Senior Backend Engineer [.Net] (work until 9 p.m. CET)

🏢 Summary: Senior Backend Engineer role focused on designing and scaling a high-throughput, event-driven platform. The position centers on building and optimizing large-scale event processing services and APIs in distributed systems. It involves solving complex scalability and reliability challenges in a massive-scale environment. 🗂️ Requirements: Senior-level experience in backend development, Strong Python expertise, Experience scaling message queue systems, Experience with distributed systems and microservices architecture, Proven track record building high-throughput backend services, Experience designing scalable and fault-tolerant systems, Ability to implement and optimize APIs 📃 Skills: Python, Azure, ServiceBus, StorageQueues, EventHubs, Microservices, DistributedSystems, APIs, EventDriven, EventSourcing, Streaming, Observability, Monitoring 🏢 Description: Location: Remote Type: Full-time Level: Senior Duration: 4 months Start: ASAP We are looking for an experienced Senior Backend Engineer to join a team responsible for building and scaling a high-throughput, event-driven platform operating at massive scale. Your primary focus will be the event processing backbone — designing, developing, and optimizing services that handle large volumes of messages reliably and efficiently. You will work closely with architects and other senior engineers to implement APIs that expose data and support advanced triage and processing workflows. This role is ideal for someone who enjoys solving hard scalability problems , working with distributed systems, and building resilient backend services that operate under real-world load. Responsibilities Design and build backend services responsible for large-scale event processing Optimize and scale message-based systems to handle high throughput and reliability requirements Implement APIs defined by system architects to expose data and collect processing results Collaborate with cross-functional teams to improve platform performance and resilience Contribute to architectural decisions around scalability, fault tolerance, and observability Core Skills Strong experience with Python as a primary backend language Deep expertise in scaling message queue systems (e.g. Azure Service Bus, Storage Queues, Event Hubs or similar) Solid understanding of microservices architecture and distributed systems Proven experience building high-throughput, resilient backend services Strong problem-solving skills and ability to work with complex systems Highly Desirable Experience with event-driven or event sourcing architectures Background in data processing frameworks or streaming systems Experience building platforms related to observability, monitoring, or large-scale event management Familiarity with designing systems for fault tolerance and graceful degradation What we offer Work on technically challenging systems operating at very large scale High level of autonomy and real influence on system architecture Collaboration with experienced engineers in a mature engineering environment Competitive compensation and flexible working model Project with strong technical ownership

🏢 Summary: Senior Backend Engineer role focused on modernising and expanding a secure AWS serverless platform in the healthcare sector. The position involves building event-driven backend services, migrating Azure components to AWS, and integrating Salesforce within a compliant cloud environment. This is a hands-on remote contract role delivering production-grade solutions under tight timelines. 🗂️ Requirements: 4+ years backend engineering experience, 2+ years AWS serverless production experience, Strong commercial experience with Python or TypeScript, Hands-on experience with AWS Lambda, API Gateway, EventBridge, SQS, SNS, Step Functions, Experience with RDS, DynamoDB, S3, Secrets Manager, Terraform for application-level infrastructure, Salesforce API integration experience (REST or Platform Events), Strong knowledge of REST APIs and event-driven architectures, GitLab with CI/CD workflows, Familiarity with SOC 2 or HIPAA compliance 📃 Skills: Python, TypeScript, AWS, Lambda, APIGateway, EventBridge, SQS, SNS, StepFunctions, RDS, DynamoDB, S3, SecretsManager, Terraform, GitLab, CI/CD, Salesforce, REST, Azure, AzureFunctions, AzurePipelines 🏢 Description: Senior Backend Engineer (AWS Serverless) About the Role We’re looking for experienced Senior Backend Engineers to join a cloud modernisation project in the healthcare sector. The team is responsible for rebuilding and expanding a secure AWS-based platform, migrating selected Azure services, and delivering scalable integrations with Salesforce and other external systems. This is a hands-on engineering role focused on backend services, serverless infrastructure, and event-driven architectures. You’ll work closely with cloud engineers, platform teams, and stakeholders to deliver production-ready solutions under tight delivery timelines. The project includes both modernisation of existing systems and development of new integrations — this is not a greenfield environment. Contract Type: B2B Work Mode: 100% Remote Time Zone: CET/CEST (Poland) — occasional meetings after 18:00 Project Overview The client is operating in the medical industry and is currently modernising their cloud ecosystem to support secure and compliant data processing workflows. The engineering team will focus on: Building AWS serverless services and APIs Designing event-driven integrations with Salesforce Migrating Azure-based components to AWS Rebuilding repositories and CI/CD processes in GitLab Delivering secure architectures aligned with SOC 2 and HIPAA standards Technology Stack Backend & Cloud Python TypeScript AWS Lambda API Gateway Step Functions EventBridge SQS / SNS Data & Infrastructure RDS DynamoDB S3 AWS Secrets Manager Terraform GitLab CI/CD Integrations & Compliance Salesforce REST API Salesforce Platform Events SOC 2 HIPAA Confluence Jira Responsibilities Backend Engineering & Integrations Build and maintain scalable serverless services on AWS Design and implement Salesforce-to-EventBridge integration patterns Develop secure architectures for client file transfer and data synchronisation Create reusable integration standards for event-driven and bulk-processing workflows Design and maintain RESTful APIs and asynchronous processing pipelines Migration & Platform Modernisation Rebuild selected Azure Functions and Azure Pipelines within AWS environments Support repository migration and CI/CD transition to GitLab Contribute to infrastructure and deployment automation using Terraform Engineering Quality & Delivery Participate in code reviews and maintain production-grade engineering standards Create and maintain technical documentation in Confluence Work within agile delivery processes including daily standups, sprint reviews, and retrospectives Collaborate closely with cloud engineers and platform stakeholders What We’re Looking For Required Skills & Experience 4+ years of backend engineering experience 2+ years working with AWS serverless technologies in production Strong commercial experience with Python and/or TypeScript Hands-on experience with: AWS Lambda API Gateway EventBridge SQS / SNS Step Functions Experience with RDS, DynamoDB, S3, and Secrets Manager Terraform experience focused on application-level infrastructure Experience integrating Salesforce APIs (REST and/or Platform Events) Strong understanding of REST APIs and event-driven architectures GitLab experience including CI/CD integration workflows Familiarity with SOC 2 and/or HIPAA compliance requirements Experience creating production-level technical documentation Nice to Have Azure Functions or Azure Pipelines migration experience Healthcare or medical-sector project background Experience with ETL / ELT or bulk data processing pipelines API test automation experience

🏢 Summary: Senior .NET/Azure Developer role focused on building a cloud-based risk intelligence platform that delivers analytics and ML-driven insights via scalable APIs and backend services. The position involves designing integrations across Azure data services and implementing reliable, high-performance cloud-native solutions. You will contribute to architecture, CI/CD, and SaaS solution development within the Azure ecosystem. 🗂️ Requirements: 4+ years of backend development experience with C# and .NET Core / ASP.NET, Experience building RESTful APIs and services, Strong knowledge of Azure cloud technologies (Service Bus, Key Vault, App Services, Azure DevOps), Hands-on experience with Azure DevOps CI/CD pipelines and deployments, Understanding of Azure cloud architecture and cloud-native patterns, Experience with JSON and XML and service integration patterns, Experience with test frameworks for RESTful services, Knowledge of OOP, design patterns, and SOLID principles, Experience with version control and CI tools, Upper-Intermediate or higher English level 📃 Skills: C#, .NET, ASP.NET, REST, JSON, XML, Azure, ServiceBus, KeyVault, AppServices, AzureDevOps, CICD, OOP, SOLID, Git, Testing 🏢 Description: Andersen is hiring a Senior .NET/Azure Developer for a project building a risk intelligence platform, enabling data-driven insights and improved decision-making. The customer is a global organization operating in the professional services domain. It provides a range of advisory and analytical support to organizations across multiple industries, helping them improve business performance and address complex operational challenges. The company leverages data, industry knowledge, and digital tools to deliver practical solutions, supporting decision-making, organizational development, and long-term efficiency. The project is focused on developing a digital platform that supports risk intelligence and resilience decision-making. It leverages data, analytics, and modeling to help organizations assess risk exposure and improve operational performance. Responsibilities: Designing and implementing APIs and backend services for accessing, processing, and exposing analytical and ML-driven data. Building integration layers between data platforms (Azure Data Lake, Azure SQL, Cosmos DB) and applications. Implementing data ingestion, transformation, and orchestration workflows in collaboration with data teams. Working with semi-structured data (JSON) and integrating it into scalable backend services. Supporting AI-driven pipelines and integrating outputs from Azure ML and similar services. Ensuring performance, scalability, and reliability of services in line with SLAs. Integrating backend components within the Azure ecosystem (Functions, Storage, messaging). Contributing to system architecture, especially service boundaries between data and application layers. Writing clean, maintainable, and testable code, including unit tests and automation. Collaborating with architects, data engineers, and frontend teams, and supporting backlog refinement with Product Owners. Conducting code reviews, debugging issues, and improving system performance. Developing PoCs and contributing to SaaS solution design using modern technologies. Implementing high-performance cloud solutions using Azure and IaC practices. Must-haves: Hands-on experience with backend development using C#, .NET Core / ASP.NET , building RESTful APIs and services, for 4+ years. Familiarity with JSON/XML and service integration patterns. Strong experience with Azure cloud technologies, including Azure Service Bus, Azure Key Vault, Azure App Services, and Azure DevOps. Hands-on experience with Azure DevOps CI/CD pipelines, deployments, release flows, and integrations. Understanding of Azure cloud architecture and cloud-native patterns. Experience working with test frameworks/test cases for RESTful services. Experience with software engineering best practices: object-oriented, design patterns, SOLID principles. Experience with software development ecosystem (IDE’s, version control, test automation/CI, etc.). Strong appreciation of building flexible cross-functional full-stack squads with shift-left DevOps, SRE and QA culture. Level of English – from Upper-Intermediate and above. Nice-to-haves: Experience in frontend development using Angular. Strong appreciation of DevOps principles, with the ability to create automated processes to continuously deliver SaaS products on a regular cadence. Exposure to people management or team leadership. Experience with Azure Data Lake, Azure ML, Event Grid, AKS, Azure AI/data pipelines, and Azure VM administration. Experience with Azure Functions, Azure Storage, Cosmos DB, Azure SQL, Azure messaging patterns, Azure monitoring/observability, and Infrastructure as Code in Azure (Terraform/Bicep). Experience with SQL Server or other database management systems. Degree in Computer Science, Engineering, Mathematics, or related fields. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy/pl Join us!

🏢 Summary: Senior .NET/Azure Developer role focused on building a cloud-based risk intelligence platform that delivers data-driven insights and supports AI/ML-powered decision-making. The position involves designing scalable backend services, integrating data platforms, and implementing high-performance cloud solutions within the Azure ecosystem. The role emphasizes API development, data integration, and cloud-native architecture using modern DevOps and IaC practices. 🗂️ Requirements: 4+ years of backend development experience with C# and .NET Core/ASP.NET, Experience building RESTful APIs and backend services, Strong experience with Azure cloud services, Hands-on experience with Azure DevOps CI/CD pipelines and deployments, Understanding of Azure cloud architecture and cloud-native patterns, Experience with JSON/XML and service integration patterns, Experience with test frameworks for RESTful services, Knowledge of OOP, design patterns, and SOLID principles, Experience with version control and CI tools, Upper-Intermediate English or higher 📃 Skills: C#, .NET, ASP.NET, REST, Azure, ServiceBus, KeyVault, AppServices, AzureDevOps, CI/CD, JSON, XML, AzureFunctions, CosmosDB, AzureSQL, AzureStorage, Terraform, Bicep, SQLServer, AKS 🏢 Description: Andersen is hiring a Senior .NET/Azure Developer for a project building a risk intelligence platform, enabling data-driven insights and improved decision-making. The customer is a global organization operating in the professional services domain. It provides a range of advisory and analytical support to organizations across multiple industries, helping them improve business performance and address complex operational challenges. The company leverages data, industry knowledge, and digital tools to deliver practical solutions, supporting decision-making, organizational development, and long-term efficiency. The project is focused on developing a digital platform that supports risk intelligence and resilience decision-making. It leverages data, analytics, and modeling to help organizations assess risk exposure and improve operational performance. Responsibilities: Designing and implementing APIs and backend services for accessing, processing, and exposing analytical and ML-driven data. Building integration layers between data platforms (Azure Data Lake, Azure SQL, Cosmos DB) and applications. Implementing data ingestion, transformation, and orchestration workflows in collaboration with data teams. Working with semi-structured data (JSON) and integrating it into scalable backend services. Supporting AI-driven pipelines and integrating outputs from Azure ML and similar services. Ensuring performance, scalability, and reliability of services in line with SLAs. Integrating backend components within the Azure ecosystem (Functions, Storage, messaging). Contributing to system architecture, especially service boundaries between data and application layers. Writing clean, maintainable, and testable code, including unit tests and automation. Collaborating with architects, data engineers, and frontend teams, and supporting backlog refinement with Product Owners. Conducting code reviews, debugging issues, and improving system performance. Developing PoCs and contributing to SaaS solution design using modern technologies. Implementing high-performance cloud solutions using Azure and IaC practices. Must-haves: Hands-on experience with backend development using C#, .NET Core / ASP.NET , building RESTful APIs and services, for 4+ years. Familiarity with JSON/XML and service integration patterns. Strong experience with Azure cloud technologies, including Azure Service Bus, Azure Key Vault, Azure App Services, and Azure DevOps. Hands-on experience with Azure DevOps CI/CD pipelines, deployments, release flows, and integrations. Understanding of Azure cloud architecture and cloud-native patterns. Experience working with test frameworks/test cases for RESTful services. Experience with software engineering best practices: object-oriented, design patterns, SOLID principles. Experience with software development ecosystem (IDE’s, version control, test automation/CI, etc.). Strong appreciation of building flexible cross-functional full-stack squads with shift-left DevOps, SRE and QA culture. Level of English – from Upper-Intermediate and above. Nice-to-haves: Experience in frontend development using Angular. Strong appreciation of DevOps principles, with the ability to create automated processes to continuously deliver SaaS products on a regular cadence. Exposure to people management or team leadership. Experience with Azure Data Lake, Azure ML, Event Grid, AKS, Azure AI/data pipelines, and Azure VM administration. Experience with Azure Functions, Azure Storage, Cosmos DB, Azure SQL, Azure messaging patterns, Azure monitoring/observability, and Infrastructure as Code in Azure (Terraform/Bicep). Experience with SQL Server or other database management systems. Degree in Computer Science, Engineering, Mathematics, or related fields. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies). Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy Join us!

🏢 Summary: Senior Backend Engineer role focused on designing and developing cloud‑enabled web applications, APIs, and digital twin solutions for large-scale data center environments using Azure and NVIDIA Omniverse. The position involves full software development lifecycle responsibilities and collaboration with international teams on global simulation and visualization platforms. 🗂️ Requirements: 7+ years of experience in software development with .NET / .NET Core, Strong C# and .NET programming skills, Experience with REST API development, Experience with Entity Framework or other ORM, Knowledge of relational and non-relational databases, Experience with SQL Server, Experience with Azure cloud services, Proficiency with Git or similar version control systems, Experience processing large datasets, Knowledge of Infrastructure as Code (Terraform preferred) 📃 Skills: C#, .NET, .NETCore, REST, EntityFramework, SQLServer, Azure, AppServices, AzureSQL, AzureFunctions, ServiceBus, Git, Terraform, Omniverse, ORM 🏢 Description: We are seeking a Senior Backend Engineer who will work with local teammates as well as collaborate closely with our U.S.-based project management and development teams, contributing to the design and implementation of modern cloud‑enabled web applications, APIs, and digital twin solutions for large‑scale data center environments. This is a unique opportunity to work on global projects, leverage cutting‑edge technologies such as Azure Cloud and NVIDIA Omniverse APIs, and help shape the future of our next‑generation simulation and visualization platforms. Key Responsibilities Develop and maintain applications using .NET / .NET Core, and Azure cloud services Contribute to the development of digital twin components, including data ingestion, simulation logic, and integration with Omniverse APIs Collaborate with project managers and developers to ensure alignment with client requirements Participate in all stages of the software development lifecycle: design, coding, testing, debugging, and documentation Write clean, efficient, secure, and maintainable code following best practices Liaise with system analysts and business owners to refine requirements and improve applications Work with Azure services such as App Services, Azure SQL, Azure Functions, or Service Bus (depending on project needs) Requirements 7+ years of experience in software development (.NET / .NET Core, Entity Framework (or other ORM), REST APIs)) Strong C# / .NET programming skills and design principles Familiarity with relational/non relational database design and development (SQL Server preferred) Knowledge of Entity Framework or other ORM tools Proficiency with GitHub or similar version control systems Experience with processing large amounts of data Strong English communication skills, both spoken and written, enabling clear explanation of technical topics Ability to work independently and in a collaborative team environment Knowledge of IaC (Terraform preferred) Ideally You’ll Also Have Interest or experience in cloud‑based simulation, IoT, or digital twin technologies Exposure to Agile methodologies (Scrum) Microsoft Certified Developer Associate or Azure certification We offer Rewarding employment: Full-time employment with a salary that matches your qualifications Hybrid work model: Enjoy the flexibility of working from home, with just several office days per month Flexible hours: Start your day anytime between 7:30 and 10:00 AM Comprehensive benefits: Including Lux Med medical care, psychological support, life insurance, My Benefit cafeteria system, Multisport card co-financing, and a car/bike park sharing system Co-financed holidays: Enjoy "Wczasy pod Gruszą" for a well-deserved break Global projects: Engage in exciting international projects Inclusive networks: Join our diverse employee networks like Women's Network, OneWorld, PRISM, Careers Network, Green Team, SpeakUp, Collectively, and more Continuous learning: Participate in our Graduate Development Program, Learners’ Community, and self-learning platforms Language courses: Enhance your skills with courses in English, German, and Polish

🏢 Summary: B2B contract for an experienced Backend Software Engineer to design, build, and operate cloud-native backend services on Microsoft Azure in a 100% remote model. The role focuses on end-to-end ownership of scalable, event-driven services, including development, deployment, and DevOps activities using modern Azure and container technologies. 🗂️ Requirements: Strong experience with C# and .NET in backend development, Practical experience with Microsoft Azure services, Experience with AKS and containerized workloads, Experience with messaging systems such as Service Bus or Kafka, Knowledge of SQL databases and data modeling, Experience with CI/CD pipelines, Experience with Infrastructure as Code using Terraform, Understanding of event-driven architecture 📃 Skills: C#, .NET, Azure, AKS, ServiceBus, Kafka, APIManager, SQL, Terraform, CI/CD, Kubernetes, DevOps 🏢 Description: Start Date: ASAP / Within 1 Month / Flexible Work Model: 100% remote Contract Type: B2B (140-150 PLN/h + VAT) We are looking for an experienced Backend Software Engineer to join a cloud‑native development team delivering scalable services on Microsoft Azure. The role focuses on designing, building, and operating backend services end‑to‑end in a modern, event‑driven architecture. You will take full ownership of your services, from development through deployment and ongoing support, working closely with architects and platform stakeholders. Responsibilities: Design, build, test, and deploy backend services and APIs using C# and .NET. Take ownership of build, release, and DevOps activities for assigned services. Develop and support event‑driven and messaging‑based architectures on Microsoft Azure. Deploy and manage containerised workloads using Azure Kubernetes Service (AKS). Provision and maintain infrastructure using Terraform in line with platform and client standards. Expectations: Strong hands‑on experience with C# / .NET i n backend service development. Practical experience with Microsoft Azure, including AKS, Service Bus or Kafka, and API Manager. Solid knowledge of SQL databases and data modelling concepts. Familiarity with CI/CD pipelines, DevOps best practices, and infrastructure as code. Ability to work effectively in agile teams, with strong problem‑solving and communication skills. What We Offer: Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance

🏢 Summary: Senior Backend Engineer role focused on defining the technical direction and architecture of a domain within a borderless financial platform. The position involves designing scalable microservices, driving architectural decisions, and leading a small backend team in a distributed environment. The role emphasizes reliability, security, and high‑volume transaction processing in a cloud-based ecosystem. 🗂️ Requirements: 4-7 years backend engineering experience, Proficiency in Go, Experience with Java 21 or modern Java, Experience designing microservices with clear contracts, Experience with caching strategies including TTL and invalidation, Experience with event-driven or asynchronous architectures, Experience with structured logging, metrics, and alerting, Experience with AWS services, Experience with relational and non-relational databases, Experience with Spring Boot or similar frameworks, Experience reviewing code and architectural decisions, Availability to work in GMT+5:30 timezone 📃 Skills: Java, Go, Spring, JDBI, PostgreSQL, CockroachDB, DynamoDB, Redis, SQS, SNS, Kafka, AWS, EKS, ALB, RDS, S3, Kong, Datadog, Quickwit, JWT, RBAC, TLS, Docker, ArgoCD, GitHub, Microservices, Kafka, CDC 🏢 Description: Project overview This project focuses on developing a borderless financial platform that supports international banking flows, payments, account management and regulatory compliant operations. The product handles sensitive data and high volume transactions while prioritising reliability and security. Team You will work in a distributed environment with backend engineers, a product manager and platform specialists. The role involves leading a sub team of three to five engineers, conducting design reviews, ensuring code quality standards and supporting collaborative decision making. Position overview We are looking for a Senior Backend Engineer who will define the technical direction of a backend domain and drive architectural decisions. You will design microservices, create scalable solutions, guide a small engineering group and collaborate closely with product specialists to shape the delivery roadmap. We are looking for a person willing to work in the time zone: GMT+5:30. Technology stack Java 21, Go, Spring Boot, JDBI, custom workflow engines, PostgreSQL, CockroachDB, DynamoDB, Redis, SQS, SNS, Kafka, AWS EKS ALB RDS S3 Secrets Manager, Kong API Gateway, Datadog, Quickwit, JWT RBAC TLS request and response encryption VAPT, GitHub Actions, Docker, ArgoCD, microservices, event driven architecture, saga and orchestration patterns, CDC pipelines, maker checker workflows Responsibilities Plan and design backend microservices with clear boundaries and contracts Develop solutions for domains such as onboarding, payments, transaction orchestration or platform components Break complex epics into actionable tasks with clear acceptance criteria Review designs from other engineers to ensure scalability and fault tolerance Drive technical decisions including caching layers, asynchronous processing strategies, database choices and API versioning Evaluate build versus buy options for integrations and services Collaborate with a product manager to align on scope and prioritisation Lead a sub team of backend engineers and support their professional growth Support incident response, root cause analysis and long term improvements Monitor service performance using logging, metrics and tracing tools Requirements Professional backend engineering experience from 4-7 years Experience with Go (tooling & CLIs) Experience designing microservices with well-defined contracts and boundaries Experience with Java 21 or modern Java versions Experience with caching strategy design, including TTL and invalidation approaches Experience working with asynchronous processing, event-driven architecture, or queue-based workflows Experience using structured logging, metrics, and alerting to debug production systems Experience in making build versus buy decisions with clear trade-off analysis Experience reviewing code and identifying architectural or contract issues Experience with AWS-based services Experience working with relational and non-relational databases such as PostgreSQL or DynamoDB Experience writing backend services using Spring Boot or similar frameworks Nice to have Experience with financial or payments related systems Experience with KYC or AML flows Experience with workflow or orchestration engines Experience with platform wide pattern creation or reusable service design Experience with data encryption practices and security audits Experience with CockroachDB or high availability distributed databases What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Dev Lead / Senior Backend Engineer role focused on building and leading scalable backend systems using .NET and Microsoft Azure in a complex retail environment. The position combines hands-on development with technical leadership, emphasizing event-driven and microservices architectures. The role drives system design, integration, and engineering quality across a distributed cloud-based landscape. 🗂️ Requirements: Strong backend development experience with C# and .NET, Experience with .NET 8 or modern .NET versions, Experience developing and operating applications on Microsoft Azure, Practical experience designing and building event-driven systems, Experience with microservices architectures, Experience with Azure messaging patterns (queues, topics, event-based integrations), Experience with CI/CD pipelines using Azure DevOps and YAML 📃 Skills: CSharp, DotNet, DotNet8, Azure, Microservices, EventDriven, Messaging, AzureDevOps, YAML, CICD, Queues, Topics 🏢 Description: \We are seeking a Dev Lead / Senior Backend Engineer specialized in .NET and Azure to join a premium fashion retailer's internal tech team. This role is vital for ensuring the scalability, maintainability, and coherence of a broad system landscape. The ideal candidate will possess strong backend development skills, particularly in C# and modern .NET versions, and have practical experience in setting up event-driven architectures and developing applications on Microsoft Azure. The Dev Lead will contribute both as a hands-on developer and as a technical leader, mentoring team members and driving engineering quality. Main Responsibilities The Consultant will work as a hands-on engineer while also supporting the technical direction of the team. Developing backend services and integrations Reviewing pull requests and contributing to code quality Supporting architectural discussions with the Head of Tech and the team Ensuring the overall development landscape remains coherent and scalable Contributing to system design decisions and actively engaging in technical discussions Supporting developers with architectural and technical queries Participating in technical discovery and solution design for new initiatives Driving improvements in development practices Exploring AI-assisted development tools for practical usage Interfacing with third-party SaaS vendors for integration efforts Key Requirements Strong backend development experience with C# / .NET Experience with .NET 8 or modern .NET versions Experience developing and operating applications on Microsoft Azure Practical experience designing and building event-driven systems Experience with microservices architectures Experience with Azure messaging patterns (queues, topics, event-based integrations) Experience with CI/CD pipelines (Azure DevOps, YAML pipelines) Comfortable working remotely in a setup primarily on site Nice to Have Experience with Cosmos DB Experience working with integration platforms Experience building integration-heavy systems Strong understanding of scalable distributed systems Ability to communicate system architecture clearly to stakeholders Experience with e-commerce systems Experience in retail environments

🏢 Summary: Backend Developer (.NET) role focused on building and migrating a large-scale travel booking platform from monolithic to microservices architecture. The position involves developing scalable backend services, integrating multiple external APIs, and ensuring reliable data synchronization and high-performance booking processes. Work includes close collaboration within Agile teams and contribution to CI/CD practices. 🗂️ Requirements: 3+ years experience with .NET including .NET Core and .NET Framework 4.8 (Web API), Strong knowledge of microservices architecture, Experience with Clean Architecture and MediatR, Solid experience with SQL Server, Solid experience with MongoDB, Experience with Azure Service Bus or NServiceBus, Experience with CI/CD pipelines (preferably Azure DevOps), Ability to work independently and solve complex technical problems, English level Intermediate+ or higher 📃 Skills: .NET, C#, WebAPI, NETCore, SQLServer, MongoDB, Microservices, CleanArchitecture, MediatR, AzureServiceBus, NServiceBus, AzureDevOps, CICD, GitHub, Jira, Confluence 🏢 Description: Andersen is hiring a Backend Developer (.NET) for a project developing a travel platform, ensuring API integrations, data synchronization, and reliable, scalable booking processes. The customer is a technology-driven company in the travel sector, providing a comprehensive booking and procurement platform for industry professionals. Its solutions support large transaction volumes, integrate with a wide network of partners, and offer tools that streamline operations and enhance productivity. Focused on innovation and scalability, the customer continues to expand its ecosystem, strengthen partnerships, and improve data accuracy to deliver a modern digital infrastructure for the travel value chain. The project is focused on developing a travel platform that integrates multiple external APIs into a unified system. It ensures reliable data synchronization and seamless booking processes to support scalable and high-performance partner connectivity. The position assumes 12 to 21 CET work schedule. Responsibilities: Developing and maintaining backend services in .NET 4.8 (Web API) and .NET Core as part of a large-scale migration from monolithic to microservice architecture. Collaborating with cross-functional teams to design and implement scalable, maintainable, and performant services using Clean Architecture and MediatR. Integrating with SQL Server and MongoDB as data backends. Working with Azure Service Bus (NServiceBus) and other Azure services such as Azure Functions and ADF (nice to have). Participating in Agile ceremonies (standups, sprint planning, retrospectives) within 2-week sprint cycles. Contributing to CI/CD practices using Azure DevOps (builds and pipelines). Collaborating via Jira, Confluence, GitHub, and Microsoft Teams. Must-haves: Experience with .NET for 3+ years, including strong experience with .NET Core and .NET Framework 4.8 (Web API). Deep understanding of microservice architecture, Clean Architecture patterns, and MediatR. Solid experience with SQL Server and MongoDB. Experience with Azure Service Bus / NServiceBus. Familiarity with CI/CD tools and pipelines (preferably Azure DevOps). Strong problem-solving skills and the ability to work independently. Level of English – from Intermediate+ and above. Nice-to-haves: Experience in frontend development. Experience with Azure Functions, Azure Data Factory (ADF), or other Azure ecosystem tools. Previous experience in the travel industry, particularly with backend services for hotel booking/search. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies); Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy Join us!

🏢 Summary: Backend Developer (.NET) role focused on building and migrating a travel platform from monolith to microservices, ensuring reliable API integrations and scalable booking processes. The position involves developing high-performance backend services, integrating multiple external systems, and supporting data synchronization across a distributed architecture. Work includes close collaboration within Agile teams and contribution to CI/CD and cloud-based infrastructure. 🗂️ Requirements: 3+ years experience with .NET, Strong experience with .NET Core, Strong experience with .NET Framework 4.8 (Web API), Experience with microservice architecture, Knowledge of Clean Architecture patterns, Experience with MediatR, Experience with SQL Server, Experience with MongoDB, Experience with Azure Service Bus or NServiceBus, Experience with CI/CD pipelines, Familiarity with Azure DevOps, English level Intermediate+ or higher 📃 Skills: .NET, .NETCore, .NETFramework, WebAPI, Microservices, CleanArchitecture, MediatR, SQLServer, MongoDB, AzureServiceBus, NServiceBus, AzureDevOps, CI/CD, Azure 🏢 Description: Andersen is hiring a Backend Developer (.NET) for a project developing a travel platform, ensuring API integrations, data synchronization, and reliable, scalable booking processes. The customer is a technology-driven company in the travel sector, providing a comprehensive booking and procurement platform for industry professionals. Its solutions support large transaction volumes, integrate with a wide network of partners, and offer tools that streamline operations and enhance productivity. Focused on innovation and scalability, the customer continues to expand its ecosystem, strengthen partnerships, and improve data accuracy to deliver a modern digital infrastructure for the travel value chain. The project is focused on developing a travel platform that integrates multiple external APIs into a unified system. It ensures reliable data synchronization and seamless booking processes to support scalable and high-performance partner connectivity. The position assumes 12 to 21 CET work schedule. Responsibilities: Developing and maintaining backend services in .NET 4.8 (Web API) and .NET Core as part of a large-scale migration from monolithic to microservice architecture. Collaborating with cross-functional teams to design and implement scalable, maintainable, and performant services using Clean Architecture and MediatR. Integrating with SQL Server and MongoDB as data backends. Working with Azure Service Bus (NServiceBus) and other Azure services such as Azure Functions and ADF (nice to have). Participating in Agile ceremonies (standups, sprint planning, retrospectives) within 2-week sprint cycles. Contributing to CI/CD practices using Azure DevOps (builds and pipelines). Collaborating via Jira, Confluence, GitHub, and Microsoft Teams. Must-haves: Experience with .NET for 3+ years, including strong experience with .NET Core and .NET Framework 4.8 (Web API). Deep understanding of microservice architecture, Clean Architecture patterns, and MediatR. Solid experience with SQL Server and MongoDB. Experience with Azure Service Bus / NServiceBus. Familiarity with CI/CD tools and pipelines (preferably Azure DevOps). Strong problem-solving skills and the ability to work independently. Level of English – from Intermediate+ and above. Nice-to-haves: Experience in frontend development. Experience with Azure Functions, Azure Data Factory (ADF), or other Azure ecosystem tools. Previous experience in the travel industry, particularly with backend services for hotel booking/search. Reasons why this job would be interesting to you: Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc.. The opportunity to change the project and/or develop expertise in an interesting business domain. Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant. Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee. The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities. Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated. Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies); Certification compensation (AWS, PMP, etc). Referral program. English courses. Private health insurance and compensation for sports activities. Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy Join us!