Senior C# Developer

🏢 Summary: Backend Python Developer role within a structured rates products team, building and maintaining analytics microservices for pricing and valuation of financial instruments in a banking environment. The position involves developing backend features, integrating with frontend components, and deploying services on Kubernetes in a microservices architecture. The role supports trading systems used for initial valuation of financial products. 🗂️ Requirements: Excellent knowledge of Python with type hinting, Experience working with large codebases, Proficiency with Git version control, Knowledge of Docker, Knowledge of Kubernetes, Knowledge of Ansible, Experience with unit testing, Knowledge of JavaScript, Knowledge of React, Experience leveraging AI agents for software development 📃 Skills: Python, TypeHinting, Git, Docker, Kubernetes, Ansible, JavaScript, React, Testing, AI, Microservices 🏢 Description: Montrose Software supports one of the largest North American banks in enhancing and maintaining its financial libraries and applications. The bank serves over 17 million clients worldwide, employs more than 86,000 people, and offers a broad range of services including personal and commercial banking, wealth management, insurance, investor services, and capital markets products. Within this engagement, we are part of the structured rates products team, responsible for developing analytics services that support the pricing and initial valuation of financial instruments used across the bank’s systems and web-based applications. The solution is built using a microservices architecture, with communication handled via the Solace messaging system (pub/sub architecture). All microservices are deployed on the bank’s own Kubernetes cluster and are used by traders for the initial valuation of financial products before they are traded. Industry : Finance Location : Kraków / Hybrid/ Remote from Poland Your daily work will include: Develop and maintain backend functionality and integrate it with the frontend. Implement new features, optimize existing functionality, and fix bugs. Work together with other developers to deliver high-quality results Team & Collaboration > 20 people, and 7 from Montrose Regular meetings: Daily at 15:30 CET and weekly retrospective Communication : Chat, emails, ad hoc call Working hours: usually 9:00–17:00 CET Qualifications: Excellent knowledge of Python programming language with type hinting Large codebases, with hands on experience Ability to use Git version control system Docker / Kubernetes / ansible knowledge Unit testing skills Knowledge of Javascript / React Experience leveraging AI agents for software development Fluent in spoken and written English Nice to have: Familiarity with C++ Experience in a quantitative finance environment Experience in Linux/Windows management Please note that the interview process is divided into four parts: Technical phone screening (~30 minutes) Technical interview (~2 hours) Non-technical call with HR team (~30 minutes) Call with client for which you will be working Perks, Snacks & Everything Nice :) Work Environment & Flexibility Top-quality equipment to support your work Flexible working hours Remote work option Exciting and challenging projects with international teams Learning & Development English lessons with a native speaker Dedicated training budget for personal and professional growth Health & Well-being Private medical insurance Multisport card Air-conditioned workspace Showers available at the office Food & Comfort Lunches from Kraków’s top restaurants delivered to the office or a refund of the budget allocated for it Fully stocked kitchen with drinks, fruit, and snacks Lifestyle & Fun No dress code — dress comfortably Chillout area with bean bags, therapy balls, PlayStation 4, Nintendo Switch 2 + games, stretching area, and pull-up bar Regular team events Additional Perks Indoor bicycle parking Wyrażam zgodę na przetwarzanie moich danych osobowych przez Montrose Software zgodnie z Polityką Prywatności . English Version: I consent to Montrose Software processing my personal data according to the Privacy Policy Zapoznałem sie z Polityka Ochrony Sygnalistów Montrose Software. English Version: I consent to the Montrose Software Whistleblower Protection Policy.

🏢 Summary: The offer is for a backend engineer role focused on building and optimizing distributed infrastructure services for large-scale pricing and risk calculations in the financial domain. The position involves developing and maintaining C++ and Python services, supporting high-throughput and low-latency analytics, and ensuring reliability in a complex distributed system. The role includes working with containerized environments on Linux and Kubernetes, using modern CI/CD and messaging solutions. 🗂️ Requirements: Good knowledge of C++, Experience working in Linux environment, Proficiency in Python, Experience with Git, Familiarity with RESTful applications, Familiarity with containerization technologies, Familiarity with Kubernetes 📃 Skills: C++, Python, Linux, Kubernetes, Docker, Git, REST, SQL, SQLServer, Solace, Jenkins, GitHub, Jira 🏢 Description: Project description: Our team develops and evolves infrastructure services that orchestrate large-scale analytic price and risk computations across a wide range of financial instruments. These calculations are distributed over thousands of computation engines, enabling both high-throughput End-of-Day batch processing and low-latency intraday streaming analytics. The core analytic engine is implemented in C++, while the surrounding orchestration services are written in Java (legacy) and Python. We’re transitioning our environment from Windows-based virtual machines to containerized deployments on Kubernetes and Linux. Communication between services is primarily handled via Solace messaging and REST APIs. A major focus of our work is ensuring reliability and performance in a complex distributed system- including extensive debugging, monitoring, and log analysis to identify and resolve issues across multiple services and environments. Industry : Finance Location : Kraków / Hybrid/ Remote from Poland Your daily work will include: Building and optimizing services for pricing and risk calculation Designing, developing, and maintaining backend services in C++ and Python Participating in code reviews, discussing technical improvements, and sharing best practices Collaborating with developers across Poland, UK and Canada Working with SQL Server, Linux, and Solace (Pub/Sub model) Using GitHub, Jira, and Jenkins for CI/CD and task management Team & Collaboration 3 (Montrose) + 3 on the client’s side, including developers (4) and QAs (2) Regular meetings: daily standups biweekly sprint planning biweekly retrospective biweekly developer catchup call 4 short biweekly backlog refinement sessions Communication via email and Webex chat Working hours: usually 9:30–17:30 CET Qualifications: Good knowledge of C++ Linux environment Python Git Familiar with RESTful applications Familiar with containerization and Kubernetes Nice to have: Fintech experience Strong software engineering or math background Microsoft SQL use AI agents for development( ( e.g. Microsoft Copilot) Please note that the interview process is divided into four parts: Technical phone screening (~30 minutes) Technical interview (~2 hours) Non-technical call with HR team (~30 minutes) Call with client for which you will be working Perks, Snacks & Everything Nice :) Work Environment & Flexibility Top-quality equipment to support your work Flexible working hours Remote work option Exciting and challenging projects with international teams Learning & Development English lessons with a native speaker Dedicated training budget for personal and professional growth Health & Well-being Private medical insurance Multisport card Air-conditioned workspace Showers available at the office Food & Comfort Lunches from Kraków’s top restaurants delivered to the office or a refund of the budget allocated for it Fully stocked kitchen with drinks, fruit, and snacks Lifestyle & Fun No dress code — dress comfortably Chillout area with bean bags, therapy balls, PlayStation 4, Nintendo Switch 2 + games, stretching area, and pull-up bar Regular team events Additional Perks Indoor bicycle parking Wyrażam zgodę na przetwarzanie moich danych osobowych przez Montrose Software zgodnie z Polityką Prywatności . English Version: I consent to Montrose Software processing my personal data according to the Privacy Policy Zapoznałem sie z Polityka Ochrony Sygnalistów Montrose Software. English Version: I consent to the Montrose Software Whistleblower Protection Policy.

🏢 Summary: Backend Developer role focused on building and maintaining analytics services for pricing and valuation of financial instruments within a microservices architecture. The position involves developing backend features, integrating with frontend components, and supporting event-driven systems used by traders in a banking environment. Work includes optimizing existing solutions and collaborating within a large, distributed team. 🗂️ Requirements: Excellent knowledge of Python, Experience with FastAPI framework, Knowledge of event-driven architecture, Understanding of programming design patterns, Experience working with large codebases, Proficiency with Git version control, Unit testing skills, Knowledge of JavaScript, Knowledge of React, Understanding of software architecture and design principles 📃 Skills: Python, FastAPI, JavaScript, React, Git, Microservices, Testing, Architecture, Design-patterns, Event-driven 🏢 Description: Montrose Software supports one of the largest North American banks in enhancing and maintaining its financial libraries and applications. The bank serves over 17 million clients worldwide, employs more than 86,000 people, and offers a broad range of services including personal and commercial banking, wealth management, insurance, investor services, and capital markets products. Within this engagement, we are part of the structured rates products team, responsible for developing analytics services that support the pricing and initial valuation of financial instruments used across the bank’s systems and web-based applications. The solution is built using a microservices architecture, with communication handled via the Solace messaging system (pub/sub architecture). All microservices are deployed on the bank’s own Kubernetes cluster and are used by traders for the initial valuation of financial products before they are traded. Industry : Finance Location : Kraków / Hybrid/ Remote from Poland Your daily work will include: Develop and maintain backend functionality and integrate it with the frontend. Implement new features, optimize existing functionality, and fix bugs. Work together with other developers to deliver high-quality results Team & Collaboration > 20 people, and 7 from Montrose Regular meetings: Daily at 15:30 CET and weekly retrospective Communication : Chat, emails, ad hoc call Working hours: usually 9:00–17:00 CET Qualifications: Excellent knowledge of Python Knowledge of event-driven architecture Python FastAPI framework Good understanding of programming design pattern Large codebases, with hands on experience Ability to use Git version control system Unit testing skills Knowledge of Javascript / React Knowledge of software architecture and design principles Fluent in spoken and written English Nice to have: Familiarity with C++ Experience in a quantitative finance environment Docker / Kubernetes / ansible knowledge Experience in Linux/Windows management Perks, Snacks & Everything Nice :) Work Environment & Flexibility Top-quality equipment to support your work Flexible working hours Remote work option Exciting and challenging projects with international teams Learning & Development English lessons with a native speaker Dedicated training budget for personal and professional growth Health & Well-being Private medical insurance Multisport card Air-conditioned workspace Showers available at the office Food & Comfort Lunches from Kraków’s top restaurants delivered to the office or a refund of the budget allocated for it Fully stocked kitchen with drinks, fruit, and snacks Lifestyle & Fun No dress code- dress comfortably Chillout area with bean bags, therapy balls, PlayStation 4, Nintendo Switch 2 + games, stretching area, and pull-up bar Regular team events Additional Perks Indoor bicycle parkingm

🏢 Summary: Contract role focused on building a next-generation payment platform using a modern, future-proof tech stack within a cross-functional team. The position centers on designing and operating data-intensive systems, developing .NET-based backend services, and ensuring reliable, scalable deployments in containerized environments. Strong emphasis is placed on database performance, distributed systems, and CI/CD automation in regulated environments. 🗂️ Requirements: Proven experience designing and operating data-intensive systems in MS SQL Server environments, Strong expertise in database performance tuning, indexing, and query optimization, Experience building backend services with .NET and C#, Solid understanding of microservices architectures and distributed systems, Experience with asynchronous messaging and event-driven systems, Hands-on experience with containerized and orchestrated environments, Experience managing or contributing to CI/CD pipelines for database and application deployments, Fluency in English 📃 Skills: MS SQL Server, .NET, C#, Microservices, DistributedSystems, Kafka, IBMMQ, Docker, Kubernetes, OpenShift, CI/CD, SQL 🏢 Description: Description Build the next-generation payment platform on a modern and future-proof tech stack. Working in a cross-functional team What we’re looking for · Proven ability to design, optimize, and operate data-intensive systems, including schema design, performance tuning, and production troubleshooting in MS SQL Server–based environments. · Deep understanding of database performance and reliability, including indexing strategies, query optimisation, and handling production issues. · Experience building and operating backend services using .NET/C#, with a solid understanding of microservice architectures and distributed systems. · Experience designing and working with asynchronous messaging and event-driven systems, using Kafka, IBM MQ, or similar technologies. · Experience running services in containerised and orchestrated environments (Docker, Kubernetes/OpenShift), with awareness of scaling, resilience, and failure modes. · Experience contributing to or owning CI/CD pipelines for database changes and deployment automation, with a focus on safe, repeatable releases. · A collaborative engineering mindset, with a willingness to share knowledge, learn continuously, and improve how the team builds and runs software. · Meritorious with experience from financial services, payments, or other regulated environments. · Strong communication skills, with fluency in English; Swedish is a plus Start date: 2026-06-26 End date: 2027-06-25 Location : Stockholm

🏢 Summary: Hybrid B2B role in the banking sector focused on designing and maintaining data models for credit and financial data processes. The position involves translating business requirements into scalable technical solutions, ensuring data quality, and supporting integrations, automation, and end-to-end solution design. Candidates will collaborate with stakeholders and technical teams while working with SQL, Python, and data integration technologies. 🗂️ Requirements: Extensive experience in data modeling and solution design, Strong SQL skills, Hands-on experience with relational databases, Good programming skills in Python, Experience with data integration and transformation, Experience with data mapping across multiple systems, Understanding of APIs and system integrations, Understanding of process modeling, Experience ensuring data quality and governance standards, Strong analytical and problem-solving skills, Experience translating business requirements into technical solutions, Experience working with business stakeholders, Fluent English 📃 Skills: SQL, Python, APIs, Kafka, PowerBI, Java 🏢 Description: Industry: banking Location: hybrid - 3 days per week from office in Warsaw or Gdańsk Rate: 165 pln/h on b2b Summary: The primary objective of this role is to design and maintain data models that support credit and financial data processes. This position focuses on translating business requirements into scalable technical solutions, ensuring data quality, and facilitating collaboration between technical and non-technical teams. Main Responsibilities: Design and maintain data models supporting credit and financial data processes. Analyse business requirements and translate them into scalable technical solutions. Define and manage data mappings between multiple systems to ensure accurate data integration and transformation. Ensure data quality, consistency, traceability, and auditability across the solution landscape. Collaborate with business stakeholders, architects, and development teams on end-to-end solution design. Prepare and maintain technical documentation and functional specifications. Support process optimization and automation using AI-assisted tools. Participate in solution implementation, testing, and continuous improvement activities. Key Requirements: Extensive experience in data modeling and solution design. Strong SQL skills and hands-on experience with relational databases. Good programming skills in Python. Experience with data integration, transformation, and data mapping across multiple systems. Understanding of APIs, system integrations, and process modeling. Experience ensuring data quality, consistency, and governance standards. Strong analytical and problem-solving skills. Experience working directly with business stakeholders and translating business requirements into technical solutions. Fluent English, both written and spoken. Nice to Have: Knowledge of Kafka. Experience with Power BI. Familiarity with Java development. Understanding of data warehouse concepts and architecture. Experience using AI tools for documentation, testing, data analysis or development support. Experience in banking, finance, or regulatory reporting environments. Knowledge of credit risk, rating, or financial statement data domains.

🏢 Summary: Full-time remote B2B contract for a Senior Software Consultant to take technical ownership of a Python-based manufacturing analytics solution in a regulated pharmaceutical environment. The role focuses on evolving and scaling the application, improving architecture, ensuring compliance, and supporting cloud-based deployment. It requires strong autonomy, database expertise, and experience delivering controlled, traceable changes in regulated settings. 🗂️ Requirements: Strong experience in Python application development, Experience developing and supporting production software solutions, Solid knowledge of relational databases, Ability to design and evolve database schemas and SQL data flows, Experience with PostgreSQL or similar database, Proven ownership of a production system, Ability to quickly understand and take over existing codebase, Experience with automated testing, Experience with documentation and change control processes, Experience working in regulated environments, Experience with cloud-based solutions or modern deployments, Ability to work independently as a senior technical resource, Fluent English 📃 Skills: Python, SQL, PostgreSQL, AWS, Terraform, CDK, Streamlit, Dash, Cloud, Docker, Serverless, MES 🏢 Description: 🌍Work mode - fully remote. 📑 Assignment type : B2B ⏳Contract length > 6 months + extensions. ⏰Start - ASAP/1 month. 📕Language - English. ⚙️Industry - healthcare/pharmaceutical. 💼 Recruitment process - 2 interviews with the client. 💻 Workload : Full time (40 hours a week). Summary: We are seeking a Senior Software Consultant to take technical ownership of an existing manufacturing analytics solution within the pharmaceutical production environment. This role involves evolving the solution through new use cases, scaling, architectural improvements, and ensuring compliance with regulatory standards. Main Responsibilities: Take technical ownership of an existing Python-based application and drive its evolution through new use cases, scaling, architectural improvements, and maintainability enhancements. Design and implement new features based on business, manufacturing, process-support, and quality needs. Work with relational databases, including schema design, SQL, migrations, performance considerations, data quality, and auditability. Support and improve the application's cloud-based deployment and operational setup. Contribute to architectural improvements that enable the solution to scale from a local use case toward a broader platform. Ensure that changes are tested, documented, and implemented in a controlled and traceable manner. Collaborate with process supporters, subject-matter experts, QA, IT, and other stakeholders. Translate business, process, and compliance needs into pragmatic technical solutions. Support handover, knowledge transfer, and long-term maintainability of the solution. Where relevant, contribute to follow-up activities related to Data Integrity and IT Risk Assessment. Key Requirements: Strong experience with Python application development . Experience developing, maintaining, and supporting production software solutions. Solid understanding of relational databases, preferably PostgreSQL or similar . Ability to design, understand, and evolve database schemas and SQL-based data flows. Track record of solo or near-solo ownership of a production system. Ability to understand an existing codebase and take ownership of it quickly. Treats automated testing as a key part of delivery. Experience working with documentation, change control, structured delivery processes, and maintainable handover material. Comfortable working in environments where traceability and controlled changes are critical. Experience with cloud-based solutions or modern deployment environments. Strong communication skills and ability to collaborate with both technical and non-technical stakeholders. Proven ability to work independently as a senior technical resource. Nice to Have: Experience in pharmaceutical, biotech, medical device, or another regulated environment. Familiarity with GxP, computerized systems validation, data integrity, and controlled software changes. Experience with Streamlit, Dash, or similar Python-based application frameworks. Experience with AWS or another major cloud platform. Familiarity with Infrastructure-as-Code tools such as AWS CDK, Terraform, or similar. Experience with containerized applications, serverless jobs, managed databases, or similar cloud components. Experience with manufacturing systems, MES systems, or industrial analytics. Familiarity with Statistical Process Control or similar process-monitoring methods. Experience scaling solutions into a more reusable platform. Experience supporting validation, risk assessment, or quality documentation in regulated environments. Other Details: Tools/Methodologies: Python, SQL, Cloud Technologies Compliance: Experience in a regulated environment required

🏢 Summary: Senior Software Engineer role focused on designing and delivering high-quality .NET C# solutions within a microservices and event-driven architecture. The position involves hands-on development, technical leadership, code reviews, incident response, and driving architectural decisions in an Agile environment. The engineer will work with modern technologies to build scalable systems and mentor other team members. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field, 5+ years of experience as a Software Engineer with .NET C#, Strong experience with microservice architectures, Experience with event-driven architectures and messaging systems, Hands-on experience with PostgreSQL and other databases, Experience working with CI/CD pipelines, Ability to solve complex technical problems independently, Experience working in Agile environments, Technical leadership and mentoring experience, Fluency in English 📃 Skills: .NET, C#, Kafka, PostgreSQL, Elasticsearch, Redis, Angular, Pulsar, RabbitMQ, CI/CD, Microservices, Agile 🏢 Description: Main tasks and responsibilities Being comfortable with experimentation and willing to approach a problem in multiple ways via rapid prototyping. Writing clean, maintainable code using .NET C#, along with other modern tools such as Kafka, PostgreSQL, and Elasticsearch. Regularly delivering high-quality, working software as part of the team. Building a deep, expert understanding of the team’s codebase. Providing highly insightful, comprehensive code reviews with an eye towards bigger-picture concepts. Ensuring documentation exists for all critical systems and writing technical guides used widely by other Engineers. Monitoring dashboards/alerts, and responding to incidents with the appropriate level of urgency. Driving technical decision making, expertly identifying trade-offs and risks, and considering organization-wide technical alignment. Effectively diagnosing the root cause of complex bugs and providing a fix along with automated regression tests. Leading specifications and refinement of technical improvements. Mentoring, coaching, and empowering other engineers by sharing knowledge through demos and presentations. Key requirements Education Level: Bachelor’s (or equivalent) degree in Computer Science or a related field. Experience: At least 5+ years of experience as a Software Engineer, working with .NET C#. Required Technical Skills: Understanding of how to apply microservice architectures successfully, with knowledge of multiple patterns and techniques, and the tradeoffs of each. Experience with Front-End technologies like Angular is a plus. Experience with event-driven architectures and event streaming/messaging tools like Kafka (preferred), Pulsar, RabbitMQ, etc. Experience using databases - PostgreSQL, Redis, Elasticsearch, etc., understanding which database is best deployed, depending on the use case. Accustomed to working in environments with CI/CD pipelines used for deploying applications. Proven ability to identify opportunities for best practice improvements within the team and share knowledge in order to address them. Ability to tackle highly complex technical problems independently. Track record of quickly learning about complex architectures and codebases. Experience in working in an Agile environment. Technical leadership experience, including mentoring other Engineers. Other Required Skills: Fluency in English; Portuguese is a plus. Excellent communication skills, able to communicate clearly and effectively, adjusting style depending on the audience.

🏢 Summary: B2B contract for a Senior Java Developer to design, implement, and modernize a large-scale Terminal Management System handling 300k+ payment terminals. The role focuses on developing and migrating distributed systems components using Spring Boot and WildFly, integrating multiple internal and external services, and improving security through vulnerability scanning and upgrades. 🗂️ Requirements: Very good knowledge of Java 8+, Strong object-oriented programming skills, Experience in designing, implementing, documenting and testing application components, Very good practical knowledge of Spring and Spring Boot, Very good practical knowledge of Hibernate/JPA and JEE, Experience with message queue systems, especially RabbitMQ, Knowledge of Maven, Git, GitLab, GitLab CI/CD, Jenkins, Nexus, Jira, Knowledge of relational databases, particularly Oracle, Practical knowledge of RESTful API design, Experience in system integration, Experience with distributed systems, Experience with JBoss/WildFly application servers, Knowledge of security scanning tools (e.g., Fortify, Sonatype), Availability to work 4 days per week from Warsaw office, Full availability in Polish time zone 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, JEE, RabbitMQ, Maven, Git, GitLab, Jenkins, Nexus, Jira, Oracle, REST, JBoss, WildFly, Fortify, Sonatype, Hazelcast, GWT, GWTExt, SOAP, RMI 🏢 Description: The client is an American multinational company in the fintech industry Key details: Location: 4 days/week from the Warsaw office Rate: 130–180 PLN/hour net + VAT Job type: B2B contract Duration: 12 months + extensions Recruitment process: 2 stages English and Polish: B2/B2+ Luxmed, MultiSport, equipment provided by the client Job Responsibilities Design and implementation of IT solutions based on the presented analytical and technical documentation; Reviewing analytical documentation; Creating technical documentation; Technical upgrade for existing system; Working with legacy code Conducting regular scans in the application and removing vulnerabilities Job Requirements Fully available in the Polish time zone; Ability to work from the office in Warsaw (weekly: 4 days at office + 1 day WFH ); Very good knowledge of Java 8+ and object-oriented programming issues; Experience in independent design, implementation, documentation and testing of application components; Very good and p ractical knowledge of Spring, Spring Boot, Hibernate/JPA and JEE frameworks; Practical knowledge with message queue systems, particularly RabbitMQ; Practical knowledge of tools supporting the software development process: Maven, Git, Gitlab, Gitlab CI/CD, Jenkins, Nexus, Jira; Knowledge of relational databases, in particular Oracle; Practical knowledge of RESTful API design; Experience in system integration; Experience with distributed systems; Experience with application servers, JBoss/WildFly; Knowledge of scannnfg tools (Fortify, Sonatype..) Description of the area of involvement TMS (Terminal Management System) is used to manage a very large number of payment terminals (300k+), it gives users a uniform way to manage different terminals from different hardware vendors. TMS has a complex architecture, consisting of two components TMS (1 WildFly instance) providing GUI and implementing some business functions and RTMS (3 Spring-boot instances) implementing most of the business functionalities. A gradual migration from TMS to RTMS is being carried out. The system intensively uses Spring, Hibernate and RabbitMQ. The system has distributed transactions (different two-phase-commit, saga approaches) and distributed cache (Hazelcast). TMS is integrated with many internal and external systems (via REST, SOAP, RMI, direct database connections and database links). The GUI is written in GWT and GWTExt. Hays Poland sp. z o.o. is an employment agency registered in a registry kept by Marshal of the Mazowieckie Voivodeship under the number 361

🏢 Summary: Development of scalable, cloud-native applications using C#/.NET in a microservices architecture on Microsoft Azure. The role focuses on building high-performance, containerized systems, ensuring quality through CI/CD practices, and optimizing performance in modern cloud environments. Position requires strong engineering expertise and experience in travel-related solutions. 🗂️ Requirements: 5+ years experience with C# and .NET, 3+ years experience developing travel-related solutions, Experience with modern cloud architectures, Expertise in Microsoft Azure, Experience with containerized applications, Experience with SQL and NoSQL databases, Strong knowledge of microservices architecture, Understanding of API design principles, Knowledge of clean architecture and SOLID principles, Experience with CI/CD practices 📃 Skills: C#, .NET, Azure, SQL, NoSQL, Microservices, Containers, APIs, CI/CD, SOLID 🏢 Description: Our Client is a rapidly growing European technology company developing advanced digital solutions used by thousands of customers worldwide. The organization focuses on building scalable platforms and innovative products that support operational efficiency and business growth. Their engineering teams work in modern cloud environments and emphasize quality, user experience, and continuous delivery. The company operates internationally and continuously invests in product development and technology excellence. 📍 Location: Warsaw - once per week in the office 🚀 Your responsibilities Develop clean, scalable code using C# / .NET in microservices architecture and cloud-native environments Test and deploy systems and applications on Microsoft Azure Monitor and optimize system performance , identifying and resolving issues proactively Act as a technical expert for the system and support other internal teams Work in an Agile squad , with strong focus on user experience, quality assurance, and CI/CD practices Contribute to the engineering culture by sharing knowledge and applying best practices Work on projects that directly impact the company’s growth and product development 🎯 Our requirements 5+ years of professional experience in software development using C# / .NET and modern cloud architectures 3+ years of experience developing travel-related solutions Strong understanding of core software engineering principles and API design Proven expertise in building and managing high-performance containerized applications on Microsoft Azure Experience designing and managing SQL and NoSQL databases Deep understanding of microservices architecture, clean code, clean architecture, and SOLID principles Professional English proficiency ⭐ Nice to have Working knowledge of Angular / AngularJS Familiarity with AI tools supporting development workflows Experience working in Agile / Scrum environments Thank you for all applications. We will contact selected candidates. TQLO Sp. z o.o. – Employment Agency (KRAZ 33580)

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