.NET Developer

About IGLU TECH IGLU TECH is a Lithuanian smart energy technology company developing and manufacturing solutions that connect software, cloud, IoT, and physical energy devices. Its ecosystem includes heat pumps, EV charging stations, energy storage systems, and other smart energy technologies, all designed to work together through connected platforms and applications. The company is actively growing its in-house software capabilities and building solutions that help users monitor, control, and optimize energy consumption. THE ROLE We build the cloud platform behind connected home-energy hardware – heat pumps, EV chargers, home batteries and thermostats. Our services take device telemetry in, decide how equipment should run against live electricity-market prices and weather forecasts, and send commands back out. The code you write changes the temperature in someone’s house, or decides when their car charges tonight. We’re looking for a mid-level .NET developer to join the engineering team. The role is backend-first: scalable services, APIs, integrations and cloud infrastructure. Experience with React and TypeScript – or an appetite for picking it up – is a strong plus, but the job stands on its own without it. If you like distributed systems, taking real ownership of a service, and the idea of software that reaches physical hardware, this should suit you. WHAT YOU’LL DO Take features through the full lifecycle – from solution design to production delivery.Build and maintain .NET services in C#, with clean, testable code.Design and implement RESTful APIs and backend services.Work on event-driven services and real-time device telemetry.Develop new product features and improve what’s already running.Work across cloud services, databases, messaging and distributed architectures.Write unit tests and help keep our coverage and code-quality gates green. What you’d actually be working with: CORE: C# / .NET 8 ASP.NET Core Web API + Minimal APIs Microservices Clean architecture.DATA: PostgreSQL EF Core Dapper Redis DynamoDB, Timestream time-series.MESSAGING & REALTIME: RabbitMQ SignalR gRPC / Protobuf Event-driven integration.PLATFORM SERVICES: Hangfire background jobs, NSubstitute, Duende IdentityServer OAuth2 / OIDC, xUnit.DEVICE PROTOCOLS: MQTT, OCPP EV charging, Modbus.AWS: EKS, IoT Core, S3, SQS, SES, Lambda, ECR, RDS, ElastiCache, CloudWatch, DynamoDB, Timestream.INFRASTRUCTURE: Kubernetes, Docker, Kustomize, Terraform, Sealed Secrets.DELIVERY: Azure DevOps, Azure Pipelines, Azure Artifacts, SonarCloud.FRONTEND (optional): React 18, TypeScript, Vite, MUI, Redux Toolkit, TanStack Query. Nobody arrives knowing all of this. We care that you’re strong in .NET and comfortable in a cloud environment – OCPP, Modbus and the energy domain are things you’ll pick up here. Requirements: Essential: 2+ years of backend development with .NET / C#.Strong understanding of RESTful API design.Good grasp of SOLID and modern architecture patterns.Hands-on experience with AWS, or another major cloud platform.Experience with microservices and distributed systems.Comfort with relational databases and ORMs – we use EF Core on PostgreSQL.Strong problem-solving and a solution-focused mindset.Ownership: you’re happy being the person responsible for a service.Nice to have: Frontend experience with React and TypeScript.IoT, connected devices, or systems that touch physical hardware.Time-series data or telemetry at scale.Kubernetes and container orchestration.Message brokers and event-driven architecture.Energy, utilities or electricity-market domain knowledge.Interest in working across backend, cloud and device integration. Company offers: WHY IGLU? A scheduled job pulls tomorrow’s day-ahead electricity prices from the European transparency platform, joins them with a weather forecast, and works out how a heat pump should run overnight. An EV charger opens a WebSocket and starts speaking OCPP to a service you maintain. A thermostat publishes to an MQTT topic and a dashboard updates in real time. Most .NET roles are business applications. This one has physical consequences, market data and hardware protocols in the middle of it. You’ll work in a small engineering team across three environments with real production traffic, on a platform that’s been growing since 2021 – mature enough to have proper patterns, small enough that your architectural decisions actually stick. There’s plenty left to build, and genuine ownership over the parts you build. Monthly Salary: €3500 - €4500 gross