
• Experience leading technical design decisions and architectural reviews.
• Experience conducting code reviews and enforcing engineering standards.
• Strong troubleshooting, debugging, and production support skills.
• Strong communication, organizational, and problem-solving abilities.

• High level of ownership, accountability, and proactive decision-making.

   

Nice to Have

• Trading platform experience.
• OMS experience.
• Broker connectivity experience.
• Market data infrastructure experience.
• Financial technology experience.
• Real-time messaging systems experience.
• Multi-threaded and low-latency systems experience.
• Exchange connectivity experience.
• Experience working with algorithmic trading systems.

• Experience supporting mission-critical financial infrastructure.

   

Work Environment

• Fully remote, full-time position.
• Working hours aligned with U.S. Eastern Time.
• Fast-paced environment with significant technical ownership and responsibility.
   

Inviting Senior .NET Software Engineer to join a growing account in the medical devices industry domain. Our client is the global leader company of healthcare solutions, which contributes to human welfare by application of biomedical engineering in the research, design, manufacture, and sale of instruments or appliances that alleviate pain, restore health, and extend life for people around the world.

Our team is focusing on designing, developing, and testing embedded software for medical devices, where the software has strong restrictions for safety and quality, power management, and memory usage. Project for this position intends to extend medical device capabilities with PC application that will serve cloud services connectivity for existing device.

Job Description

• 4+ years of experience in C# application development
• Experience with AWS / Azure microservices and contenerisation
• Nice to have experience in Windows standalone appplication development
• Services integration experiences
• Upper-Intermediate English (be able to communicate with the client)
• Good communication skills
   

Job Responsibilities

• Design and development of standalone application that connects and uses AWS & Azure based services
• Develop AWS services
• Coopeare on architecture design
• Participate in new features implementation
• Communicate with the client

On behalf of our Client from France, Mobilunity is looking for .Net Engineer.
 

Our client is a table management software and CRM that enables restaurant owners to welcome their customers easily. The app is useful to manage booking requests and register new bookings. You can view all your bookings, day after day, wherever you are and optimize your restaurant’s occupation rate. Our client offers a commission-free booking solution that guarantees freedom above all. New technologies thus become the restaurateurs best allies for saving time and gaining customers while ensuring a direct relationship with them.
 

What you will do:

• Performance and stability work: Identify and resolve issues currently degrading the platform — missing or wrong SQL indexes on hot tables, N+1 Cosmos queries, EF Core query plans that fall off the optimiser, queue back-pressure, retry storms.
• Incident response: Act as the escalation point for the product support and dev team. Diagnose and fix issues spanning bookings, widgets, payments (Mollie / Bancontact / iDEAL), webhooks, SignalR notifications, Cosmos DB content, and SQL Server data.
• Production stewardship: Plan and execute releases to production, typically out of customer hours (releases usually go out late evening or around 2 a.m. CET to minimise blast radius). Own rollback strategies and smoke tests.
• Platform upgrade: Plan and execute upgrades to .NET, key NuGet packages (including private feeds), Azure services, and third-party integrations — without disrupting production.
• Targeted feature development: Pick up scoped backend features and changes and ship them safely.
• Internal tooling: Maintain and extend admin site
• Knowledge transfer: We want this role to actively reduce single-point-of-failure risk. You’ll pair with internal engineers, walk them through the system as you fix things, and leave behind enough context — in code comments, PR descriptions, short notes — that the platform is operable when you’re on holiday.
   

Tech Stack:

• .NET / C# (modern versions), Entity Framework Core, ASP.NET Web APIs
• Azure — App Service, Functions, SignalR Service, Service Bus / queues, Application Insights
• SQL Server (Azure SQL) with EF Core, plus direct query and index tuning
• Cosmos DB
• GitHub (Actions, private NuGet feeds), pre-prod and prod environments
• Mollie payments (Bancontact, iDEAL, cards) and other third-party integrations
   

Requirements:

• Deep Azure production ownership — ideally 8+ years where both the application layer and the cloud infrastructure are your domain. Azure is not a deployment target here — it’s part of the system you own.
• Strong DBA instincts. You can read an execution plan, recognise when EF Core is generating something the optimiser can’t use, and design indexes that match access patterns.
• Azure platform depth. Hands-on production experience with App Service / AKS, Azure SQL, Cosmos DB, Service Bus, Application Insights, and Key Vault. You know how to right-size resources, contain costs, and respond to platform-level incidents — not just application-level ones.
• Production maturity. Comfortable owning overnight releases, rollback plans, and the weight of a system where mistakes affect real restaurants in the morning service.
• Diagnostic mindset. At home in Application Insights, SQL DMVs, Cosmos metrics, and logs. Able to find root causes in a codebase you didn’t write, with significant historical complexity.
• Genuine AI-assisted developer. You use Claude Code, Cursor, Copilot, or equivalent daily — not occasionally. You know where the guardrails matter in a complex codebase, and you bring that judgment, not just the tool.
• Communication. Clear written English, transparent about risk, comfortable explaining technical trade-offs to non-technical stakeholders.
• Upper-intermediate to advanced English proficiency
   

Nice to have:

• Experience with restaurant tech, reservation systems, or any high-concurrency consumer-facing platform with payment flows.
• Experience leading the stabilisation or modernisation of a legacy .NET codebase.
• Familiarity with Mollie or similar PSPs and EU payment methods (Bancontact, iDEAL, SEPA).
   

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
   

Come on board, and let’s grow together!

Проєкт комерційних закупівель компанії E-Tender запрошує в свою Команду Full Stack Developer`а, яка/ий підсилить технічну команду та працюватиме над  розвитком платформи комерційних закупівель.

 Requirements: 

• 2+ years experience 
• C#; .NET Framework; 
• ASP.NET MVC + Web API; 
• Entity Framework; 
• MS SQL Server + SQL Profiler; 
• Message queues(Preffered RabbitMQ Masstransit); 
• Elasticsearch; 
• Angular 2+; 
• Angular centralized state management / ReactiveX / NgRx / RxJS; 
• Git; 
• Javascript/TypeScript + DOM; 
• HTML, CSS, SASS; 
• Experience with Jira or other project management systems, use Time Tracker. 

Responsibilities: 

• Implementation of new features of company projects in a timely and professional manner; 
• Close cooperation with project team members; 
• Use Jira, Time tracker; 
• Perform other related duties as required; 
• Front end/back end 50/50. 

Are you a Senior Full-Stack Developer looking to work on impactful projects in the automotive industry? Join Sigma Software and contribute to cutting-edge solutions that help prevent production faults before they happen.

This is a Senior role with a Remote work format, offering full-time engagement and direct collaboration with Customer teams. At Sigma Software, we value innovation, ownership, and engineering excellence — and we’ve been delivering high-quality solutions for over 20 years.

Why join us? You’ll work with a modern tech stack, cloud-native environments, and AI-assisted development tools, all while contributing to solutions that make a real difference in production quality.
 

CUSTOMER
Our Customer is a well-known German automotive manufacturer with a global presence and a strong reputation for innovation, quality, and engineering excellence. Sigma Software has been collaborating with this Customer for over five years, delivering high-impact software solutions that support their production processes and operational efficiency.
 

PROJECT
The engagement involves three interconnected web-based solutions. The primary system aggregates data from multiple Customer systems, processes it, and transforms it into actionable insights. This data — covering organizational, technical, and operational aspects — is used preventively to detect and address potential faults in automotive production lines. In case of a fault, the system provides detailed information to facilitate root cause analysis.

Responsibilities 

• Work directly with Customer engineering and product teams to understand business needs, clarify requirements, and propose effective technical solutions
• Take ownership of end-to-end feature delivery from technical analysis and design to implementation, testing, and production support
• Design, develop, and maintain high-quality full-stack solutions using .NET, React.js, and cloud technologies
• Participate in architecture discussions, technical decision-making, and delivery planning
• Identify and recommend technical improvements, risk mitigation strategies, and optimization opportunities
• Develop scalable, reliable, and maintainable applications following engineering best practices
• Work with containerized environments and Kubernetes-based deployments
• Apply AI-assisted development approaches to improve productivity and code quality
• Collaborate closely with distributed teams (developers, QA, product owners, architects)
• Contribute to code reviews, technical documentation, and knowledge sharing
• Maintain transparent communication and strong alignment with Customer expectations

Requirements

• At least 5 years of professional software development experience
• Strong hands-on expertise with .NET / C# and modern web technologies
• Proven background in complex business domains and large-scale enterprise applications
• Solid experience with ASP.NET Core / Web API, Entity Framework Core, database design, and optimization
• Strong front-end skills with React.js, Redux, Material UI, TypeScript, and modern JavaScript practices
• Practical experience with cloud platforms (AWS, Azure, GCP)
• Knowledge of CI/CD processes, automated delivery pipelines, and code quality practices
• Experience working with containerized environments and Kubernetes
• Familiarity with AI-assisted development tools and practices
• Good understanding of software architecture principles, design patterns, and clean code
• Experience working in Agile teams

• Upper-Intermediate English level or higher

   

Personal profile

• Proactive, ownership-driven, and capable of working independently
• Strong analytical and problem-solving skills
• Comfortable collaborating with distributed, cross-functional teams
• Adaptable to changing requirements and priorities

Description

Our Client is a major provider of software and framework solutions for clinical trials for Pharma Companies. Many years of experience on the market and proprietary techniques and approaches allow for building cutting-edge solutions, which mitigate the trial risks and increase the potential and the success of the study results

Requirements

1. 5+ years of commercial experience working with primary technology stack: .NET Framework / .NET Core and Angular
2. Experience in database design and elaboration for complex systems
3. Experience in the development of scalable web applications. Practice in web application deployment
4. Solid understanding of the design and architectural patterns
5. Upper-Intermediate level of written and spoken English
6. Experience with Azure infrastructure will be a plus

Job responsibilities

1. Implement new features, unit tests, automated integration tests for the complex healthcare system
2. Participate in estimation and planning sessions
3. Investigate different complexity issues and debug code
4. Research architecture solutions for new features and refactoring of existing ones
5. Mentor and guide junior grades
6. Business communication and close collaboration with customer on a daily basis
7. Build work around the principles of the multicultural distributed team

Description

Our Client is a major provider of software and framework solutions for clinical trials for Pharma Companies. Many years of experience on the market and proprietary techniques and approaches allow for building cutting-edge solutions, which mitigate the trial risks and increase the potential and the success of the study results

Requirements

1. 3+ years of commercial experience working with primary technology stack: .NET Framework / .NET and Angular
2. Experience in database design and elaboration for complex systems
3. Experience in the development of scalable web applications. Practice in web application deployment
4. Solid understanding of the design and architectural patterns
5. Upper-Intermediate level of written and spoken English
6. Experience with Azure infrastructure will be a plus

Job responsibilities

1. Implement new features, unit tests, automated integration tests for the complex healthcare system
2. Participate in estimation and planning sessions
3. Investigate different complexity issues and debug code
4. Research architecture solutions for new features and refactoring of existing ones
5. Mentor and guide junior grades
6. Business communication and close collaboration with customer on a daily basis
7. Build work around the principles of the multicultural distributed team