Jobs C# / .NET

Position overview
As a Senior .NET Engineer on the Fintech Core project, you will drive the development of key product modules within a modular white-label fintech platform designed for rapid deployment of digital banking and payment solutions. You will take ownership of technical implementation, architectural decisions, integration approaches, and engineering quality within one of the platform’s major client deployments.
 

The role requires deep expertise in backend engineering, distributed systems, and fintech integrations, with strong focus on scalability, reliability, security, and maintainability. You will work closely with Architects, Product Owners, DevOps Engineers, and cross-functional development teams to design and implement high-performance microservice-based solutions that support complex financial operations.
 

This position is ideal for a proactive and technically strong engineer with hands-on experience in fintech or banking systems, who is capable of leading module-level development initiatives, mentoring engineers, and driving engineering excellence across the project.

Your Background

-5+ years of experience with .NET backend development
-Experience with fintech, banking, or payment systems
-Strong understanding of microservices architecture
-Experience with ASP.NET Core, REST APIs, and gRPC
-Hands-on experience with Docker and Kubernetes
-Experience with PostgreSQL, Redis, MongoDB, RabbitMQ, Kafka
-Strong knowledge of software architecture and clean coding principles
-Experience with AWS is a plus
-English level (Upper-Intermediate.)

Responsibilities

-Develop and maintain scalable backend services using .NET and ASP.NET Core
-Design and support microservice-based solutions
-Develop REST APIs and gRPC integrations
-Collaborate with DevOps and cross-functional teams
-Ensure system reliability, scalability, and code quality
-Participate in architecture and technical decision-making

Technologies

.NET 10, ASP.NET Core, gRPC, Entity Framework Core, PostgreSQL, RabbitMQ, Docker, Kubernetes, OpenTelemetry, Prometheus, Serilog, AWS, GitHub Actions

WE OFFER 
-20 billable days off in the first year of cooperation, all next years — 25 billable days off 
-Fair and competitive compensation 
-Friendly team and enjoyable working environment 
-Clearly described business processes in the company that really work -Regular updates on company news and Q&A sessions with top management 
-Flexible work schedule 
-Remote work mode 
-Ability to transfer unused vacation days to the next year

We are looking for an experienced Lead/Senior .NET Engineer to join a long-term modernization initiative focused on transforming a large-scale enterprise platform from .NET Framework 4.8 to .NET 10. This is a hands-on engineering role where you'll work on modernizing backend architecture, migrating legacy components, improving code quality, and preparing the platform for cloud-native deployment on AWS. You'll collaborate with experienced engineers in an Agile environment while helping shape the future architecture of a mission-critical system.

Responsibilities: 

• Drive the migration of a large enterprise application from .NET Framework 4.8 to .NET 10.
• Modernize backend services and replace legacy Windows-specific dependencies with cross-platform solutions.
• Migrate a large Entity Framework 6 data model to EF Core 8, one bounded context at a time.
• Refactor legacy code following modern architecture principles and best engineering practices.
• Improve automated testing by introducing unit test coverage and quality gates.
• Collaborate with DevOps engineers on containerization, Docker configuration, and AWS deployment.
• Participate in architecture discussions, code reviews, technical planning, and Agile ceremonies.

Requirements:

• 5+ years of commercial experience with C#/.NET backend development.
• Strong expertise with ASP.NET, ASP.NET Core, and modern .NET.
• Proven commercial experience migrating applications from .NET Framework to .NET Core / .NET 8+.
• Strong experience with Entity Framework Core.
• Good understanding of DDD, CQRS, and layered architecture.
• Experience building containerized applications using Docker.
• Solid knowledge of xUnit, Moq, and automated testing practices.
• Experience deploying .NET applications to AWS ECS/Fargate and working with ECR.
• Experience with RabbitMQ, MassTransit, or similar messaging technologies.
• Experience with Hangfire or other background job processing frameworks.
• Strong Git workflow and experience working in Agile teams.

Nice to have:

• Experience designing and maintaining CI/CD pipelines.
• Familiarity with Angular applications or micro-frontend architecture.
• Experience implementing automated code coverage in CI.
• Knowledge of performance optimization and scalable distributed systems.

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

About Us

We are a US-founded early stage start-up with an R&D team located in Europe. Our mission is to make learning accessible, relevant, and individualized to keep up with the changing world. We are developing a personalized virtual trainer experience, integrating generative AI and learning engineering to build a VR simulator for immersive hands-on skills training. Our learning engineering approach customizes content and feedback in real-time, directly improving learning outcomes.

We're looking for a Senior Unity engineer to help build the client-side infrastructure of our training platform. This is not just one-off application work. You will build the client foundation that powers VR training simulations today, and additional client targets over time, connecting it to our server according to a defined client-server architecture. The role demands strong application architecture, on-device services, and performance optimization skills.

The Role

This is a hands-on individual contributor role focused on building and evolving key components of our platform's client-side architecture. You will build client infrastructure against a defined server-client architecture in which the server owns authoritative simulation state and logic, connecting the client to the server per spec and reflecting server-owned behavior faithfully on the device.

Key Responsibilities

• Own and drive key components of the Unity VR client architecture so they generalize across training simulations and, over time, additional client targets, rather than serving a single application.
• Build client-side infrastructure that connects to the server according to defined contracts and reflects server-owned state and behavior on the device.
• Co-design the client-server API with the backend, defining the data contracts.
• Develop tooling that supports content creators and other developers working on the platform.
• Use AI coding assistants as part of day-to-day development, and build and maintain the pipelines and validation that make their output reliable.
• Make pragmatic architectural decisions and manage technical priorities effectively in a fast-paced, ambiguous startup environment.

Requirements

• Demonstrated professional Unity and C# experience, ideally 5+ years, with a track record of shipping complex applications or products.
• A portfolio demonstrating experience architecting and refactoring large-scale Unity projects.
• Direct experience building for VR, in particular Meta Quest.
• A track record of building generic, reusable infrastructure and frameworks, not just one-off features.
• Comfort working within a defined client-server architecture and with established API contracts.
• A proactive and adaptable mindset suited for the dynamic and evolving environment of an early-stage startup.
• Excellent communication and collaboration skills in English, with experience working effectively in a remote, culturally diverse team.
• A genuine interest in using technology to enhance learning and education.

Nice To Have

• Experience targeting additional client platforms such as WebGL.
• Experience with data-driven or reactive component systems.

What We Offer

• A high-ownership role with direct influence on product direction, architecture, and user experience, and on company culture.
• A senior opportunity to build a platform from the ground up and contribute to its growth and commercialization.
• The flexibility of a fully remote position, with working hours flexible across European time zones rather than tied to US hours.

Position Overview:  

As a .NET Engineer you will drive the technical modernization of a large-scale system from .NET Framework 4.8 to .NET 10. Your work will span the full backend stack — replacing Windows-only dependencies, refactoring legacy patterns, migrating data access to EF Core, and ensuring every service is portable, containerizable, and ready for AWS cloud deployment. You will collaborate closely with DevOps and database engineers as part of a cross-functional Agile team delivering a phased, production-safe migration.

Responsibilities:

• Migrate a .NET Framework 4.8 application to .NET 10.
• Migrate a large database-first Entity Framework 6 model to EF Core 8 across multiple bounded contexts, one domain at a time.
• Identify and replace Windows-only libraries and assembly references that prevent building and running on Linux.
• Establish unit test coverage measurement and enforce quality gates as part of the migration pipeline.
• Collaborate with the DevOps engineer on Dockerfile authoring, environment configuration, and secrets injection.
• Participate in Agile/SCRUM processes, conduct code reviews, and document migration decisions.

Must-Have Qualifications:

• 4+ years of C# and .NET backend development with strong knowledge of ASP.NET and ASP.NET Core.
• Proven, hands-on experience migrating .NET Framework applications to .NET Core / .NET 8, 10 in production.
• Solid experience with Entity Framework Core.Solid knowledge of DDD, CQRS, and repository patterns in layered .NET architectures.
• Familiarity with Docker multi-stage builds and Linux container fundamentals for .NET applications.
• Proficient with xUnit and Moq for unit testing; comfortable with container-wired test setups.
• Experience with AWS ECS / Fargate and ECR for deploying containerized .NET applications.
• Familiarity with MassTransit and RabbitMQ or Amazon MQ for event-driven messaging.
• Experience with Hangfire or similar background job processing frameworks.
• Proficient in Git and familiar with Agile/SCRUM team processes.

Nice-to-Have Skills:

• Experience building CI/CD pipelines for .NET projects.
• Familiarity with micro-frontend architecture and Angular-based single-page applications.
• Experience with automated code coverage tooling and enforcing coverage thresholds in CI.
• Experience with performance optimization and scalable enterprise backend systems.

Creatio is a global vendor of an agentic CRM & workflow platform with no-code and AI at its core. We help organizations automate customer and operational workflows achieving the fastest time-to-value and the highest ROI on the market. Millions of workflows run on Creatio daily, supporting thousands of clients in over 100 countries. 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 a Middle .NET Developer to join our team and work on an exciting FinTech project. You'll collaborate with experienced engineers to build scalable, secure, and high-performance backend solutions.

Responsibilities:

• Develop and maintain backend services using C# and .NET.
• Design and implement RESTful APIs.
• Participate in architecture discussions and code reviews.
• Collaborate with cross-functional teams to deliver high-quality software.
• Write clean, maintainable, and well-tested code.
   

Requirements:

• 3+ years of commercial experience with C#/.NET.
• Strong knowledge of .NET Core / .NET 6+ and ASP.NET Core.
• Experience with REST APIs.
• Solid understanding of SQL databases (MS SQL Server or PostgreSQL).
• Experience with Entity Framework Core.
• Knowledge of OOP, SOLID principles, and design patterns.

Nice to Have:

• Docker and Kubernetes.
• Azure or AWS.
• Experience with microservices.
• Previous experience in the FinTech domain.

We Offer:

• Remote work and flexible working hours.
• Legal support.
• Paid sick leaves.
• Paid vacations.
• Medical insurance. 
• Free English classes.

Who we are  

We are a Ukrainian multiproduct company that creates database development and management tools, connectivity solutions, productivity tools, and data services for more than 500.000 clients from 120 countries. Since 1997, we have been streamlining data workflows for professionals and teams with our intuitive and efficient software products. We're committed to enhancing the experience of our customers across the globe by minimizing data-related tasks and enabling them to focus on more inspiring goals.  

Among our clients, you can find such legends as Microsoft Corporation, Oracle America, IBM, Intel, and many more companies that deserve their place in the Fortune 100 and Fortune 500. Whether it's global companies or individuals, we provide a customer-centric approach, delivering high-quality solutions and exceptional support.  

Driven by passion, we play a substantial role in shaping the future of data management. 

Product that needs your engagement  

Connectivity — An enterprise B2B product at the intersection of AI and corporate data infrastructure. It enables organizations to securely connect modern AI agents and LLM-based assistants to their internal data sources — relational databases, data warehouses, and SaaS systems — while maintaining strict governance, access control, and auditability. The product is deployed on-premise within the customer’s infrastructure, which makes security, compliance, and admin experience first-class concerns alongside end-user value.

Your future team of professionals 

You will be part of the Connectivity team and work with highly motivated professionals who are passionate about the project. You will collaborate with other .NET developers,  Product Owner, QA, and Support team. 

Impact you will make 

Product Management  

• Work closely with stakeholders to document business requirements, define user stories, and contribute to planning and execution  
• Collaborate with team members to ensure seamless implementation of UI/UX functionality, aligning with product vision and user needs  
• Verify requirements provided by a product management team and/or other stakeholders  
• Take part in preparing and prioritization of refactoring plans  
• Provide L3 support for clients (if applicable) 

Project Management  

• Decompose complex tasks into achievable work items  
• Interact with other teams involved in product development to optimize processes  
• Keep sprint workloads in an actual state 

People Management  

• Conduct coaching and mentoring activities to fulfill technical leadership for team members  
• Take part in technical interviews 

Software Development  

• Implement features of any level of complexity  
• Design tests (unit, integration, etc.)  
• Foster high quality standards for software development among team members by applying best practices  
• Conduct research while accepting features for implementation, decompose features into subtasks, providing accurate estimates  
• In collaboration with Head of Engineering and Solution Architect, design and implement architectural solutions within a project  
• Deliver features for testing and provide consultations to QA team during feature verification  
• Conduct code reviews 

Skills we are looking for 

• Deep knowledge and understanding of .NET Framework/.NET Core/.NET and C# 
• Deep knowledge and understanding of OOP and OOD (including SOLID and GoF design patterns)  
• Deep knowledge and understanding of data structures  
• Good algorithmic basis  
• Experience with relational databases and SQL  
• Experience with VCS (Git preferred)  
• Knowledge and understanding of issues lifecycle  
• Knowledge of approaches and methods of task estimation and decomposition  
• Experience with ALM systems (Jira preferred)  
• Experience with knowledge bases (Confluence preferred)  
• Understanding of basic CI/CD principles, experience with CI systems (Jenkins preferred)  
• Understanding of SCRUM principles and values  
• Experience with Entity Framework 
• Experience with ADO.NET  
• Essential experience with WinForms, preferred expirience with DevExpress WinForms components 
• Preferred expirience with SSIS, COM interop, unmanaged code interop 

Benefits you get 

Maintain your work-life balance 

• Take control of your workday with our flexible schedule. 
• 19 days of annual vacation granted on a pro-rata basis. 
• No overtime required. 

Hybrid/remote type of cooperation

Whether you prefer to work remotely in the comfort of your home office or from one of our 4 offices, you can help promote the global visibility of exceptional Ukrainian products from anywhere in the world. 

Stay healthy 

• Comprehensive medical insurance from a leading Ukrainian provider, including a wide range of services and special programs for relatives, and special options for those who live abroad. 
• 15 working days of sick leave per year – because your health is our priority. 

Grow with us 

• In-house English courses to increase your proficiency through our online courses and speaking clubs with a native speaker. 
• Online learning activities, including workshops, lectures, and webinars to enhance your leadership, management, and self-awareness skills. 
• Experience exchange with our team of professionals who eagerly share their deep expertise across various fields. 
• Opportunities for promotions, rotations, and transitions when you believe your skills could benefit a different role or team. 

Stand with Ukraine! 

We have an active pro-Ukrainian position! This means that we help our army, our servicemen, and their families not only through constant donations and volunteering but also through our military leave policy, special health insurance options, and financial assistance. 

We are a perfect match if you share our values 

We are professionals in our field. We know how to turn up our professionalism to the maximum because we are experts who enjoy solving complex tasks. We know how to focus on the product, think big, and, at the same time, delve deep into the details. 

We create a calm and friendly atmosphere within the company. We value the freedom of open and transparent communications. Radical honesty is embedded in the foundation of our culture. 

We are open to new things, constantly evolve, and practice regular knowledge sharing. Most importantly, the company creates an environment where we can fulfill our potential upon a solid foundation. 

Our Hiring process 

• Recruitment interview 
• Technical Interview 
• Offer Call 

We are looking for a Senior Software Engineer – Platform Modernization to lead development efforts focused on improving system scalability, modernizing backend services, and enhancing infrastructure and data systems within a high-scale, event-driven architecture.

The platform is built on a robust event-driven design and already supports scalable real-time processing and analytics. The goal of this role is to further expand its capabilities to meet growing technical and business demands.

As a senior member of the engineering team, you will play a key role in shaping the future of the platform by driving architectural improvements, increasing system reliability, and optimizing performance across core services. Your work will have a direct impact on the scalability, stability, and efficiency of mission-critical systems.

Responsibilities

• Develop and maintain modular, containerized microservices using .NET Core within a distributed architecture.
• Implement event-driven communication and streaming data flows using Kafka, RabbitMQ, and MassTransit.
• Collaborate with product leads and engineering leadership to translate business requirements into scalable technical solutions.
• Lead migration efforts from legacy components built on technologies such as .NET Framework and MSMQ into modern, cloud-ready services.
• Participate in design reviews, promote clean code practices, and apply Domain-Driven Design principles.
   

Requirements

• Minimum 8 years of experience in backend development.
• Proven expertise in big data and messaging systems — Kafka and RabbitMQ are mandatory.
• Experience with relational and NoSQL databases, including MSSQL, PostgreSQL, MongoDB, Redis
• Familiarity with MSMQ for legacy system understanding and migration - advantage
• Strong proficiency in .NET Core, .NET Framework, and C#.
• Experience in infrastructure development, including cloud-native and general-purpose systems - advantage
• Experience with AWS services (e.g., ECS/EKS, Lambda, RDS, S3, CloudWatch) - advantage
• Hands-on experience with MassTransit or other orchestration libraries - advantage
• Solid understanding of distributed systems, microservices, and event-driven architectures.
• Experience with API design, documentation, and governance.
• Knowledge of security best practices, including OAuth2, JWT, and secrets management.
• Strong debugging, profiling, and performance optimization skills.
• Passion for clean code, testing, and continuous improvement.
• Strong communication skills and a proactive approach to problem-solving.

Ability to mentor junior developers and contribute to team growth.

Bonus Skills

• Exposure to JavaScript/React for cross-layer collaboration.
• Familiarity with CI/CD pipelines, containerization, and infrastructure as code.

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

🚀 Looking for your first .NET Software Engineering role?
We are opening internship positions for students and recent graduates who want to join an international engineering team working on products developed for one of the world's leading technology companies.
If you have already built pet projects, completed university assignments, or taken programming courses and are ready for your first professional challenge, we want to hear from you!
📍 Locations:
• Poland
• Czech Republic
• Portugal
• Serbia
• Kazakhstan
• Egypt
What You’ll Get:

✔ Training on modern .NET technologies and best development practices.
✔ Mentorship from experienced engineers.
✔ Hands-on experience working on real projects.
✔ A chance to continue your career at Akvelon.

What We Expect:

🔹 Experience with C# and .NET.
🔹 Solid understanding of OOP, algorithms, and data structures.
🔹 Experience with SQL, Azure is a plus.
🔹 English level Intermediate or higher.
🔹 Strong problem-solving skills and a willingness to learn. environment
 

We’re looking for a Senior Azure Integration Services Engineer / Architect to design and deliver scalable integration solutions within the Azure Integration Services ecosystem. This role is ideal for someone who combines deep technical expertise with the ability to take ownership.

You’ll work closely with customers, architects, and delivery teams to design and implement integrations that connect business-critical systems in a secure, reliable, and maintainable way.

What You’ll Do

• Design, build, and maintain integration solutions using Azure Integration Services
• Architect and implement workflows with Logic Apps and Azure Functions
• Design and manage messaging solutions using Azure Service Bus and Event Grid
• Build data integration and transformation pipelines using Azure Data Factory
• Translate business and technical requirements into scalable integration architectures
• Ensure reliability, performance, security, and observability of integration solutions

What We’re Looking For

• 5+ years of professional experience in software development or integration engineering
• Strong hands-on experience with Azure Integration Services, including:
  • Logic Apps
  • Azure Service Bus
  • Event Grid
  • Azure Functions
  • Azure Data Factory
• Experience designing end-to-end integration architectures
• Solid understanding of messaging patterns, APIs, and event-driven architectures
• Ability to work independently and take ownership of technical delivery
• Experience working directly with clients or stakeholders
• Strong problem-solving and analytical skills
• Good English communication skills

Nice to Have

• Experience with API Management (APIM)
• Knowledge of B2B integrations (EDI, XML, JSON, REST, SOAP)
• Experience with Azure DevOps, CI/CD, and Infrastructure as Code
• Understanding of security and identity in Azure (Entra ID, managed identities)
• Azure certifications (Integration, Architecture, or Developer)

Stellar Logic specializes in custom IT solutions for international clients. We help businesses build internal systems and enterprise software that power their operations — from complex business logic to full-scale automation.

We’re looking for a hands-on Tech Lead / Senior Full-stack .NET Developer to join an existing engineering team and help strengthen technical ownership, delivery clarity, and client communication.

This role is for someone who enjoys staying close to the code, but also wants to influence technical decisions, guide other developers, improve engineering standards, and act as a reliable technical point of contact.

What You’ll Do

Hands-on Development: Build and improve backend and frontend parts of the system using .NET / C# and Angular.

Technical Leadership: Take ownership of technical decisions, code quality, implementation approaches, and engineering standards.

Team Coordination: Support planning, estimation, task decomposition, code reviews, and technical alignment within the team.

Architecture: Participate in system design, distributed architecture, integrations, scalability, and maintainability improvements.

Cloud & Infrastructure: Work with cloud environments, Kubernetes, CI/CD, and infrastructure-related tasks.

Client Communication: Communicate directly with the client on technical topics, clarify requirements, explain risks, and propose solutions.

Mentoring & Support: Help developers of different seniority levels through technical guidance, knowledge sharing, and practical support.

What We’re Looking For

Must-have:

• 5+ years of commercial software development experience
• Strong hands-on experience with .NET / C#
• Practical experience with Angular
• Experience with APIs, integrations, backend services, and complex business logic
• Experience with relational and/or NoSQL databases, ideally PostgreSQL and/or MongoDB
• Understanding of distributed systems, scalability, maintainability, and technical trade-offs
• Experience with cloud environments, preferably Azure and/or AWS
• Understanding of CI/CD processes and modern development workflows
• Previous experience as a Team Lead, Tech Lead, Lead Engineer, or in a role with similar technical responsibility
• English B2+ for direct communication with international clients
• Ownership mindset: ability to take responsibility for technical decisions, delivery risks, and the final result

Will be a plus:

• Experience with Kubernetes, Azure DevOps, Terraform / ARM / CloudFormation
• Experience with retail, e-commerce, logistics, supply chain, pricing systems, or internal enterprise systems
• Experience working in outsourcing / outstaffing or another client-facing environment
• Experience mentoring developers or coordinating a small engineering team

Why Work with Us?

🛠 Built around custom solutions
At Stellar Logic, we work on systems shaped around real business processes, not templates. Our projects often involve complex logic, integrations, internal workflows, and product decisions that require thoughtful engineering.

🎯 Small teams, meaningful ownership
You won’t be one of many people in a large structure. We work in focused teams where each person has visible impact, takes ownership of their part, and can influence both technical and product decisions.

⭐ Quality over quick fixes
We care about building software that is clear, reliable, and maintainable. Good engineering for us means understanding the problem, thinking through the solution, and delivering work that the team can build on.

🤝 Close collaboration with clients and teams
Our work requires direct communication, trust, and context. You’ll collaborate closely with people who care about the result — from engineers and designers to business stakeholders.

🚀 Room to grow with responsibility
Growth at Stellar Logic comes through ownership: taking on more complex tasks, leading initiatives, improving processes, mentoring others, or deepening your technical expertise.

What We Offer

Remote-first cooperation: Work from anywhere while staying connected with your team and international clients.

Flexible working hours: We value autonomy and trust, with core meetings for team and client alignment.

Paid vacation and sick leave: We support a healthy balance between work, rest, and personal life.

Tax and accounting support: We help with the administrative side so you can focus on your work.

Professional development: We support learning, certifications, and growth within your role.

Long-term collaboration: We aim to build stable cooperation, transparent communication, and a working environment where people can do their best work.

Not Meeting Every Skill?

Don’t worry if you don’t match every single requirement.
If your experience is close to what we’re looking for, you enjoy solving complex problems, and you’re ready to take ownership, we’d still be happy to talk.

We create solutions that put the client at the center of marketing. Marketing activities begin with an understanding of the client's needs and behavior, not with a product or campaign.

The platform brings together three key components:

rich historical, real, and forecast customer data, AI-controlled orchestration of the client's multi-channel paths, and statistically reliable assessment of the impact of each marketing action.

This allows you to create personalized, efficient, and measurable marketing that is truly customer-oriented.

Requirements

• At least 3 (1 for junior position) years of experience with .NET.
• Solid experience in SQL (advanced skills in DML).
• Hands-on experience with OLAP storage (at least one of Snowflake, BigQuery, or ClickHouse).
• Hands-on experience with microservice architecture and distributed high-load systems.
• Solid knowledge of Design Patterns.
• Experience in automated test creation (TDD).
• Experience in working with AI tools.
   

Advantages

• Being fearless of mathematical algorithms (part of our team’s responsibility is developing ML models for data analysis; although knowledge of ML is not required for the current position, it would be awesome if a person felt some passion for algorithms).
• Experience in python would be a plus.
• Experience with GCP would be a plus.
• Familiarity with Docker and Kubernetes.
• Experience with Terraform would be a plus.

We are looking for a .NET Developer with 1-2 years of experience for a full-time, remote position.

🔹 Tech Stack:

• ASP.NET Core 7, C#
• Entity Framework Core
• MySQL / PostgreSQL
• REST API, Swagger

🔹 Requirements:

• 1–2 years of commercial .NET development experience
• Strong practical skills with REST API
• Solid knowledge of SQL (MySQL or PostgreSQL)
• Understanding of N-tier architecture and Dependency Injection (DI)
• Experience with async/await

➕ Nice to have:

• Experience with Hangfire, SignalR
• Knowledge of Active Directory / LDAP

💼 What we offer:

• Full-time employment
• Fully remote work
• Competitive salary (negotiable based on interview results)

This is hybrid role for Ukrainians in Budapest - 3 times/week onsite. 

We are looking for an experienced Middle .NET Developer to join our team on an outsourcing basis. You will take ownership of designing, developing, and maintaining high-performance back-end systems, ensuring they are scalable, secure, and optimized for fintech use cases. The ideal candidate has a proven track record of solving complex technical challenges and delivering reliable solutions from the ground up. This role requires strong coding skills and a commitment to code quality at scale.

About the Project
A modular white-label fintech platform built on microservices architecture, designed for financial institutions such as challenger banks, PSPs, and trading and payment platforms. The platform is cloud-agnostic by design and currently runs on AWS, using Kubernetes, .NET Core, PostgreSQL, gRPC, and RabbitMQ (MassTransit). The team is at the start of the development process, with product quality as the top priority — building an effective, agile solution.

Current use cases include:
A financial platform for a regulated institution with EMI and VASP licenses in the Philippines, combining digital banking and cryptocurrency services — custodian wallets, liquidity management, crypto transfers, KYT, trading (matching engine), core banking, card issuing, and payment processing.

A unified wealth platform combining banking, payments, digital assets, and institutional-grade yield in a single regulated ecosystem — non-custodial wallets, a smart-contract vault engine, investment and yield accrual, and card transaction processing

Responsibilities
Develop and maintain new features and enhancements for back-end systems.
Resolve complex technical issues and bugs in a timely manner.
Provide accurate task estimations and contribute to project planning.
Conduct technical investigations and propose effective solutions.
Contribute to architectural decisions and promote best engineering practices.

Required Skills
At least 3 years of professional experience as a Software Developer.
Extensive hands-on experience with .NET / C# development.
Good expertise in web architecture, microservices, REST APIs, and asynchronous workflows.
Deep knowledge of software design principles and patterns (SOLID, YAGNI, Clean Code).
Solid experience with SQL and EF Core.
Database experience: PostgreSQL (SQL), Redis (NoSQL).
Ability to analyze, decompose, estimate, and deliver complex tasks.
Proven ability to write clean, maintainable, and testable code.

Nice to Have
Practical understanding of Kubernetes for deploying, scaling, and managing containerized applications in production.
Experience with AWS.
Experience with banking or fintech projects.
Experience working with the gRPC protocol.
Good communication skills and ability to mentor less experienced developers.

Tech Stack
.NET Core, ASP.NET Web API, Entity Framework
HTTP (REST), gRPC
PostgreSQL, Redis, RabbitMQ
Docker, Kubernetes
AWS
Git, GitHub Actions

Project Team
The team currently unites: 1 Solution Architect, 1 Project Manager, 2 Backend Engineers, 2 Frontend Engineers, 1 Business Analyst, 1 DevOps Engineer, 2 QA Engineers, and 2 UX/UI Designers.