Senior Python Developer

🏢 Summary: Offer for a Python Developer with 3+ years of experience to design, develop, and maintain scalable applications and services. The role focuses on writing clean, testable code, applying design patterns, and performing data processing using scientific libraries. The position involves building efficient solutions with proper algorithms, data structures, and unit testing practices. 🗂️ Requirements: Minimum 3 years commercial experience with Python, Practical knowledge of NumPy, Practical knowledge of pandas, Understanding of software design patterns, Knowledge of algorithms, Knowledge of data structures, Experience writing unit tests 📃 Skills: Python, NumPy, pandas, Algorithms, DataStructures, UnitTesting, DesignPatterns, gRPC, GCP 🏢 Description: Python Developer We are looking for a skilled Python Developer with at least 3 years of professional experience to join our team and contribute to the development of high-quality software solutions. The ideal candidate has strong Python expertise, a solid understanding of software engineering principles, and a passion for clean, efficient, and testable code. Responsibilities: Design, develop, and maintain applications and services using Python Write clean, efficient, and well-structured code in line with best practices and design patterns Perform data processing and analysis using libraries such as NumPy and pandas Develop and maintain unit tests to ensure code quality and reliability Collaborate with cross-functional teams to design and deliver new features Apply appropriate algorithms and data structures to build scalable and efficient solutions Participate in code reviews and contribute to continuous improvement Requirements: Minimum 3 years of commercial experience working with Python Practical knowledge of NumPy and pandas libraries Good understanding of software design patterns Solid knowledge of algorithms and data structures Experience in writing unit tests Openness to a hybrid work model (working from the Kraków office once per week) Nice to have: Experience with gRPC Familiarity with Google Cloud Platform (GCP) 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: The offer is for a Python Developer with at least 3 years of experience to design, develop, and maintain scalable applications and services. The role focuses on writing clean, testable code, applying algorithms and design patterns, and performing data processing using scientific libraries. It involves contributing to high-quality software solutions in a collaborative, hybrid work environment. 🗂️ Requirements: Minimum 3 years of commercial experience with Python, Practical knowledge of NumPy, Practical knowledge of pandas, Understanding of software design patterns, Knowledge of algorithms and data structures, Experience in writing unit tests, Availability for hybrid work model (once per week in Kraków office) 📃 Skills: Python, NumPy, pandas, Algorithms, DataStructures, UnitTesting, gRPC, GCP 🏢 Description: Python Developer We are looking for a skilled Python Developer with at least 3 years of professional experience to join our team and contribute to the development of high-quality software solutions. The ideal candidate has strong Python expertise, a solid understanding of software engineering principles, and a passion for clean, efficient, and testable code. Responsibilities: Design, develop, and maintain applications and services using Python Write clean, efficient, and well-structured code in line with best practices and design patterns Perform data processing and analysis using libraries such as NumPy and pandas Develop and maintain unit tests to ensure code quality and reliability Collaborate with cross-functional teams to design and deliver new features Apply appropriate algorithms and data structures to build scalable and efficient solutions Participate in code reviews and contribute to continuous improvement Requirements: Minimum 3 years of commercial experience working with Python Practical knowledge of NumPy and pandas libraries Good understanding of software design patterns Solid knowledge of algorithms and data structures Experience in writing unit tests Openness to a hybrid work model (working from the Kraków office once per week) Nice to have: Experience with gRPC Familiarity with Google Cloud Platform (GCP) 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 role for an experienced AWS Python Developer supporting a strategic cloud engineering initiative in the banking sector. The position focuses on building secure, scalable and automated AWS solutions aligned with a Cloud First strategy within international Agile teams. It combines hands-on Python development, DevOps automation, Infrastructure as Code and cloud security in enterprise-scale environments. 🗂️ Requirements: Strong hands-on Python development and automation experience, Practical experience with AWS services in enterprise environments, Experience with CI/CD tools: Jenkins, Git, Ansible, Experience with Infrastructure as Code using Terraform, Knowledge of DevOps practices and Agile methodologies, Experience deploying and troubleshooting cloud-based solutions, Knowledge of Linux or Windows operating systems, Understanding of AWS cloud security principles, Experience with automation and operational support processes 📃 Skills: Python, AWS, Jenkins, Git, Ansible, Terraform, Linux, Windows, CI/CD, DevOps 🏢 Description: 📍 Kraków | Hybrid: 2 days office / 3 days remote 📄 B2B: 180 – 230 PLN/h 🏦 Industry: Banking We are currently looking for an experienced AWS Python Developer to join a strategic cloud engineering initiative within the banking sector. The role focuses on supporting enterprise-scale cloud adoption and building secure, scalable and automated AWS-based solutions aligned with a Cloud First strategy. You will work within international engineering teams responsible for developing and supporting modern cloud platforms across a broad AWS ecosystem. This position combines hands-on Python development, AWS engineering, DevOps automation and cloud security, with a strong focus on operational resilience, scalability and secure infrastructure delivery. Key responsibilities Design, develop and support cloud-native solutions within AWS environments Collaborate with application teams to deploy and optimize applications on AWS platforms Develop automation solutions and operational tooling using Python Build and maintain Infrastructure as Code solutions using Terraform where required Develop and enhance security controls aligned with cloud security best practices Support compliance dashboard improvements and operational monitoring initiatives Participate in major incident investigations and provide rotational 24/7 support coverage Design and maintain CI/CD pipelines using Jenkins, Git and Ansible Contribute to automation, scalability and operational excellence initiatives across cloud environments Collaborate with international engineering and infrastructure teams in Agile delivery environments Ensure alignment with secure engineering standards, compliance requirements and DevOps best practices Requirements Strong hands-on experience with Python development and automation Practical experience working with AWS services in enterprise-scale environments Strong knowledge of CI/CD tooling including Jenkins, Git and Ansible Experience with Infrastructure as Code solutions such as Terraform Good understanding of DevOps practices and Agile delivery methodologies Experience deploying, supporting and troubleshooting cloud-based solutions Good knowledge of Linux and/or Windows operating systems Strong understanding of cloud security principles and secure solution delivery in AWS environments Experience working with automation, deployment and operational support processes Ability to work effectively within international and cross-functional engineering teams Strong engineering mindset focused on ownership, reliability and automation Nice to have Experience with non-functional testing practices Knowledge of risk management and regulatory compliance processes Experience working within highly regulated enterprise environments Experience supporting large-scale cloud transformation initiatives Passion for cloud technologies, automation and continuous improvement What we offer Opportunity to work on strategic global cloud engineering initiatives Collaboration with highly experienced international engineering teams Long-term cooperation within a stable enterprise-scale environment Hybrid working model with flexible remote work opportunities Private healthcare package 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: Full-time/B2B role for an experienced Python Developer to extend and enhance an existing quantitative model in the financial sector. The position involves backend model development, data processing, SQL Server integration, and ensuring comprehensive automated test coverage. Hybrid work model with close collaboration with Front Office and Product Control teams. 🗂️ Requirements: 3+ years commercial experience in similar role, Strong practical experience with Python, Strong practical experience with SQL Server, Experience with Pandas for data processing, Experience with FastAPI and web APIs, Experience developing quantitative models in Python, Experience implementing unit, integration, and regression tests 📃 Skills: Python, Pandas, SQL, SQLServer, FastAPI, APIs, UnitTesting, IntegrationTesting, RegressionTesting, C++, IFRS9, AssetBackedSecurities 🏢 Description: For our Client we are looking for an experienced Developer (Python, Pandas, SQL) who will be responsible for extension of existing python model. 📍 Location : Kraków, hybrid work model – 2 days per week in the office, 3 days remote 🕒 Cooperation model: [Full-time / B2B] 📍 Project for our Client from the financial sector Key Responsibilities: Extension of existing python model Engagement with Front Office and Product Control on development requirements Ensuring automated tests coverage (unit, integration and regression tests) Engagement with stakeholders for expectation setting and delivery of the changes Requirements: 3+ years of commercial experience in similar position Strong knowledge & practical experience with Python and SQL Server Experience with data processing in python (Pandas) and understanding of web APIs (FastAPI) Experience with developing quantitative models in python Readiness to work in a challenging environment of quantitative analysts Fluency in English (both spoken and written) Good communication skills, willingness to learn, attention to details and consideration of timelines Nice to have: Experience in C++ (some core components of infrastructure are written in that language) Knowledge of Asset Backed Securities and the relevant IFRS9 regulations Benefits: Private medical care (Luxmed) Multisport card Collaborative team culture and modern tech stack 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 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 Security Engineer role focused on building secure, scalable backend platforms within a global banking cybersecurity initiative. The position combines hands-on development in Node.js and/or Python with cloud-native architecture on GCP and Kubernetes, emphasizing security, automation and production-grade reliability. You will design and own distributed, event-driven services while driving engineering excellence and cloud transformation. 🗂️ Requirements: Strong hands-on experience with Python (Django) and/or Node.js (TypeScript, NestJS), Experience building production-grade backend services, Experience with distributed systems, Hands-on experience with Google Cloud Platform, Experience with Infrastructure as Code, Practical knowledge of Terraform, Strong knowledge of Kubernetes, Experience with containerized environments, Experience designing secure, scalable cloud-native architectures, Knowledge of OAuth2 and OpenID Connect, Understanding of Zero Trust principles, Experience with PostgreSQL performance optimization, Experience with event-driven architectures 📃 Skills: Python, Django, Node.js, TypeScript, NestJS, GCP, Kubernetes, Terraform, OAuth2, OpenID, PostgreSQL, Docker, IaC, ZeroTrust 🏢 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: Hybrid Production Support / SRE role supporting mission-critical payment systems in a global financial environment. The position focuses on ensuring high availability, stability, and performance of payment platforms through incident management, automation, and infrastructure improvements. You will work with modern containerized environments and observability tools in a 24/7 production setting. 🗂️ Requirements: Commercial experience in Production Support, SRE, DevOps, or similar role, Strong knowledge of Linux operating systems, Hands-on experience with Kubernetes, Experience with SQL and Oracle databases, Practical knowledge of PL/SQL, Experience with Bash, Python, or Java scripting, Understanding of application architecture and networking, Experience with monitoring and troubleshooting tools, Experience working with CI/CD pipelines, Experience in Agile environments, Ability to work in high-availability, production-critical environments 📃 Skills: Linux, Kubernetes, SQL, Oracle, PLSQL, Bash, Python, Java, Splunk, AppDynamics, CICD, Agile, SRE, Networking 🏢 Description: 📍 Kraków, Poland (hybrid – 8 days per month in the office) About the Project Join an international team supporting critical payment systems for a global organization in the financial services sector. As part of the Payments IT department, you will help ensure the stability, reliability, and performance of platforms responsible for payment processing, orchestration, messaging, and financial compliance. This role is ideal for engineers who enjoy solving complex production issues, automating operational processes, and working with modern infrastructure technologies in a high-availability environment. You'll collaborate with distributed teams across multiple regions and contribute to the continuous evolution of mission-critical systems operating 24/7. Your Responsibilities Provide production support for business-critical applications and services Diagnose incidents, perform root cause analysis, and implement long-term preventive solutions Deploy, maintain, and enhance applications and internally developed tools Support release management and testing activities related to system enhancements Monitor system health, performance, and availability using modern observability tools Investigate application, infrastructure, and database issues across multiple technology layers Drive automation initiatives and operational improvements aligned with SRE principles Collaborate closely with development, infrastructure, and business teams across global locations Participate in on-call support and contribute to maintaining highly available production environments Support continuous improvement initiatives within Agile and DevOps frameworks What We're Looking For Must-have Commercial experience in Production Support, Site Reliability Engineering, DevOps, or a similar role Strong knowledge of Linux operating systems Hands-on experience with Kubernetes Practical experience working with SQL and Oracle databases (PL/SQL) Experience with scripting or automation using Bash, Python, or Java Understanding of application architecture, including operating systems, networking, databases, and application layers Familiarity with monitoring and troubleshooting tools such as Splunk , AppDynamics , or similar solutions Experience working in Agile environments and with CI/CD pipelines Strong analytical mindset and problem-solving skills Ability to work effectively in high-pressure, production-critical environments English proficiency at B2+ level Nice to Have Experience within the payments, banking, or financial services sector Knowledge of configuration management tools such as Ansible or Puppet Experience with Infrastructure as Code and automation practices Additional programming experience in Python or Java Familiarity with Site Reliability Engineering (SRE) methodologies What We Offer ✅ Long-term cooperation on a large-scale international project ✅ Opportunity to work with mission-critical financial systems used globally ✅ Exposure to modern cloud-native and containerized environments ✅ Collaboration with experienced engineering teams across multiple countries ✅ Real impact on system reliability, performance, and operational excellence ✅ Private medical care (LuxMed) ✅ Multisport card ✅ Hybrid work model with a modern office in Kraków Interested? If you enjoy troubleshooting complex systems, automating operational processes, and working with modern technologies in a fast-paced production environment, we'd love to hear from you. 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 Data Engineer role focused on building and optimizing data integration and retrieval solutions that power Generative AI systems, including AI agents and RAG pipelines. The position involves designing scalable data pipelines and Python-based microservices integrated with large-scale GenAI platforms. The engineer will contribute to architecture and ensure high performance, reliability, and security of data services. 🗂️ Requirements: 5+ years of experience in software or data engineering with strong focus on Python, Hands-on experience with FastAPI and microservices, Experience with API-driven architectures, Experience with databases or data platforms (MongoDB, PostgreSQL, Hadoop, BigQuery, Starburst or similar), Understanding of vector stores, embeddings or semantic search concepts, Experience with cloud platforms (GCP or Azure), Solid understanding of Unix/Linux environments, Strong debugging skills 📃 Skills: Python, FastAPI, Microservices, APIs, MongoDB, PostgreSQL, Hadoop, BigQuery, Starburst, GCP, Azure, Linux, Unix, Vectorstores, Embeddings, SemanticSearch, Debugging 🏢 Description: Senior Data Engineer (Python / GenAI) 📍 Location: Kraków, Poland (hybrid: 2 days in the office, 3 days remote) 📄 B2B Contract: 210 – 260 PLN / hour We are looking for a proactive Senior Data Engineer (Python / GenAI) to join an international team building advanced data integration and retrieval solutions powering Generative AI across the organization. You will work closely with Engineers, Architects and AI Specialists to design, build and optimize data flows that directly support AI agents, RAG pipelines and large‑scale GenAI applications. This role sits within a collaborative engineering environment and offers the opportunity to influence architecture, development standards and the overall quality of next‑generation AI‑driven systems. Key Responsibilities: Design and develop data integration components enabling GenAI models to access and process data from multiple internal systems. Build and maintain data transfer pipelines ensuring scalability, reliability and security. Develop Python‑based microservices (FastAPI) integrated with broader GenAI platforms. Work with vector stores, memory stores and RAG pipelines to optimize data retrieval and context generation for AI agents. Collaborate with cross‑functional teams to align data integrations with overall GenAI architecture. Implement monitoring, observability and performance tuning for data services. Participate in Agile ceremonies: sprint planning, reviews, retrospectives and daily stand‑ups. Requirements: 5+ years of experience in software or data engineering with strong focus on Python . Hands‑on experience with FastAPI , microservices and API‑driven architectures. Experience with databases and data platforms such as MongoDB, PostgreSQL, Hadoop, BigQuery, Starburst or similar. Understanding of vector stores , embeddings or semantic search concepts. Experience working with cloud platforms (GCP or Azure). Solid understanding of Unix/Linux environments. Strong debugging skills and ability to clearly communicate findings. Nice to Have: Experience with RAG pipelines , context engineering or evaluation systems. Knowledge of Google ADK or similar AI development toolkits. Experience with memory stores or caching systems. Exposure to GenAI platforms, LLM‑based solutions or AI agents. Familiarity with DevOps practices and CI/CD pipelines. What We Offer: Long‑term cooperation within a high‑impact, innovative AI programme. Real influence on architecture, engineering standards and data integration strategy. Work in a multicultural, distributed environment. Private medical care (LuxMed) and Multisport card. Stable B2B contract with competitive hourly rate. To learn more about Antal, please visit www.antal.pl

🏢 Summary: Backend engineering role focused on designing, developing, and deploying scalable microservices-based applications in a continuous delivery environment. The position involves building production-ready systems, contributing to architecture decisions, and ensuring high performance and maintainability. The role requires close collaboration within globally distributed teams to deliver high-quality digital solutions. 🗂️ Requirements: Proven experience in backend software engineering, Hands-on experience with microservices architecture, Experience delivering production-ready applications, Experience with continuous delivery and frequent releases, Experience building and maintaining RESTful APIs, Strong experience with PostgreSQL including schema design and optimization 📃 Skills: Backend, Microservices, REST, PostgreSQL, SQL, ContinuousDelivery, APIs 🏢 Description: Location: Kraków Work mode: hybrid with 6-8 days/month from the office Salary: up to 200 PLN/h + VAT on B2B contract About the Team: You will join a globally distributed engineering team focused on building scalable, high-quality digital solutions using modern technologies and microservices architecture. The team emphasizes collaboration, continuous delivery, engineering excellence, and innovation, working closely with stakeholders across regions to deliver impactful business outcomes. Key Responsibilities: Design, develop, and deploy high-quality, production-ready code within a microservices-based architecture. Contribute to system architecture and technical design decisions, ensuring scalability, performance, and maintainability. Maintain awareness of business objectives alongside engineering and non-functional requirements to support product growth. Promote and uphold strong engineering culture, including best practices, code quality, and continuous improvement. Collaborate closely with globally distributed teams, coordinating across multiple regions and time zones. Proactively identify and remove delivery impediments, manage risks, and communicate issues to program stakeholders. Analyze development and delivery processes to identify inefficiencies and implement innovative, automated solutions. Required Experience & Skills: Strong background in software engineering with proven expertise in designing, developing, and deploying backend applications. Hands-on experience working with microservice architectures and delivering production-ready solutions. Demonstrated ability to deliver frequent, high-quality releases in a continuous delivery environment. Experience building and maintaining RESTful APIs in production systems. Solid experience working with PostgreSQL databases, including schema design and optimization. Preferred Qualifications: Proficiency in Java, ideally with recent experience using modern versions. Understanding of containerization and orchestration technologies such as Docker and Kubernetes, as well as cloud platforms (preferably GCP). Experience developing modern frontend applications using ReactJS. Previous experience working in the financial services sector, particularly in banking environments. This role is ideal for a proactive and delivery-focused engineer who thrives in a collaborative, fast-paced environment and is passionate about building scalable, modern applications. 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 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.