Senior Software Engineer

🏢 Summary: Senior Cloud React/TypeScript Developer role focused on designing and deploying cloud-native applications on AWS, combining modern UI development with robust cloud architecture. The position involves building responsive front-end solutions and scalable serverless back-end services. You will work on end-to-end cloud solutions, including APIs, databases, and CI/CD pipelines. 🗂️ Requirements: 8+ years of professional software development experience, Strong expertise in React, Strong expertise in TypeScript, Hands-on experience with AWS cloud platform, Experience with serverless architectures, Experience with AWS Lambda, Experience with AWS Batch, Strong knowledge of RESTful API design, Experience with CI/CD pipelines, Experience with relational databases, Experience with NoSQL databases 📃 Skills: React, TypeScript, AWS, Lambda, Batch, Serverless, REST, CICD, SQLServer, DB2, Sybase, MongoDB, ElasticSearch 🏢 Description: Unleash the Future of Cloud and UI Innovation — Shape Next-Generation Applications! Warsaw-based opportunity with hybrid work model. As a Senior Cloud React/TypeScript Developer – AWS Solutions , you will be working for our client, a leader in cloud-native digital transformation solutions. You will be instrumental in designing and deploying cutting-edge cloud applications, combining modern UI development with robust cloud architecture capabilities. Join a team that values innovation and accelerates your career in the digital era. Your main responsibilities: Design, develop, and deploy cloud-native solutions utilizing AWS services. Build modern, responsive UI applications using React and TypeScript. Architect and implement serverless solutions with AWS Lambda and AWS Batch. Develop RESTful APIs following best practices for scalability and security. Implement and maintain CI/CD pipelines for automated deployment processes. Work with both relational databases (SQL Server, DB2, Sybase) and NoSQL data stores (MongoDB, ElasticSearch). Collaborate with cross-functional teams to deliver innovative solutions and communicate technical concepts clearly to non-technical stakeholders. You're ideal for this role if you have: 8+ years of professional experience in software development, specializing in modern programming languages. Strong expertise in UI development with React and TypeScript. Hands-on experience architecting and deploying solutions on AWS cloud platform. Proficiency with serverless architectures (AWS Lambda, AWS Batch). Solid understanding of RESTful API design and development principles. Experience with CI/CD pipelines and automated deployment tools. Familiarity with relational and NoSQL databases such as SQL Server, MongoDB, or ElasticSearch. It is a strong plus if you have: (optional) Experience with Infrastructure-as-Code tools such as Terraform or CloudFormation. Commercial focus and ability to translate business needs into technical solutions. Strong collaboration skills within cross-functional teams. Language Required for the role: Communicative level of English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: 6-month contract role (with possible extension) focused on modernizing applications and migrating workloads to AWS within a large-scale cloud transformation program. The position involves building scalable, production-ready cloud solutions using TypeScript and AWS CDK, designing secure multi-tier architectures, and implementing automation and CI/CD pipelines. This is a hands-on engineering role centered on AWS-native and serverless technologies. 🗂️ Requirements: Experience migrating workloads to AWS, Hands-on experience with AWS CDK and CloudFormation, Strong programming skills in TypeScript and Node.js, Experience designing multi-tier and highly available architectures, Experience with serverless and microservices architectures, Experience with CI/CD pipeline implementation, Knowledge of cloud security, monitoring, and performance optimization, Experience with relational and NoSQL databases 📃 Skills: AWS, ECS, Fargate, Lambda, StepFunctions, S3, RDS, MSK, TypeScript, Node.js, Python, Bash, CDK, CloudFormation, DynamoDB, MongoDB, Aurora, Postgres, GitLab, CodePipeline, Microservices, Serverless 🏢 Description: Contract: 6 months (option to extend) | On-site: 3-4 days/week | Start: Immediate Join a global engineering team driving cloud transformation for a leading investment bank project! This is a hands-on role where you’ll help modernize applications, migrate workloads to AWS, and build scalable, production-ready cloud patterns using TypeScript and AWS CDK. What you’ll do: Migrate workloads to AWS and implement cloud-native solutions Build reusable frameworks, utilities, and automation to accelerate cloud adoption Design and deploy multi-tier, highly available, and secure applications Collaborate with global teams on feature design and problem-solving Ensure compliance, monitoring, and performance optimization across cloud environments Key Skills & Technologies: AWS Services: ECS Fargate, Lambda, Step Functions, S3, RDS, MSK Programming: TypeScript, Node.js, Python, Bash Infrastructure as Code: AWS CDK, CloudFormation Databases: DynamoDB, MongoDB, Aurora Postgres CI/CD tools: GitLab CI/CD, AWS CodePipeline Cloud architecture, microservices, serverless computing You are: Passionate about cloud and developer experience Experienced in architecting and deploying production-ready systems Collaborative, proactive, and comfortable in fast-paced environments Ready to take your cloud expertise to the next level? Join us and help shape the future of cloud at a global scale, your next challenge starts here!

🏢 Summary: Remote B2B opportunity for a Senior Fullstack Developer focused on building scalable web applications using React, TypeScript, Node.js, and AWS services. The role includes frontend and backend development, microservices architecture, cloud integrations, and technical decision-making in an international environment. 🗂️ Requirements: Minimum 5 years of experience in web application development, Strong knowledge of Node.js, Strong knowledge of React, Strong knowledge of TypeScript, Practical experience with AWS services, Knowledge of PostgreSQL, Experience with microservices architecture or cloud-based solutions, Knowledge of Clean Code principles and design patterns, Experience with Git, Very good English skills 📃 Skills: Node.js, React, TypeScript, AWS, ECS, Lambda, S3, DynamoDB, SQS, SES, PostgreSQL, Git 🏢 Description: Informacje o projekcie: Branża: IT Stawka: do 175 zł/h netto + VAT, B2B Lokalizacja: zdalnie Język projektu: angielski, polski Zakres obowiązków: Projektowanie i rozwój skalowalnych rozwiązań webowych. Tworzenie oraz rozwijanie aplikacji frontendowych w oparciu o React i TypeScript . Implementacja i rozwój usług backendowych z wykorzystaniem Node.js oraz TypeScript . Integracja aplikacji z usługami AWS, w szczególności: ECS, Lambda, S3, DynamoDB, SQS, SES. Projektowanie i optymalizacja architektury systemów. Współpraca przy podejmowaniu decyzji technicznych oraz wyborze najlepszych rozwiązań technologicznych. Optymalizacja wydajności, bezpieczeństwa oraz jakości tworzonych rozwiązań. Udział w code review oraz wsparcie zespołu w utrzymaniu wysokich standardów programistycznych. Współpraca z zespołami produktowymi i biznesowymi przy realizacji nowych funkcjonalności. Wymagania: Minimum 5 lat doświadczenia w rozwoju aplikacji webowych. Bardzo dobra znajomość: Node.js, React, TypeScript Praktyczne doświadczenie w pracy z usługami AWS . Dobra znajomość baz danych PostgreSQL . Doświadczenie w projektowaniu i rozwijaniu architektury mikroserwisowej lub rozwiązań opartych o usługi chmurowe. Znajomość dobrych praktyk programistycznych, wzorców projektowych oraz zasad Clean Code. Doświadczenie w pracy z systemami kontroli wersji (Git). Umiejętność analitycznego myślenia oraz samodzielnego rozwiązywania problemów. Bardzo dobra znajomość języka angielskiego umożliwiająca pracę w międzynarodowym środowisku.

🏢 Summary: Remote B2B opportunity for an experienced Fullstack Developer focused on building scalable web applications using React, TypeScript, Node.js, and AWS services. The role includes frontend and backend development, cloud integrations, system architecture optimization, and collaboration on technical decisions in an international environment. 🗂️ Requirements: Minimum 5 years of experience in web application development, Strong knowledge of Node.js, Strong knowledge of React, Strong knowledge of TypeScript, Practical experience with AWS services, Knowledge of PostgreSQL, Experience with microservices or cloud-based architectures, Knowledge of Clean Code and design patterns, Experience with Git, Very good English communication skills 📃 Skills: Node.js, React, TypeScript, AWS, ECS, Lambda, S3, DynamoDB, SQS, SES, PostgreSQL, Git 🏢 Description: Informacje o projekcie: Branża: IT Stawka: do 175 zł/h netto + VAT, B2B Lokalizacja: zdalnie Język projektu: angielski, polski Zakres obowiązków: Projektowanie i rozwój skalowalnych rozwiązań webowych. Tworzenie oraz rozwijanie aplikacji frontendowych w oparciu o React i TypeScript . Implementacja i rozwój usług backendowych z wykorzystaniem Node.js oraz TypeScript . Integracja aplikacji z usługami AWS, w szczególności: ECS, Lambda, S3, DynamoDB, SQS, SES. Projektowanie i optymalizacja architektury systemów. Współpraca przy podejmowaniu decyzji technicznych oraz wyborze najlepszych rozwiązań technologicznych. Optymalizacja wydajności, bezpieczeństwa oraz jakości tworzonych rozwiązań. Udział w code review oraz wsparcie zespołu w utrzymaniu wysokich standardów programistycznych. Współpraca z zespołami produktowymi i biznesowymi przy realizacji nowych funkcjonalności. Wymagania: Minimum 5 lat doświadczenia w rozwoju aplikacji webowych. Bardzo dobra znajomość: Node.js, React, TypeScript Praktyczne doświadczenie w pracy z usługami AWS . Dobra znajomość baz danych PostgreSQL . Doświadczenie w projektowaniu i rozwijaniu architektury mikroserwisowej lub rozwiązań opartych o usługi chmurowe. Znajomość dobrych praktyk programistycznych, wzorców projektowych oraz zasad Clean Code. Doświadczenie w pracy z systemami kontroli wersji (Git). Umiejętność analitycznego myślenia oraz samodzielnego rozwiązywania problemów. Bardzo dobra znajomość języka angielskiego umożliwiająca pracę w międzynarodowym środowisku.

🏢 Summary: Frontend role focused on building and enhancing secure API integrations with external brokers using React and TypeScript in a hybrid B2B model. The position involves developing reusable UI components, collaborating with backend teams on financial API integrations, and contributing to code quality in a Scrum environment. 🗂️ Requirements: Experience in frontend development, Proficiency in React, Proficiency in TypeScript, Knowledge of REST APIs, Knowledge of JSON, Ability to work in Scrum teams, Experience with performance standards, Experience with accessibility standards, Collaboration skills, Communication skills 📃 Skills: React, TypeScript, REST, JSON, Scrum, Node.js, CI/CD, Postman 🏢 Description: General info: - Model of work: hybrid, 1x per week work from office in Warsaw - Type of contract: B2B contract - Rate: 130 PLN net + VAT / hour Introduction & Summary: Role requires expertise in frontend development to create and enhance API integrations with external brokers. Ideal candidate should have a strong proficiency in React and TypeScript. You will contribute to building user-friendly and secure interfaces, ensuring smooth integration with partners while adhering to high-quality standards. Main Responsibilities: - Develop reusable, high-quality React + TypeScript components for plugins and internal tools - Work closely with backend engineers to integrate with payment and financial APIs - Ensure performance, accessibility, and responsiveness on partner websites - Contribute to code quality through testing and code reviews - Participate in two-week sprints using Scrum methodology - Collaborate with the Product Owner for requirement clarification - Engage in continuous learning and knowledge sharing within the team Key Requirements: - Proven experience in frontend development - Proficiency in React and TypeScript - Familiarity with REST APIs and JSON - Ability to work in Scrum teams - Experience with performance and accessibility standards - Good collaboration and communication skills Nice to Have: - Knowledge of Node.js - Experience with CI/CD pipelines - Familiarity with tools like Postman - Experience in building embeddable widgets/plugins - Understanding of security and compliance in financial products

🏢 Summary: Long-term B2B opportunity for a senior engineer to deliver production-ready code and shape system architecture in a microservices environment. The role combines hands-on Java and React development with architectural responsibilities in a global, collaborative setup. It focuses on high-frequency delivery and technical excellence within the financial sector. 🗂️ Requirements: Strong Java experience (latest versions), Strong React experience, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Proven high-frequency code delivery, Experience in banking or financial sector 📃 Skills: Java, React, Microservices, REST, PostgreSQL, Banking, Docker, Kubernetes 🏢 Description: Working mode : Hybrid - 6 days per month at the Warsaw office Contract type : B2B, long term cooperation Rate : 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.

🏢 Summary: 12-month contract for a Senior AWS Solution Architect responsible for defining cloud architecture standards and leading on-premise to AWS migrations. The role focuses on driving cloud-native development, ensuring security, scalability, and compliance across solutions, and shaping product and developer onboarding practices. Hybrid work model with 3 days onsite in Warsaw. 🗂️ Requirements: 8+ years of IT experience, Strong hands-on experience with AWS, Experience with on-premise to AWS migrations, Experience with hybrid cloud environments, Experience with microservices architecture, Experience with Docker, Experience with Kubernetes, Ability to design secure and scalable cloud architectures 📃 Skills: AWS, Docker, Kubernetes, Microservices, Cloud, Architecture, Migration, Security, Scalability, Compliance, Hybrid, DevOps 🏢 Description: Senior AWS Solution Architect (contract) Warsaw (3 days onsite) 12 months What you'll do: Own cloud patterns and architecture standards Drive on-prem to AWS migrations and cloud-native development Shape the product roadmap and developer onboarding experience Ensure security, scalability and compliance across solutions What we're looking for: 8+ years in IT, with strong hands-on AWS experience On-prem to AWS migration experience Comfortable with hybrid cloud, microservices, Docker, Kubernetes Great communicator, used to working with global teams Finance sector background a plus Fluent English · B2B in Poland

🏢 Summary: Senior Software Engineer role focused on building a real-time AI platform, owning features end-to-end across frontend, backend, and cloud infrastructure. The position involves developing full-stack solutions and contributing to technical architecture in a remote-first startup environment. 🗂️ Requirements: Strong experience with TypeScript, Strong experience with React, Hands-on experience with AWS, Experience with Docker, Experience with Linux, Experience with Git, Fluent English 📃 Skills: TypeScript, React, AWS, Docker, Linux, Git, Express, Tailwind, WebSockets, LangChain 🏢 Description: 💰 Salary: 25 000 – 28 000 PLN net/month (B2B) + 26 days paid annual leave + equity (ESOP) 📍 Location: Remote (Poland) + meetup in Poznań once per month Our client is an early-stage startup building a real-time AI platform that supports professionals during live conversations. The system processes interactions in real time and delivers contextual insights, knowledge, and guidance while conversations are happening. The founding team has strong experience in distributed systems, AI platforms, and enterprise SaaS and is currently expanding the engineering team to accelerate product development. Role The client is looking for a Senior Software Engineer who enjoys owning features end-to-end, from frontend interfaces to backend services and cloud infrastructure. You will work closely with the founding team on building a real-time AI-powered product , contributing to both product development and technical architecture. Responsibilities Build full-stack features using TypeScript Develop React-based user interfaces Design and maintain backend services and APIs Work with AWS cloud infrastructure Build and run Docker-based services Improve performance and reliability of real-time systems Requirements Strong experience with TypeScript and React Hands-on experience with AWS Experience with Docker and Linux Comfortable working with Git workflows Fluent English Experience working in remote teams Nice to Have Express Tailwind CSS Experience with real-time systems Knowledge of WebSockets / streaming Experience with LLM frameworks (e.g. LangChain) What the Client Offers Opportunity to build a product from an early stage Direct influence on architecture and product direction Work with experienced founders Remote-first environment Competitive salary + equity High level of ownership and autonomy

🏢 Summary: B2B role in the banking sector focused on developing and optimizing cloud infrastructure across private, public, and hybrid environments. The position involves building cloud foundations, supporting application migration, automating infrastructure and incident management, and enhancing performance, security, and scalability. Work is conducted in a hybrid model with close collaboration within a Cloud Centre of Excellence. 🗂️ Requirements: Experience building applications or services on large-scale distributed cloud platforms, Experience delivering Infrastructure as Code using Terraform, Proficiency in automation scripting (Python, JavaScript, or Go), Experience with Kubernetes and CI/CD pipelines including security management, Experience with configuration management and deployment tools, Knowledge of networking security, firewalls, and private networks, Experience integrating systems via REST and Open APIs, Understanding of cybersecurity and security mechanisms, Knowledge of DevOps practices in monitoring, logging, and automation, Availability to work hybrid in Warsaw (2–3 days per week in office) 📃 Skills: Terraform, Python, JavaScript, Go, Kubernetes, CI/CD, REST, OpenAPI, DevOps, Networking, Cybersecurity, Monitoring, Logging, Automation 🏢 Description: Information about the project: Industry: banking Rate: up to 180 pln/h net + VAT, B2B Location: Warsaw (hybrid - 2/3 days per week in the office) Summary: This role involves contributing to the development of Client’s cloud infrastructure, enhancing cloud performance, and ensuring seamless collaboration across teams to achieve business goals. Responsibilities: Contribute to the development of technology for Client’s cloud infrastructure, including private, public, and hybrid cloud environments. Help build the cloud foundation at Client and support application uplift to cloud. Monitor and analyze key metrics within the cloud environment to enhance performance and reliability. Develop automated strategies for incident management within the cloud technologies. Collaborate with other teams in Client’s Cloud Centre of Excellence to align solutions with business goals. Analyze technical requirements about cost optimization, scalability, and performance. Key Requirements: Solid experience building applications or services on a large-scale distributed cloud platform. Experience in delivering Infrastructure as Code utilizing tools such as Terraform. Strong knowledge of automation scripting languages (Python/JavaScript/Go). Exposure to Container Platforms (Kubernetes) and CI/CD pipelines including security management. Experience with Configuration Management and Deployment Tools. Experience with networking security, design principles, and services (firewalls, private networks, etc.). Experience with integration of systems/services through REST and OPEN APIs. Understanding of Cyber Security and general security mechanisms. Knowledge of DevOps best practices related to monitoring, logging, and automation. Excellent interpersonal communication skills and experience in multidisciplinary team collaboration. Preferable experience in financial or other regulated industries.

🏢 Summary: Long-term B2B hybrid role focused on hands-on Java and React development within a microservices architecture, contributing directly to production code and system design. The position emphasizes high-frequency delivery, REST API development, and collaboration in a global engineering environment. It combines technical leadership with active development in financial-sector projects. 🗂️ Requirements: Strong experience with Java, Strong experience with ReactJS, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Recent experience with modern Java versions, Ability to deliver code changes frequently, Background in banking or financial sector 📃 Skills: Java, ReactJS, Microservices, REST, PostgreSQL, Docker, Kubernetes 🏢 Description: Working mode: Hybrid - 6 days per month at the Kraków office Contract type: B2B, long term cooperation Rate: 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.