Software Security Backend Engineer (Node.js and/or Python)

🏢 Summary: Senior Software Security Engineer role in a global banking cybersecurity initiative focused on building secure, scalable cloud-native backend platforms. The position combines hands-on development in Python and/or Node.js with ownership of production services on GCP and Kubernetes. It involves designing modern authentication solutions and distributed systems at enterprise scale. 🗂️ Requirements: Strong hands-on experience with Python (Django) and/or Node.js (TypeScript/NestJS), Experience building production-grade backend services, Experience designing and developing distributed systems, Hands-on experience with GCP services, Strong knowledge of Infrastructure as Code and Terraform, Experience designing scalable and secure cloud-native architectures, Solid knowledge of Kubernetes and containerized environments, Understanding of Zero Trust and modern security engineering practices, Experience with PostgreSQL performance optimization, Experience with event-driven architectures 📃 Skills: Python, Django, NodeJS, TypeScript, NestJS, GCP, Terraform, Kubernetes, PostgreSQL, OAuth2, OpenID, IaC, ZeroTrust, DistributedSystems, CloudNative, Containers, EventDriven, Observability, Automation, Security 🏢 Description: 📍 Location: Kraków (hybrid: 2 days in the office per week) 📄 B2B: 200 - 250 PLN / h 🏦 Industry: Banking We are currently looking for a Senior Software Security Engineer (Node.js and/or Python) to join a strategic global banking initiative focused on building modern, secure and scalable backend platforms within the cybersecurity domain. The role combines hands-on software engineering, cloud-native architecture and security engineering, with strong ownership of production-grade services and engineering excellence. You will work within international cross-functional teams responsible for developing next-generation security products and services, contributing to the migration from vendor-based platforms toward open-source and cloud-native solutions deployed at enterprise scale. Key responsibilities: Design, develop and maintain secure, scalable backend services using Python, Node.js and cloud-native technologies. Build and optimize distributed systems running on Google Cloud Platform and Kubernetes environments. Develop high-quality production code with strong focus on reliability, observability and automation. Own the lifecycle of backend services on GCP, ensuring resilience, performance and cost efficiency. Design and implement OAuth2/OpenID Connect authentication and authorization solutions. Contribute to event-driven architectures and highly concurrent backend systems. Collaborate closely with engineering and platform teams to deliver secure and scalable solutions. Mentor engineers and actively contribute to engineering best practices and technical excellence. Drive automation initiatives to improve developer productivity and operational efficiency. Stay up to date with modern backend and cloud technologies, sharing knowledge across teams. Requirements: Strong hands-on experience with Python (Django) and/or Node.js (Typescript/NestJS). Experience building production-grade backend services and distributed systems. Hands-on experience with GCP services. Strong understanding of Infrastructure as Code and Terraform. Experience designing scalable, secure and observable cloud-native architectures. Solid knowledge of Kubernetes and containerized environments. Understanding of Zero Trust and modern security engineering practices. Experience with PostgreSQL performance optimization and event-driven architectures. Strong engineering mindset with focus on automation, quality and operational excellence. Ability to work effectively in cross-functional and international engineering teams. Nice to have: Experience with Go or Rust. Contributions to open-source projects, technical blogging or public GitHub portfolio. Broad full-stack understanding with backend specialization. Passion for solving complex engineering and security challenges at scale. What we offer: Opportunity to work on strategic, global cybersecurity and cloud engineering initiatives. Collaboration with highly experienced international engineering teams. Long-term cooperation within a stable enterprise-scale environment. Private healthcare package (LuxMed). Multisport card. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Software Engineer role focused on developing and supporting a scalable service platform within capital markets operations. The position combines systems programming, DevOps practices, and enterprise architecture work in a hybrid cloud environment. The engineer will build platform components, automate deployments, and ensure high availability and security of distributed systems. 🗂️ Requirements: 3-5+ years of experience in DevOps, Software Engineering, or Platform Engineering, Strong knowledge of Linux/Unix systems, Experience in C programming or systems-level programming, Understanding of REST APIs and distributed systems, Experience with CI/CD pipelines and deployment automation, Ability to design scalable and secure cloud or hybrid architectures, Experience working in Agile enterprise environments, Ability to provide production support and incident management 📃 Skills: Linux, Unix, C, REST, CI/CD, DevOps, Cloud, APIs, DistributedSystems, Agile, Automation 🏢 Description: 📍 Cracow 🏢 Hybrid: 2 days per week in the office 💰 B2B: 190 - 225 PLN/h We are looking for a Senior Software Engineer to join the technology team of a global financial services organization. The role focuses on supporting the development of a service platform used within capital markets operations. It combines systems development, DevOps practices, and work on scalable, secure enterprise architecture. Responsibilities Design, develop, and maintain platform and infrastructure components Build and maintain CI/CD pipelines and deployment automation Work in Linux/Unix environments and develop low-level/system software (C / systems programming) Contribute to the architecture of distributed systems and APIs Ensure high availability, performance, and security of systems Provide production support (incident management, troubleshooting) Collaborate with global teams in an Agile environment Requirements Minimum 3-5 years of experience in DevOps / Software Engineering / Platform Engineering Strong knowledge of Linux/Unix systems Experience in C programming (or systems-level programming) Understanding of REST APIs and distributed system architectures Experience with CI/CD pipelines and deployment automation Ability to design scalable and secure cloud/hybrid systems Experience working in Agile and enterprise environments Strong communication and analytical skills Nice to have: Java JNI, Node.js, or systems integration experience Experience with monitoring tools (Prometheus, Grafana, ELK stack) Familiarity with financial services or regulated environments We offer Work in a global financial services organization Real impact on a platform used worldwide Modern DevOps / cloud / hybrid technology stack Collaboration with experienced engineering teams across Europe and Asia Benefits package: private medical care (LuxMed) and MultiSport card Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior DevOps Software Engineer role in a global banking transformation programme focused on cloud-native platforms, automation, and distributed systems. The position involves designing, building, and operating scalable cloud infrastructure and CI/CD pipelines in a regulated, production-grade environment. The engineer will support mission-critical services and contribute to automation, reliability, and continuous improvement initiatives. 🗂️ Requirements: Strong experience with GCP and core cloud services, Hands-on experience with CI/CD pipelines, Experience with Jenkins, Git, Maven, SonarQube, Practical knowledge of Terraform and Ansible, Shell scripting skills, Experience operating production-grade cloud services, Knowledge of monitoring and logging tools, Understanding of DLT or blockchain concepts 📃 Skills: GCP, GKE, Jenkins, Git, Maven, SonarQube, Terraform, Ansible, Shell, Kubernetes, PostgreSQL, DLT, Blockchain 🏢 Description: 📍 Location: Kraków (hybrid: 2 days in the office per week, 3 days remote) 📄 B2B: 210 - 250 PLN / h 🏦 Industry: Banking / Financial Services We are currently seeking an experienced Senior DevOps Software Engineer to join a large-scale, global banking transformation programme focused on cloud-native platforms, automation, and distributed systems. The role sits within a high-performing engineering team responsible for building, operating, and evolving mission-critical services in a regulated environment. You will work in a cross-functional, international setup with engineers, architects, and platform specialists, contributing to the design and operation of scalable cloud infrastructure and CI/CD ecosystems. Responsibilities: • Provide end-to-end support across the software delivery and run lifecycle, including development and DevOps activities • Design, build, and maintain Continuous Integration / Continuous Delivery (CI/CD) pipelines using tools such as Jenkins, Git, Maven, and SonarQube • Implement Infrastructure as Code (IaC) using Terraform, Ansible, and scripting (e.g. Shell) • Manage and support cloud-based solutions on Google Cloud Platform (GCP), including Google Kubernetes Engine (GKE), networking, compute, storage, and databases (e.g. PostgreSQL) • Ensure service reliability through monitoring, logging, incident management, and adherence to availability and recovery objectives • Support release management processes and drive automation and continuous improvement initiatives • Collaborate with cross-functional engineering and operations teams to deliver scalable and resilient platforms • Provide post go-live support for Distributed Ledger Technology (DLT) / blockchain-based systems where applicable Requirements: • Strong experience with Google Cloud Platform (GCP), including GKE and core cloud services • Hands-on experience with CI/CD pipelines and tools such as Jenkins, Git, Maven, and SonarQube • Practical knowledge of Infrastructure as Code (Terraform, Ansible, Shell scripting) • Experience supporting and operating production-grade, live services in cloud environments • Familiarity with monitoring, logging, and observability tools • Understanding of Distributed Ledger Technology (DLT) / blockchain concepts (advantageous) • Strong problem-solving skills and ability to design simple solutions for complex challenges • Excellent communication skills and ability to work effectively in cross-functional teams What we offer: • Opportunity to work on large-scale, global banking and cloud transformation initiatives • Exposure to modern cloud-native and DevOps toolchains in a mature engineering environment • Real impact on the design, automation, and reliability of enterprise platforms • Collaboration with international, highly skilled engineering teams • Private medical healthcare (Lux Med) & Multisport card Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Frontend Engineer role in a hybrid model (Kraków) on a B2B contract, focused on building and modernizing user interfaces for a global payments platform in the financial sector. The position involves developing scalable front-end applications and micro frontends, integrating with payment systems, and working in an Agile DevOps environment. The engineer will contribute to high-performance solutions supporting international payment processing across EMEA. 🗂️ Requirements: Strong experience with React 18, Strong experience with TypeScript 5, Strong experience with Bootstrap 5, Experience with REST APIs, Understanding of microservices architecture, Experience with SQL and databases, Experience with Java 8+, Familiarity with JSP, Experience in Agile environments, Experience in DevOps environments 📃 Skills: React, TypeScript, Bootstrap, Java, SQL, REST, Microservices, JSP, CI/CD, Agile, DevOps 🏢 Description: 📍 Location: Kraków, Poland (hybrid - 2 days per week in the office) 📄 B2B Contract: 180 - 200 PLN / hour We are looking for a Senior Frontend Engineer to join an international project delivered for a large organization within the financial services sector. The team is responsible for developing and maintaining a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, and tax transactions. This role focuses on building modern user interfaces and front-end services that support payment processing systems (e.g. SEPA, SWIFT) as well as internal tools used across the EMEA region. You will work in an Agile, DevOps-driven environment, contributing to scalable and high-performance solutions. Key Responsibilities: Develop and maintain modern front-end applications using React, TypeScript, and Java Build UI services and micro frontends supporting payment processing systems Collaborate with backend engineers to integrate APIs and microservices Improve system usability through intuitive interfaces and user-focused design Contribute to reducing operational complexity by building interactive tools and dashboards Support automation initiatives, including test automation and CI/CD improvements Enhance system efficiency and Straight-Through-Processing (STP) capabilities Maintain and modernize legacy UI components (e.g. JSP-based solutions) Work closely with stakeholders and distributed teams across different regions Requirements: Strong hands-on experience with React 18, TypeScript 5, Bootstrap 5 Solid understanding of RESTful APIs and microservices architecture Experience working with SQL and databases Java8+ essential, Java17+ preferable Familiarity with legacy frontend technologies (e.g. JSP) Experience working in Agile / DevOps environments Strong analytical and problem-solving skills English proficiency at B2+ level Nice to Have: Experience in payments / financial systems What We Offer: Long-term cooperation on an enterprise-scale international project Opportunity to work on high-impact global payment systems Real influence on user experience and internal platform development Private medical care (LuxMed) & Multisport card Collaboration with experienced, international engineering teams Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Frontend Engineer role focused on building and maintaining modern UI applications for a global payments platform in the financial sector. The position involves developing scalable front-end solutions and micro frontends supporting payment systems such as SEPA and SWIFT in an Agile, DevOps-driven environment. The engineer will contribute to high-performance interfaces, API integrations, and modernization of legacy UI components. 🗂️ Requirements: Strong hands-on experience with React 18, Strong hands-on experience with TypeScript 5, Experience with Bootstrap 5, Solid understanding of RESTful APIs, Experience with microservices architecture, Experience with SQL and relational databases, Proficiency in Java 8 or higher, Familiarity with JSP or legacy frontend technologies, Experience working in Agile environments, Experience working in DevOps environments, English proficiency at B2+ level 📃 Skills: React, TypeScript, Bootstrap, Java, SQL, REST, Microservices, JSP, SEPA, SWIFT, CI/CD, Agile, DevOps 🏢 Description: 📍 Location: Kraków, Poland (hybrid - 2 days per week in the office) 📄 B2B Contract: 180 - 230 PLN / hour We are looking for a Senior Frontend Engineer to join an international project delivered for a large organization within the financial services sector. The team is responsible for developing and maintaining a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, and tax transactions. This role focuses on building modern user interfaces and front-end services that support payment processing systems (e.g. SEPA, SWIFT) as well as internal tools used across the EMEA region. You will work in an Agile, DevOps-driven environment, contributing to scalable and high-performance solutions. Key Responsibilities: Develop and maintain modern front-end applications using React, TypeScript, and Java Build UI services and micro frontends supporting payment processing systems Collaborate with backend engineers to integrate APIs and microservices Improve system usability through intuitive interfaces and user-focused design Contribute to reducing operational complexity by building interactive tools and dashboards Support automation initiatives, including test automation and CI/CD improvements Enhance system efficiency and Straight-Through-Processing (STP) capabilities Maintain and modernize legacy UI components (e.g. JSP-based solutions) Work closely with stakeholders and distributed teams across different regions Requirements: Strong hands-on experience with React 18, TypeScript 5, Bootstrap 5 Solid understanding of RESTful APIs and microservices architecture Experience working with SQL and databases Java8+ essential, Java17+ preferable Familiarity with legacy frontend technologies (e.g. JSP) Experience working in Agile / DevOps environments Strong analytical and problem-solving skills English proficiency at B2+ level Nice to Have: Experience in payments / financial systems What We Offer: Long-term cooperation on an enterprise-scale international project Opportunity to work on high-impact global payment systems Real influence on user experience and internal platform development Private medical care (LuxMed) & Multisport card Collaboration with experienced, international engineering teams Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Software Engineer role focused on designing, building, and supporting scalable applications in the financial domain within a small Agile team. The position covers the full software development lifecycle, including analysis, design, implementation, testing, deployment, and production support. It emphasizes microservices and event-driven architecture with strong engineering standards and ownership. 🗂️ Requirements: Minimum 5 years of professional software development experience, Strong knowledge of Java, Strong knowledge of Python, Hands-on experience with Spring Framework, Understanding of SOLID principles, Knowledge of Clean Code practices, Experience with DDD and BDD, Experience with SQL and NoSQL databases, Experience with PostgreSQL, Experience with MongoDB, Familiarity with microservices architecture, Experience with event-driven or streaming systems 📃 Skills: Java, Python, Spring, SQL, NoSQL, PostgreSQL, MongoDB, Microservices, EventDriven, SOLID, CleanCode, DDD, BDD 🏢 Description: Senior Software Engineer 📍 Kraków, Poland (hybrid – min. 2 days/week in the office) 🕒 Full-time | B2B 190-230PLN netto/h About the Role We are looking for an experienced Senior Software Engineer to join a global technology team delivering innovative digital solutions in the financial domain. In this role, you will work closely with a Development Manager and a small, cross-functional team to build and maintain scalable applications. You will be involved in the entire software development lifecycle – from analysis and design to deployment and production support. This is a hands-on role in a collaborative environment where teams take full ownership: “you build it, you support it.” Your Responsibilities Work in a small Agile team (4–6 people) with a dedicated Product Owner Translate business requirements into user stories and deliver them iteratively to production Design and implement high-quality, scalable solutions aligned with technical standards Participate in all stages of the development lifecycle, including testing and production support Identify and manage technical debt, balancing it with new feature development Collaborate closely with team members through pairing and knowledge sharing Contribute to a culture of continuous improvement and experimentation Required Skills & Experience Minimum 5 years of professional software development experience Strong knowledge of Java and Python Hands-on experience with Spring Framework Solid understanding of software engineering principles ( SOLID, Clean Code, DDD, BDD ) Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB) Familiarity with microservices architecture Experience with event-driven systems / streaming technologies Strong communication skills in English (written and spoken) Ability to collaborate, mentor, and support other engineers Nice to Have Experience with JavaScript (Vue.js) Background in AI / Machine Learning / NLP / Data Science Knowledge of: Prompt Engineering LangChain / LangGraph Clean Architecture What You Can Expect Work in a globally distributed engineering organization Small, self-organizing teams with strong ownership Continuous delivery approach (no traditional sprints – focus on flow and frequent releases) Opportunity to work on cutting-edge AI-driven solutions Exposure to modern technologies and experimentation with new tools A collaborative culture where learning, pairing, and knowledge sharing are encouraged Benefits: Multisport Card and Luxmed Who We’re Looking For We value engineers who: Are curious, adaptable, and open to experimentation Enjoy solving complex problems with technology Take ownership and responsibility for their work Are comfortable stepping outside their specialization when needed See failure as a learning opportunity Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Hybrid B2B opportunity for a Senior or Lead Software Engineer focused on Big Data platforms within Risk & Compliance for a global banking environment. The role involves building scalable data processing solutions, ETL pipelines, and analytics platforms using Spark and Java/Scala in an Agile international team. Engineers will collaborate with architects, analysts, and data scientists while contributing to CI/CD, TDD, and large-scale surveillance and risk management systems. 🗂️ Requirements: Commercial experience with Apache Spark, Strong programming skills in Java, Strong programming skills in Scala, Experience building large-scale data processing solutions, Knowledge of software engineering best practices, Experience working in Agile environments, Ability to collaborate in international teams, Strong communication skills, English level B2 or higher 📃 Skills: Spark, Java, Scala, Hadoop, YARN, HDFS, Spring, Airflow, SQL, Elasticsearch, Python, GCP, Maven, Git, CI/CD, TDD, ETL, Agile 🏢 Description: Senior Software Engineer / Lead Software Engineer (Big Data) 📍 Location: Kraków, Poland 🏢 Work mode: hybrid, 2 days per week from the office 💰 Rate: 180-250 PLN/h B2B About the Project: Join a global technology team within the Risk & Compliance domain of a leading international banking organization. The team develops cutting-edge solutions that help protect customers and the business from financial crime, market abuse, identity threats, regulatory risks, and other compliance-related challenges. You will become part of a global Agile team responsible for building modern data platforms and big data solutions that support large-scale surveillance and risk management initiatives. This role offers the opportunity to work on highly impactful systems, collaborating with engineers, architects, analysts, and data scientists from around the world. Your Responsibilities: Collaborate with Product Owners and Business Analysts to understand business and stakeholder requirements Design, develop, and maintain data processing components and storage solutions Onboard new data sources and build scalable ETL/data processing pipelines Work closely with Data Scientists to productionize analytical models and solutions Develop software following CI/CD and Test-Driven Development (TDD) practices Partner with Solution Architects to validate and implement technical designs Perform unit testing and ensure high code quality standards Contribute to the continuous improvement of development processes and engineering practices Requirements: Must Have: Strong commercial experience with Apache Spark Solid programming experience in Java/Scala Experience building large-scale data processing solutions Understanding of software engineering best practices and Agile methodologies Strong communication skills and ability to work effectively in an international team English proficiency at B2 level or higher Nice to Have: Experience with Apache Hadoop (YARN, HDFS) Knowledge of Spring Framework Experience with Apache Airflow Experience working with SQL databases and Elasticsearch Python programming skills Experience deploying services on Google Cloud Platform (GCP) Familiarity with Maven and Git What We Offer: Benefits package: private healthcare ( LuxMed ), sports package ( Multisport ) Opportunity to work on global-scale Big Data solutions Collaboration with international teams and industry experts Modern technology stack and challenging engineering environment Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Backend engineering role focused on building scalable IoT platform solutions and middleware in a distributed cloud environment. The position involves developing REST APIs, WebSocket communication, asynchronous integrations, and data models for mobile and web systems. Work includes cloud deployments, CI/CD, and maintaining high software quality through testing practices. 🗂️ Requirements: Strong commercial experience with C#/.NET 6 or Node.js with TypeScript, Understanding of microservices architecture, Knowledge of REST standards, Experience with event-driven systems, Hands-on experience with RabbitMQ or Azure Service Bus, Experience with relational databases (SQL Server or PostgreSQL), Experience with NoSQL databases (MongoDB, Redis, or Cosmos DB), Familiarity with Azure cloud environment, Experience with Docker and Kubernetes, Experience with Linux-based systems, Experience with CI/CD pipelines, Experience with TDD, unit testing, and integration testing 📃 Skills: C#, NET, Node.js, TypeScript, REST, WebSocket, RabbitMQ, Azure, SQL, PostgreSQL, SQLServer, MongoDB, Redis, CosmosDB, Docker, Kubernetes, Linux, CI/CD, TDD, Microservices 🏢 Description: Senior Backend Engineer (C#/ Node.js) -  IoT Projects We are looking for an experienced Backend Developer to join a team building modern IoT platform solutions and scalable backend services. The role focuses on developing API and middleware layers used by mobile, web, and internal systems within a distributed cloud-based environment. Additional information Work mode: Hybrid (Wrocław) or fully remote Rate: 110 - 140 PLN/h Responsibilities Design and develop backend applications and middleware components for scalable IoT solutions. Build and maintain REST APIs, WebSocket communication, and asynchronous integrations. Create and optimize data models using relational and NoSQL databases. Cooperate on cloud deployments, CI/CD processes, and infrastructure automation. Ensure high software quality through TDD, unit testing, and integration testing. Work closely with cross-functional teams in an Agile environment. Requirements Strong commercial experience with either C#/.NET 6 or Node.js with TypeScript. Very good understanding of microservices architecture, REST standards, and event-driven systems. Hands-on experience with message brokers such as RabbitMQ or Azure Service Bus. Practical knowledge of relational databases (SQL Server/PostgreSQL) and NoSQL solutions (MongoDB, Redis, Cosmos DB). Familiarity with cloud and containerized environments, including Azure, Docker, Kubernetes, or Linux-based systems. Experience working with CI/CD pipelines and modern deployment practices. Good communication skills and fluent English. Nice to have Knowledge of Git workflows and version control best practices. Experience with monitoring and logging tools in cloud environments. Familiarity with Agile/Scrum methodologies. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Cloud DevOps Engineer role focused on designing, automating, and maintaining cloud and on-prem infrastructure for a mission-critical, high-volume financial platform operating in a distributed microservices architecture. The position involves building scalable IaC solutions, managing CI/CD pipelines, and ensuring high availability, security, and performance in a DevSecOps model across global teams. The role supports production systems in a highly controlled, enterprise-grade environment. 🗂️ Requirements: 8+ years of experience in DevOps / Cloud / Infrastructure engineering, Strong experience with Google Cloud Platform (GCP) including GKE, Cloud SQL, Pub/Sub, BigQuery, Cloud Operations, Hands-on experience with Jenkins, Ansible, Terraform, Docker, GitHub, Advanced scripting skills in Python or Shell, Strong Linux administration skills, Experience with containerized environments, Experience designing and maintaining CI/CD pipelines, Knowledge of PostgreSQL and relational databases, Experience with messaging systems (IBM MQ or similar) and sFTP, Understanding of TLS, certificates, secure communication protocols, Experience working with REST APIs using Python or Shell, Strong troubleshooting skills in network and distributed systems, Understanding of DevSecOps principles 📃 Skills: GCP, GKE, CloudSQL, PubSub, BigQuery, CloudOperations, Jenkins, Ansible, Terraform, Docker, GitHub, Python, Shell, Linux, Kubernetes, PostgreSQL, Oracle, IBMMQ, sFTP, TLS, REST 🏢 Description: 📍 Location: Kraków (hybrid: 2 days in the office / 3 days remote) 💰 B2B: 200 - 230 PLN/h We are looking for an experienced Senior Cloud DevOps Engineer to join a global engineering team supporting a mission-critical collateral and margining platform used within a large international financial institution. The platform supports high-volume daily processing for thousands of global banking clients and operates in a distributed microservices architecture across on-prem and cloud environments. The team operates in a DevSecOps model, collaborating across multiple global locations and delivering frequent production releases in a highly controlled, high-availability environment. Responsibilities • Design, develop, and maintain cloud and on-prem infrastructure for critical enterprise applications • Work with development teams to understand infrastructure requirements and translate them into scalable architectural solutions • Prepare and maintain technical design documentation and participate in architecture reviews • Build and maintain Infrastructure as Code (IaC) and automation tooling • Develop automation for operational tasks in Linux environments • Manage CI/CD pipelines and deployment processes across production and non-production environments • Ensure high availability, performance, scalability, and security of systems (cloud and on-prem) • Collaborate with SRE, DBA, networking, storage, and Linux teams to support production systems • Own build, release, and configuration management processes • Implement and maintain integration connectivity (MQ, sFTP, REST, file-based interfaces) • Identify opportunities for automation and reduce manual operational effort • Support Service Management activities (DR, backups, patching, upgrades, vulnerability management) • Troubleshoot complex infrastructure, application, and network issues • Perform system analysis and recommend improvements for performance and reliability Requirements • 8+ years of hands-on experience in DevOps / Cloud / Infrastructure engineering roles • Strong experience with Google Cloud Platform (GCP), including services such as GKE, Cloud SQL, Pub/Sub, BigQuery, and Cloud Operations • Strong hands-on experience with DevOps tooling: Jenkins, Ansible, Terraform, Docker, GitHub • Advanced scripting skills in Python and/or Shell (Go is a plus) • Strong Linux administration skills and experience with containerized environments • Experience in CI/CD pipeline design, implementation, and maintenance • Good knowledge of PostgreSQL and relational databases (Oracle experience is a plus) • Experience with messaging systems (IBM MQ or similar) and sFTP connectivity • Understanding of TLS, certificates, and secure communication protocols • Experience working with REST APIs using Python/Shell • Strong troubleshooting skills (network, infrastructure, distributed systems) • Solid understanding of DevSecOps principles • Excellent communication and stakeholder management skills • Ability to translate business and functional requirements into technical solutions • Proactive mindset with ability to work in a fast-paced, global environment Nice to Have • Experience in Java / microservices-based environments • Exposure to Solace or similar messaging platforms • Experience managing GCP projects using Terraform at scale • Hands-on experience with Kubernetes (K8S), Flux CD, GitOps practices • Familiarity with AI-assisted development tools (e.g., GitHub Copilot) • Experience in banking / financial services domain • Experience with supply of large-scale distributed systems in enterprise environments What We Offer • Work on a global, high-scale cloud and collateral platform within financial services • Long-term B2B cooperation • Exposure to modern cloud transformation and DevSecOps practices • Collaboration with international teams across multiple regions • Private medical care (LuxMed) • Sports card (Multisport) Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Quality Engineer role focused on automated testing and quality assurance for backend and IoT solutions in cloud-based, microservices environments. The position involves backend validation, API and integration testing, and ensuring data consistency across distributed systems. Work includes collaboration within Agile teams and support of CI/CD-driven, containerized platforms. 🗂️ Requirements: Strong programming skills in C# or Node.js/JavaScript, Experience in backend testing and automated test development, Knowledge of microservices architecture, Practical experience testing REST APIs and backend integrations, Hands-on experience with Azure cloud environments, Experience with MSSQL and MongoDB databases, Familiarity with Docker, RabbitMQ, and Redis, Understanding of CI/CD pipelines and tools, Experience working in Agile/Scrum teams 📃 Skills: C#, .NET, Node.js, JavaScript, REST, Azure, Docker, RabbitMQ, Redis, MSSQL, MongoDB, CICD, AzureDevOps, Jenkins, Microservices, MQTT, xUnit, NUnit, Mocha, Jest 🏢 Description: Senior Quality Engineer | Backend & IoT Platforms We are looking for a Senior Quality Engineer to support testing and quality assurance activities for modern backend and IoT-based solutions running in cloud environments. This role combines automated testing, backend validation, and close cooperation with development teams working on distributed microservices architecture. Additional information Work mode: Fully remote or hybrid (Wrocław) Rate: 100–120 PLN/h Responsibilities Develop and maintain automated test solutions using C#/.NET or Node.js technologies. Verify and test REST APIs, backend integrations, and asynchronous communication flows. Analyze and validate data consistency across relational and NoSQL databases. Support testing processes within containerized and CI/CD-based environments. Collaborate with developers, analysts, and stakeholders to ensure software quality and delivery standards. Maintain technical documentation and track progress using Jira and Confluence. Requirements Strong programming skills in C# or Node.js/JavaScript combined with backend testing experience. Practical knowledge of microservices architecture, REST APIs, and cloud-based solutions. Hands-on experience with Azure environments and backend integration testing. Familiarity with Docker, RabbitMQ, and Redis. Experience working with MSSQL and MongoDB databases. Understanding of CI/CD pipelines and tools such as Azure DevOps or Jenkins. Experience working in Agile/Scrum teams. Nice to have ISTQB Advanced Technical Test Analyst certification. Familiarity with IoT communication protocols such as MQTT. Experience with testing frameworks including xUnit, NUnit, Mocha, or Jest. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland