Azure Integration Developer

🏢 Summary: The offer is for a cloud integration engineer role focused on migrating legacy enterprise integration systems to Azure Integration Services within a large-scale transformation program. The position combines hands-on development and architectural design in a Migration Factory team rebuilding critical interfaces using Azure-native solutions. It involves designing scalable cloud integrations, implementing CI/CD pipelines, and delivering production-ready enterprise integration architectures. 🗂️ Requirements: Strong experience with Azure Integration Services, Experience with Logic Apps, Service Bus, API Management, Event Grid, Azure Functions, Hands-on experience with Azure DevOps and CI/CD pipelines, Experience with Azure Data Factory, Experience with Bicep for Infrastructure as Code, Strong development experience in .NET, Experience designing integration architectures, Knowledge of enterprise integration patterns, Ability to rebuild and migrate legacy enterprise interfaces to Azure, Ability to work independently in delivery-focused environment 📃 Skills: Azure, LogicApps, ServiceBus, APIManagement, EventGrid, AzureFunctions, AzureDevOps, AzureDataFactory, Bicep, .NET, C#, CI/CD, BizTalk 🏢 Description: Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. Join a high-impact cloud transformation initiative focused on modernizing a global enterprise integration and data landscape. This role is part of a strategic migration from legacy platforms to Azure Integration Services (AIS) and broader Azure-native solutions. You will be part of a dedicated “Migration Factory” team responsible for rebuilding critical enterprise interfaces while contributing to the design and implementation of a modern cloud architecture. The role combines hands-on development with architectural input—starting from analyzing existing systems to delivering scalable, production-ready Azure solutions. This is a greenfield-style environment within an established framework, offering strong architectural support alongside a high degree of ownership and autonomy. Key Responsibilities: Analyze and map existing integration and data landscapes (EAI flows and enterprise systems) Design modern, scalable Azure-based integration architectures Rebuild and migrate enterprise interfaces to Azure Integration Services Develop and implement cloud-native solutions using Azure services Collaborate with architects and stakeholders to define technical blueprints Ensure high-quality, reliable, and maintainable integration solutions Support CI/CD processes and deployment pipelines Required Skills & Experience: Strong experience with Azure Integration Services , including: Logic Apps Service Bus API Management Event Grid Azure Functions Hands-on experience with: Azure DevOps (CI/CD pipelines, deployments) Azure Data Factory Bicep (IaaC) Solid development experience in .NET / C# Experience designing and implementing integration architectures Understanding of enterprise integration patterns and messaging systems Ability to work independently in a fast-paced, delivery-focused environment Nice to Have: Experience with BizTalk Server (migration scenarios highly valued)

🏢 Summary: Role in a cloud transformation program focused on migrating enterprise integration and data platforms to Azure Integration Services and Azure-native solutions. Combines hands-on development with architectural design, rebuilding legacy interfaces and delivering scalable, production-ready cloud integrations. Involves working within a dedicated migration team with strong ownership over modern Azure-based integration architecture. 🗂️ Requirements: Strong experience with Azure Integration Services, Experience with Logic Apps, Experience with Service Bus, Experience with API Management, Experience with Event Grid, Experience with Azure Functions, Hands-on experience with Azure DevOps and CI/CD pipelines, Experience with Azure Data Factory, Experience with Bicep for Infrastructure as Code, Solid development experience in .NET, Solid development experience in C#, Experience designing integration architectures, Understanding of enterprise integration patterns, Experience with messaging systems, Ability to analyze and migrate legacy integration systems 📃 Skills: Azure, LogicApps, ServiceBus, APIManagement, EventGrid, AzureFunctions, AzureDevOps, DataFactory, Bicep, .NET, C#, CI/CD, IaaC, EAI, BizTalk 🏢 Description: Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. Join a high-impact cloud transformation initiative focused on modernizing a global enterprise integration and data landscape. This role is part of a strategic migration from legacy platforms to Azure Integration Services (AIS) and broader Azure-native solutions. You will be part of a dedicated “Migration Factory” team responsible for rebuilding critical enterprise interfaces while contributing to the design and implementation of a modern cloud architecture. The role combines hands-on development with architectural input—starting from analyzing existing systems to delivering scalable, production-ready Azure solutions. This is a greenfield-style environment within an established framework, offering strong architectural support alongside a high degree of ownership and autonomy. Key Responsibilities: Analyze and map existing integration and data landscapes (EAI flows and enterprise systems) Design modern, scalable Azure-based integration architectures Rebuild and migrate enterprise interfaces to Azure Integration Services Develop and implement cloud-native solutions using Azure services Collaborate with architects and stakeholders to define technical blueprints Ensure high-quality, reliable, and maintainable integration solutions Support CI/CD processes and deployment pipelines Required Skills & Experience: Strong experience with Azure Integration Services , including: Logic Apps Service Bus API Management Event Grid Azure Functions Hands-on experience with: Azure DevOps (CI/CD pipelines, deployments) Azure Data Factory Bicep (IaaC) Solid development experience in .NET / C# Experience designing and implementing integration architectures Understanding of enterprise integration patterns and messaging systems Ability to work independently in a fast-paced, delivery-focused environment Nice to Have: Experience with BizTalk Server (migration scenarios highly valued)

🏢 Summary: Role focused on rebuilding around 30 complex ERP integration interfaces into a modern, cloud-native architecture using Azure Integration Services. The position involves designing and implementing scalable integration processes from scratch in Microsoft Azure, primarily with Azure Logic Apps and related services. The project follows a structured delivery model and emphasizes reliable asynchronous messaging and integration patterns. 🗂️ Requirements: Commercial experience with Azure Logic Apps, Strong proficiency in .NET and C#, Hands-on experience creating Azure Functions, Solid knowledge of Azure Service Bus (queues, topics, subscriptions), Strong understanding of integration patterns (EAI), Experience with data mapping, error handling, and monitoring in distributed systems 📃 Skills: Azure, LogicApps, .NET, C#, AzureFunctions, ServiceBus, EAI 🏢 Description: Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. We are looking for an experienced Azure Integration Developer and a true Azure Logic Apps enthusiast - to join a large migration project for our international client. The goal is to rebuild ~30 complex integration interfaces (message exchange between ERP systems like JDE, NAV, and external systems) into a modern, 100% cloud-native environment based on Azure Integration Services (AIS) using a Factory Delivery model. Your task will be to build the integration logic from scratch in the Microsoft Cloud. You don't need to know the legacy system we are migrating from – what matters most is how well you can build reliable, scalable integration processes in Azure. What you will be doing: Building new integration flows primarily based on Azure Logic Apps . Creating and deploying data transformations (often based on XSLT/XML/SOAP) using Azure Functions . Handling asynchronous communication and message routing using Azure Service Bus . Developing solutions according to the prepared target architecture (specific Inbound / Outbound patterns). Integrating with other cloud services: API Management, Azure Key Vault, Azure App Configuration. Following development standards – including Infrastructure as Code ( Bicep ) and CI/CD processes ( Azure DevOps ). Required Skills & Experience: Azure Logic Apps – this is a hard requirement. You must have commercial experience in building, maintaining, and monitoring Logic Apps. .NET / C# – fluent coding skills, especially in the context of Azure Functions. Azure Functions – ability to create functions from scratch, strong understanding of triggers and bindings. Azure Service Bus – solid understanding of queues, topics, subscriptions, and asynchronous messaging patterns. Integration Experience – strong grasp of integration patterns (EAI), data mapping, error handling, and monitoring in distributed systems. Nice to have: Hands-on experience and fluency in using Azure API Management . Experience with XSLT / XML transformations and familiarity with SOAP / REST protocols. Experience with Infrastructure as Code, preferably Bicep (alternatively ARM Templates / Terraform). Knowledge of Azure DevOps (creating and maintaining CI/CD pipelines). Familiarity with Azure Event Grid. Any knowledge of Microsoft BizTalk Server is a plus (it will help with reading legacy code), but it is not required.

🏢 Summary: Senior .NET Lead Developer role focused on leading delivery of Azure-based applications for an international client. The position involves driving code quality, performance optimization, architectural improvements, and mentoring developers while collaborating with QA, DevOps, and product teams. The role also includes decomposing monolithic systems and ensuring production reliability and release readiness. 🗂️ Requirements: 8+ years of software development experience, Strong experience with C# and .NET, Strong experience with ASP.NET Core and Web API, Strong experience with Entity Framework and EF Core, Strong experience with Azure (App Services, Azure SQL, Application Insights, Azure DevOps, CI/CD), Experience with performance optimization in production systems, Experience leading developers and conducting code reviews, Experience with CI/CD pipelines 📃 Skills: C#, .NET, ASP.NET, WebAPI, EFCore, Azure, AppServices, AzureSQL, ApplicationInsights, AzureDevOps, CI/CD, Redis, Angular, React, ServiceBus, Storage, APIManagement 🏢 Description: Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. Now we’re looking for a .NET Developer to join our team on a project for one of our international clients. We need a hands-on .NET lead developer who can own delivery, improve code quality, mentor developers, and work closely with architecture, QA, DB, DevOps, and product stakeholders. What exactly will you be doing?: Leading development work across .NET, C#, and Azure-based applications. Reviewing and improving code quality, performance, maintainability, and reliability. Working on application performance optimizations, including async/await, EF Core usage, caching, API design, memory allocation, HttpClient usage, long-running processes, and error handling. Supporting the decomposition of monolithic functionality into modular components or services. Partnering with QA teams on testability, regression coverage, defect triage, and release readiness. Mentoring mid-level developers and raising engineering standards. Collaborating with product and business stakeholders to clarify requirements and reduce rework. Participating in production issue analysis and root-cause reviews. Required Skills & Experience: 8+ years software development experience. Strong C#, .NET, ASP.NET Core, Web API experience. Strong Entity Framework / EF Core experience. Strong Azure experience: App Services, Azure SQL, Application Insights, Azure DevOps, CI/CD. Experience improving performance and reliability in production systems. Experience leading developers, reviewing code, and setting engineering standards. Strong communication skills with both technical and non-technical stakeholders. Nice to have: Angular / React / front-end experience. Redis / distributed caching. Azure Front Door, API Management, Service Bus, Storage. Insurance, fintech, or regulated environment experience. Experience with test automation and CI/CD quality gates.

🏢 Summary: Offer for an experienced Software Engineer to build AI-first applications and advanced agentic systems using modern LLM frameworks, with strong ownership over architecture and delivery. The role focuses on developing RAG-based solutions and integrating large language models into production systems in collaboration with US partners. 🗂️ Requirements: Strong hands-on proficiency in Python, Commercial experience with LangChain, LangGraph, or CrewAI, Experience integrating large language models (OpenAI, Anthropic, Azure OpenAI), Practical experience with Vector Databases, Strong understanding of RAG architecture, Experience designing and building REST APIs, Ability to independently own end-to-end technical delivery 📃 Skills: Python, LangChain, LangGraph, CrewAI, OpenAI, Anthropic, Azure, RAG, REST, APIs, VectorDB, LLM 🏢 Description: Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. We are looking for an experienced Software Engineer for whom AI is not just a trendy buzzword, but a practical tool for building advanced products. You will join a team dedicated to creating intelligent, AI-first applications, working in close collaboration with our partners in the USA, and will have a real impact on the architecture and delivery process — we are looking for someone with a strong sense of ownership. If you are passionate about building agentic systems and working with cutting-edge Language Models, you are exactly the person we are looking for. What exactly will you be doing?: Developing advanced AI agent systems and co-agent frameworks utilizing LangChain, LangGraph, or CrewAI. Building and refining RAG (Retrieval-Augmented Generation) systems designed to process complex compliance and operational documentation. Designing and implementing dedicated AI-first applications along with smart integrations between various systems and APIs. Required Skills & Experience: Python Mastery: Strong, hands-on proficiency in Python as your primary programming language. AI Frameworks: Commercial experience with LangChain, LangGraph, or CrewAI. LLM Integrations: Proven track record of integrating large language models (OpenAI, Anthropic, Azure OpenAI). AI Infrastructure: Solid understanding and practical experience with Vector Databases and RAG architecture. Backend / API: Experience in designing, building, and integrating REST APIs. Delivery Ownership: High level of autonomy, proactivity, and end-to-end responsibility for the technical delivery of features. Nice to have: Cloud Platform: Hands-on experience with the Microsoft Azure environment. Data Platforms: Familiarity with Microsoft Fabric and Databricks.

🏢 Summary: Long-term B2B role focused on building, operating, and improving an enterprise-scale Azure cloud platform with strong emphasis on automation, security, and developer experience. The position involves designing CI/CD pipelines, implementing landing zones and policy-as-code, and integrating cloud services with enterprise systems. Work is hybrid (Warsaw office) with occasional business trips and collaboration in an international environment. 🗂️ Requirements: 3+ years of experience with Microsoft Azure including operations, Strong Infrastructure as Code skills, Knowledge of CAF and Enterprise Scale best practices, Understanding of security and compliance standards, Experience with CI/CD pipelines, Experience with DevOps practices, Experience working in Agile methodologies 📃 Skills: Azure, Bicep, Terraform, CI/CD, DevOps, IaC, CAF, Agile, APIs 🏢 Description: Start : Flexible Contract : B2B, long term cooperation Work model : 3 days from the Warsaw office per week Project language: English/Polish Business trips: to Denmark occasionally Recruitment process: case study + 1 meeting You will play a key role in building, operating, and continuously improving our cloud platform and automation capabilities. Your mission is to enable scalable, secure, and compliant cloud adoption through everything-as-code , strong engineering practices, and deep integration between cloud services and existing enterprise systems. A key focus of the role is to continuously improve platform usability and developer experience . We strive to make the platform intuitive, well-documented, and easy to work with – so development teams can focus on delivering business value rather than dealing with complexity. Responsibilities Design, build, and operate the Enterprise Scale Foundation platform and CI/CD pipelines. Improve platform usability, reliability, and developer experience. Implement and manage Landing Zones, guardrails, and policy-as-code. Develop automation using IaC, APIs, and reusable workflows. Build integrations with enterprise systems (e.g., ITSM, identity, data). Ensure security, compliance, and governance standards are met. Collaborate with teams to drive platform improvements and enable self-service. Requirements 3+ years of experience with Microsoft Azure (including operations). Strong Infrastructure as Code (IaC) skills (Bicep, Terraform) Knowledge of CAF / Enterprise Scale best practices. Understanding of security and compliance (preferably financial sector).Experience Experience with CI/CD, DevOps, and Agile methods. Previous experience with Customer Exeprience.

🏢 Summary: Long-term backend role focused on building and maintaining system integrations in an Azure-native environment using C#/.NET. The position involves developing APIs and microservices, working with cloud services, and improving CI/CD and Infrastructure as Code solutions within an Agile/SAFe setup. The project connects internal and external systems to support real business operations. 🗂️ Requirements: Minimum 3 years of experience as a Backend or .NET Developer, Strong experience with C# and .NET 6+, Experience building and maintaining system integrations, Hands-on work with REST APIs, message queues, FTP, microservices, Experience with Azure or other cloud platforms (AWS, GCP), Basic knowledge of Infrastructure as Code, Experience with CI/CD pipelines, Experience working in distributed systems or microservices architecture 📃 Skills: C#, .NET, Azure, AWS, GCP, REST, APIs, Microservices, MessageQueues, FTP, Terraform, Bicep, Pulumi, AzurePipelines, GitHubActions, GitLabCI, Jenkins, TeamCity 🏢 Description: Do you want to build integrations that power real business operations across the globe? Are you ready to work in an Azure-native environment where you can grow your skills in cloud, messaging, and microservices? If you enjoy learning on the job and working closely with business and Scrum teams, this project could be a great fit. Join a long-term integration team in Poland, contributing to solutions that connect systems for clients, partners, and internal teams. Key responsibilities Develop backend applications in C# / .NET Build and maintain integrations between systems (APIs, messaging, microservices) Work with cloud services (mainly Azure) Support and improve CI/CD pipelines and Infrastructure as Code (IaC) solutions Troubleshoot and resolve integration issues Collaborate with other application teams in an Agile/SAFe-based environment Ideal candidate profile At least 3 years of experience as a backend or .NET developer Practical experience with C# and .NET (6+) Experience with system integrations (REST APIs, message queues, FTP, microservices) Familiarity with cloud platforms (Azure preferred, AWS/GCP acceptable) Basic understanding of Infrastructure as Code (Azure Bicep, Terraform, Pulumi) and CI/CD pipelines (Azure Pipelines, GitHub Actions, GitLab CI/CD, Jenkins, TeamCity) Comfortable working in a distributed systems / microservices environment Team-oriented, communicative, and eager to learn from both business and technical teams Conditions Location: Gdańsk (Olivia Centre) Work model: Hybrid (2-3 days in the office) Employment type: B2B Project duration: Long-term cooperation expected; the first contract for 6-12 months Salary: 100-150 PLN/h Recruitment steps Initial call with a KUBO recruiter Interviews with the client Decision and feedback

🏢 Summary: Senior Software Developer role focused on designing and implementing complex API and microservice integrations in a banking environment using Azure and .NET. The position combines solution design with hands-on development, owning the full lifecycle of secure, low-latency integration solutions. The developer will lead Azure-based integrations, optimize Python transformations, and ensure high-quality, well-monitored applications. 🗂️ Requirements: 7+ years of hands-on experience with Azure development, Strong experience with .NET development, Experience building integration solutions using .NET and Azure, Experience with Azure Functions, APIM, Service Bus, App Insights, Working knowledge of Python for integration and transformation tasks, Experience writing and maintaining unit tests, Expertise in Application Insights monitoring and optimization, Experience designing integration patterns in CRM context 📃 Skills: Azure, AzureFunctions, ServiceBus, APIM, AppInsights, .NET, Python, Microservices, APIs, CRM, UnitTesting 🏢 Description: 🌍 Work mode: hybrid (preferably from Krakow or Warsaw): • People from Krakow and Warsaw - 6x per month in the office • People outside of Krakow and Warsaw - 1-2x per month in the office ⏰ Start : June/July 2026. 📝 Contract : B2B. ⏳ Duration : >12 months contracts. 📕 Project language : English. 💼 Industry : Banking. 📑 Workload: Full time. ⚙️ Recruitment process : 1h technical screening on zoom. 💻 Equipment : Work on emagine or your own equipment. We are looking for a Senior Software Developer who thrives at the intersection of technical design and hands-on execution . In this role, you will be the technical engine driving key initiatives for integration projects. Unlike a traditional architect role, your focus will be on Solution Design: creating the technical 'how-to' for complex integrations and then leading the end-to-end development . Main Responsibilities: Draft end-to-end technical designs for API solutions and microservice integration patterns. Own the full development cycle, ensuring secure, low-latency communication paths between backend systems and UI/UX layers. Manage the technical integration of platforms using Azure Functions and Service Bus. Fine-tune Python-based code mainly for specific transformations (e.g. Pendo-related) while having the agility to refactor logic as needed. Participate in design reviews and incorporate stakeholder feedback. Support discussions surrounding potential migrations to managed environments. Key Requirements: 7+ years of hands-on experience in Azure development (Functions, App Insights, APIM, and Service Bus ). Strong experience in .NET development (primary technology.) Experience in building integration solutions using . NET and Azure. Expertise in Python (basic/working knowledge required, mainly for integration/transformation tasks), with strong proficiency in .NET. A 'quality-first' mindset with extensive experience writing and maintaining unit tests. Deep expertise in using Application Insights for monitoring and optimizing live applications. Proven experience in designing and building integration patterns within a CRM context. Nice to Have: Exposure to Power Platform (optional) . Experience with Google Cloud Platform (GCP). Prior experience with Highspot, Pendo, or MS Dynamics integrations.

🏢 Summary: Contract B2B role for a senior engineer to rebuild a 401(k) retirement plan administration platform from scratch with an AI-native foundation, owning end-to-end delivery across AWS infrastructure, JVM backend, and TypeScript frontend. The position involves architectural decision-making, close collaboration with US-based stakeholders, and translating complex financial domain rules into scalable software. Strong emphasis on AI-assisted engineering practices and greenfield system design in a regulated, transactional environment. 🗂️ Requirements: 7+ years professional software engineering experience, Senior or staff-level system design experience, Strong JVM backend experience (Kotlin, Java, or Scala), Solid TypeScript frontend experience (React, Angular, or similar), Production experience with AWS, Deep understanding of VPCs, IAM, RDS, Lambda or ECS, Experience with Infrastructure as Code (Pulumi, Terraform, or CDK), Experience designing non-trivial distributed systems, Fluent English, Experience in regulated or transactional domains, Ability to work with US East Coast time overlap 📃 Skills: Kotlin, Java, Scala, TypeScript, React, Angular, AWS, VPC, IAM, RDS, Lambda, ECS, Pulumi, Terraform, CDK, Claude, Cursor, CI/CD, Python 🏢 Description: Financial Platform Rebuild You’d be joining a small, senior team rebuilding a 401(k) plan administration platform from the ground up. The existing system was built and operated by a third party; the client is taking ownership and rebuilding it greenfield with a strong AI-native foundation. This is not a ticket-taking role. You’ll sit in product conversations with business users, push back on requirements, propose architectural directions, and own end-to-end delivery from infrastructure to UI. The client is US-based with engineers on both coasts. Working hours need meaningful overlap with US East Coast (afternoon CET works well). What you’d be doing - Designing and building the core platform: event processing for money math, plan configuration, eligibility rules, and supporting services. - Owning vertical slices end-to-end – AWS infrastructure, Kotlin backend, TypeScript frontend. - Acting as a thought partner on architecture decisions (IaC choice, service boundaries, data model). - Interviewing internal subject-matter experts to translate domain knowledge into working software. - Setting the bar for AI-native engineering practices – how the team uses Claude Code, Cursor, agents, and defining best practices. Logistics - Engagement model: Contract (B2B), initial 3–6 month commitment with strong likelihood of extension. - Hardware: Managed, secured environment provided. - Interview process: Internal screen → tech screen with client tech lead → live coding session (AI-assisted format) → culture call. - Start: Ideally within 2–4 weeks. Must-have - 7+ years of professional software engineering experience with senior or staff-level track record. - Strong backend engineering on the JVM – Kotlin preferred; strong Java or Scala with Kotlin exposure acceptable. - Solid TypeScript frontend experience – React, Angular, or similar. - Solid cloud infrastructure fundamentals including networking, IAM, compute, and managed services. - Strong system design and architectural decision-making skills. - English fluency. - AI-native fluency – active use of Claude Code, Cursor, or similar agents. - Production AWS experience with deep familiarity in VPCs, IAM, RDS, Lambda/ECS trade-offs. - Infrastructure as Code experience – Pulumi, Terraform, or CDK. - Experience in regulated or transactional domains (fintech, payments, healthcare, insurance, ERP, billing systems). - Comfort working in greenfield, ambiguous environments. Nice to have - Direct retirement / pensions / 401(k) experience. - DevOps ownership experience (CI/CD, observability, on-call). - Python data-stack background. Benefits - Fully paid licenses for AI tools (Cursor, Claude Pro, etc.). - Flexible working hours and remote work options. - Comfortable office in central Warsaw with essential tools. - Multisport card and private medical care. - Culture of feedback, mentoring, and career growth opportunities. - Opportunity to build systems that drive real investment decisions in a high-performing engineering culture.

🏢 Summary: Contract role for a senior engineer to rebuild a 401(k) plan administration platform from scratch with an AI-native foundation. The position involves end-to-end ownership of architecture and delivery across AWS infrastructure, Kotlin backend, and TypeScript frontend in close collaboration with US-based stakeholders. You will shape system design decisions and implement core financial domain logic in a greenfield environment. 🗂️ Requirements: 7+ years professional software engineering experience, Strong JVM backend experience (Kotlin, Java, or Scala) in production, Hands-on TypeScript frontend experience (React, Angular, or similar), Production experience with AWS and cloud infrastructure design, Experience designing non-trivial system architectures, IaC experience (Pulumi, Terraform, or CDK), Experience in regulated or transactional domains (fintech, payments, healthcare, insurance, ERP, billing), Ability to work with US East Coast time overlap, Fluent English, Experience using AI coding tools in daily workflow 📃 Skills: Kotlin, Java, Scala, TypeScript, React, Angular, AWS, VPC, IAM, RDS, Lambda, ECS, Pulumi, Terraform, CDK, Claude, Cursor, CI/CD, Python 🏢 Description: Vecten | Client: US-based, retirement plan administration | Remote (Poland-based) | Contract / B2B We are an AI-native data and technology partner for private capital and healthcare. Founded in 2010 and headquartered in Warsaw, we work with leading PE firms, VC funds, and healthcare organizations to build proprietary data infrastructure, deploy AI solutions, and drive AI-native transformation. Our clients manage a cumulative $210B+ in assets. Our average engagement runs five years. Our NPS sits above 80. We don't need to claim credibility — we can show it. We've also done to ourselves what we now do for clients. We've restructured our own company around AI — tools, policies, roles, delivery models. This isn't a pitch. It's a playbook we've already run, and we're hiring the engineers who will run it for others. - Financial Platform Rebuild - You'd be joining a small, senior team rebuilding a 401(k) plan administration platform from the ground up. The existing system was built and operated by a third party; the client is taking ownership and rebuilding it greenfield with a strong AI-native foundation. This is not a ticket-taking role. You'll sit in product conversations with business users, push back on requirements, propose architectural directions, and own end-to-end delivery from infrastructure to UI. The client is US-based with engineers on both coasts. Working hours need meaningful overlap with US East Coast (afternoon CET works well). What you'd be doing Designing and building the core platform: event processing for money math, plan configuration, eligibility rules, and the supporting services around them. Owning vertical slices end-to-end – AWS infrastructure, Kotlin backend, TypeScript frontend. Acting as a thought partner on architecture decisions still being made (IaC choice, service boundaries, data model). Interviewing internal subject-matter experts to translate domain knowledge into working software. Setting the bar for AI-native engineering practices – how the team uses Claude Code, Cursor, agents, and what good looks like. Logistics Engagement model: Contract via Vecten (B2B), initial 3–6 month commitment with strong likelihood of extension. Hardware: Vecten provides a managed, secured environment. Interview process: Vecten internal screen → tech screen with the client's tech lead → live coding session (likely screen-share, AI-assisted format) → culture call. Start: Ideally within 2–4 weeks. Must-have 7+ years of professional software engineering experience , with a meaningful track record of senior or staff-level work. Strong backend engineering on the JVM – Kotlin, Java, or Scala in production. Kotlin experience preferred; if you have strong Java/Scala and have shipped Kotlin on a side project, that works. Solid TypeScript on the frontend – React, Angular, or similar, enough to own UI slices without needing a dedicated frontend pair. Solid cloud infrastructure fundamentals – you've reasoned about networking, IAM, compute, and managed services for real systems and can defend the trade-offs. Architecture chops – you've designed non-trivial systems, can defend trade-offs, and are comfortable disagreeing when you think someone's wrong. English fluency – you'll be talking to business users and engineers daily. Strongly preferred AI-native fluency – you actively use Claude Code, Cursor, or equivalent agents in your daily workflow. You can talk specifically about what you delegate, what you don't, and why. AWS in production – not just "deployed something once". Deep familiarity with VPCs, IAM, RDS, Lambda/ECS trade-offs on real workloads. IaC experience – Pulumi, Terraform, or CDK. Background in regulated or transactional domains – fintech, payments, healthcare, insurance, ERP, billing systems. Anything where audit trails, eligibility rules, and money math matter. Comfort working in greenfield ambiguity – you've been the second or third engineer on a platform before and know how to make progress when half the decisions aren't made yet. Nice to have Direct retirement / pensions / 401(k) experience – the unicorn profile. If you have it, lead with it. DevOps depth – you've owned CI/CD pipelines, observability stacks, and on-call rotations. Python data-stack background – likely to become relevant as analytics and reporting work comes online. What we're not asking for A specific number of years on Kotlin, AWS, or any one tool. We care about depth of judgment, not box-ticking. Front-end specialisation. You don't need to debate React Server Components – you need to ship working UI. Big-bank or HFT pedigree. This is retirement plan administration, not trading. Benefits Unrestricted AI Stack & Premium Gear: Fully paid licenses for Cursor, Claude Pro, etc. Work with a talented team redefining the global perception of Poland Flexible working hours and remote work options Comfortable office in central Warsaw with all essential tools Multisport card & private medical care A culture of feedback – evaluation meetings, mentoring, and career growth opportunities Frontier Engineering Culture: Build alongside elite engineers who are shipping systems that drive real investment decisions. Backed by continuous growth and a strong knowledge-sharing culture ( check our YouTube ). Sounds like a perfect place for you? Don’t hesitate to click apply and submit your application today!