Senior Python Developer

🏢 Summary: Software Engineer role focused on building and enhancing front office systems for commodities trade risk assessment, including market and trade data processing components. The position involves developing high-performance data pipelines, time series frameworks, and integrations used daily by traders in a fast-paced financial environment. The role emphasizes new development in Python and close collaboration with a highly technical team. 🗂️ Requirements: 2/3+ years of software engineering experience, Proficiency in Python, Strong knowledge of data structures and algorithms, Experience with SQL databases, Experience with NoSQL databases, Experience building ETL data pipelines, Experience with market data or trade data processing systems, Degree in Computer Science, Mathematics, Physics or related field 📃 Skills: Python, SQL, NoSQL, ETL, Kafka, Redis, AWS, Azure 🏢 Description: The StratsLab Difference: Why you should read this We were founded in 2015 by alumni of the Warsaw University MIM Faculty, who spent years sharpening their skills at top-tier investment banks and hedge funds in London. We brought that exclusive, high-impact culture back to Warsaw. Developer-Driven : You will be surrounded by top-notch Developers who genuinely love to code. We prioritize writing new code over maintaining legacy systems. Unique Domain : You'll gain unique skills working directly in the highly specialized area of commodities trade risk assessment. This isn't generic IT - it's highly challenging and intellectually rewarding. Real Impact : You will have independent, responsible tasks and will have a chance to implement your ideas, seeing the immediate effects of your work on complex financial systems. Our Roots & Your Fast Track: We are proud of our origins. Since many of us are alumni of UW (JSIM, CS, Math, Physics) ,  Matex at Staszic and finalists of the Informatics or Mathematics Olympiad , we know what it takes to get there. If you share this background, just apply and we guarantee you an intro call. We speak the same language, so let’s skip the formalities. While we value our roots, we value exceptional engineering even more. If you are a high-calibre developer from a different path, your skills are the only credential that matters. Apply and let your code do the talking. Your Role: In this role, you will be responsible for designing, developing and testing essential front office components. You will work on market data ingestion, time series frameworks, trade ingestion and high frequency trades. Your work also involves building ETL data pipelines and integrations with third-party systems. You will add features to the framework for easy developing and deploying of applications while providing ongoing support and enhancement of the platform. What makes you the right fit? You should enjoy building the tools and interfaces that traders use daily. You should enjoy seeing users use your work in a different way than you anticipated and adjust accordingly. You should enjoy working in Python. You have 2/3+ years of software engineering experience (we're looking for candidates of different seniority to join our team). You have a strong grasp of data structures, algorithms and exposure to SQL and NoSQL database programming. You enjoy learning and trying new things. Familiarity with streaming technologies like Kafka and Redis is a plus. Familiarity with cloud computing such as AWS or Azure helps you stand out. Exposure to multiple programming languages and paradigms is an advantage. Computer Science, Maths, Physics or other relevant degree. Financial knowledge and/or experience in financial markets will be an advantage. The Offer: We believe that high-calibre work deserves exceptional support: Compensation: Base salary plus a bonus twice a year. Your role and salary are based on your skills and how fast you learn, not just your old job title. Professional Growth: You will work closely with experts and gain exposure to top financial institutions as a natural part of your day. Being in this team means you share knowledge with exceptional programmers and grow your expertise through your daily interactions. Office: Powiśle, Warsaw. Flexible working hours. International business trips for volunteers. Collaborative Work Model We thrive on interpersonal relations and the ability to solve the most complex problems together, that’s why we’re looking for individuals who want to come to the office most days to solve problems together with the team by a whiteboard. The Next Step: Our Selection Process If all goes well, we are going to spend a lot of time together. Our process aims to ensure both you and us know what we are getting into: Informal Introduction: You will start with a casual chat with our Founders to see if we are a good fit for each other. Technical Assessment: You will do a technical task so we can see how you code and solve problems. Team Engagement: You will meet the team and talk about the role directly with the people you would be working with.

🏢 Summary: Fullstack Engineer role focused on building and scaling a data and analytics platform for investment decision-making, leveraging machine learning and strategic data. The position involves end-to-end development of production-grade applications, API integration, and ensuring platform scalability and performance in a hybrid work model. 🗂️ Requirements: 4+ years of experience with TypeScript and Node.js in production environments, Strong knowledge of HTML and CSS, Experience with SQL and PostgreSQL databases, Ability to design and integrate REST and GraphQL APIs, Experience with automated testing, pair programming, and peer review practices 📃 Skills: TypeScript, Node.js, HTML, CSS, SQL, PostgreSQL, GraphQL, REST, GCP, DevOps 🏢 Description: About the Project: Our client is a Swedish fintech company expanding in Poland. This project focuses on developing a data and analytics platform designed to revolutionize investment decision-making by leveraging machine learning and strategic data. As a Fullstack Engineer, you will design, develop, and maintain scalable solutions, collaborating with cross-functional teams to ensure the delivery of high-quality features. Work Mode : Hybrid – 2/3 days in the Warsaw office Job Responsibilities: Collaborate with cross-functional teams to ensure the delivery of high-quality features. Contribute to all stages of the development lifecycle. Design, develop, and maintain scalable solutions that support investment operations. Leverage machine learning and strategic data to deliver exceptional insights. Work closely with passionate professionals who believe in collaboration, innovation, and making a meaningful impact. Ensure the platform's scalability and performance through continuous improvement and optimization. Expectations: Must have: 4+ years of experience developing production-grade applications using TypeScript and Node.js Strong understanding of HTML, CSS, and design principles Knowledge of database management with SQL and PostgreSQL Experience with software craftsmanship practices, including automated testing, pair programming, and peer review Ability to write and integrate APIs in various formats such as GraphQL and Rest Nice to have: Experience with Google Cloud Platform (GCP) and DevOps practices. Familiarity with cloud-native development and scalable system architectures. We offer: Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development. Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors. Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics. Spectacular events, both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), Professional growth Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.

🏢 Summary: Senior Frontend Developer role focused on building and optimizing high-performance, scalable user interfaces for high-frequency trading platforms in a hybrid Warszawa-based model. The position involves developing React-based solutions, enhancing trading infrastructure, and ensuring low-latency performance in financial systems. You will contribute to modern frontend workflows and collaborate on delivering robust, scalable digital trading solutions. 🗂️ Requirements: Minimum 4 years commercial frontend development experience, Strong proficiency in React JS, Strong proficiency in JavaScript, Strong proficiency in modern CSS, Experience with Jest testing framework, Experience with CI/CD processes, Working knowledge of GitLab, Understanding of design patterns, Understanding of programming best practices, Fluent English, Legal right to work in the European Union 📃 Skills: React, JavaScript, CSS, SCSS, Jest, GitLab, CI/CD, npm, Java, Python, Ag-Grid 🏢 Description: Empower scalable UI innovation — shape the future of high-frequency trading platforms! Location & Work Model Warszawa-based opportunity with hybrid work model. As a Senior Frontend Developer, you will be working for our client, a leader in systematic trading strategies within the financial industry. You will contribute to building and optimizing critical trading infrastructure across derivatives, FX, commodities, rates, and single stocks, helping to drive performance and scalability in digital trading solutions. Join us and be at the forefront of innovation and growth in financial technology. Your main responsibilities: Develop and optimize high-performance, scalable user interfaces using React JS (Hooks / Context API). Implement modern CSS techniques (CSS-in-JS / SCSS) to enhance user experiences. Collaborate with cross-functional teams to deliver seamless frontend solutions. Write robust unit tests with Jest and contribute to code quality standards. Contribute to modern frontend workflows, including npm, CI/CD pipelines (GitLab). Support backend integration using Java or Python (exposure welcome). Participate actively in UI design discussions to align with UX principles. Maintain and improve existing systems, ensuring low latency and high-volume trading efficiency. You're ideal for this role if you have: Minimum 4 years of commercial frontend development experience. Strong proficiency in React JS, JavaScript, and modern CSS. Sound understanding of design patterns and best programming practices. Experience with Jest testing framework. Working knowledge of CI/CD processes and tools (GitLab). Basic backend knowledge in Java or Python is a plus. It is a strong plus if you have: (optional) Experience with Ag-Grid library. Knowledge of good UX principles. Certifications or additional training in frontend technologies. Language Required for the role: Fluent English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Frontend Developer role focused on building and optimizing high-performance, scalable user interfaces for high-frequency trading platforms in a hybrid model in Warsaw. The position involves developing React-based solutions, enhancing UI performance, and supporting integration with backend systems in a low-latency trading environment. 🗂️ Requirements: Minimum 4 years commercial frontend development experience, Strong proficiency in React JS, Strong proficiency in JavaScript, Strong proficiency in modern CSS, Experience with Jest testing framework, Experience with CI/CD tools (GitLab), Understanding of design patterns and best programming practices, Fluent English, Legal right to work in the EU 📃 Skills: React, JavaScript, CSS, SCSS, Jest, GitLab, CI/CD, npm, Java, Python, Ag-Grid 🏢 Description: Empower scalable UI innovation — shape the future of high-frequency trading platforms! Location & Work Model Warszawa-based opportunity with hybrid work model. As a Senior Frontend Developer, you will be working for our client, a leader in systematic trading strategies within the financial industry. You will contribute to building and optimizing critical trading infrastructure across derivatives, FX, commodities, rates, and single stocks, helping to drive performance and scalability in digital trading solutions. Join us and be at the forefront of innovation and growth in financial technology. Your main responsibilities: Develop and optimize high-performance, scalable user interfaces using React JS (Hooks / Context API). Implement modern CSS techniques (CSS-in-JS / SCSS) to enhance user experiences. Collaborate with cross-functional teams to deliver seamless frontend solutions. Write robust unit tests with Jest and contribute to code quality standards. Contribute to modern frontend workflows, including npm, CI/CD pipelines (GitLab). Support backend integration using Java or Python (exposure welcome). Participate actively in UI design discussions to align with UX principles. Maintain and improve existing systems, ensuring low latency and high-volume trading efficiency. You're ideal for this role if you have: Minimum 4 years of commercial frontend development experience. Strong proficiency in React JS, JavaScript, and modern CSS. Sound understanding of design patterns and best programming practices. Experience with Jest testing framework. Working knowledge of CI/CD processes and tools (GitLab). Basic backend knowledge in Java or Python is a plus. It is a strong plus if you have: (optional) Experience with Ag-Grid library. Knowledge of good UX principles. Certifications or additional training in frontend technologies. Language Required for the role: Fluent English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Backend Engineer role focused on building and enhancing low-latency FX trading systems for a top North American bank, fully remote from Poland. The position involves developing high-performance backend services for algorithmic order management and order routing in real-time, high-throughput environments. This is a long-term opportunity to work on actively developed, large-scale trading platforms in close collaboration with traders and international teams. 🗂️ Requirements: Current professional Java programming experience, Strong understanding of algorithms, complexity and multi-threading, Deep knowledge of Java language and standard libraries, Strong knowledge of data structures and Java Collections Framework, Experience building backend services for front-office trading systems, Understanding of front-office workflows and electronic trading platforms, Experience with algorithmic order management or order routing systems, Expertise in multi-threading, event-driven systems and performance tuning, Knowledge of low-latency trading systems (microsecond level), English proficiency, Residence and legal right to work in Poland, Ability to overlap 6 hours with US Eastern Time 📃 Skills: Java, Algorithms, Multithreading, DataStructures, Collections, Concurrency, LowLatency, OrderRouting, OrderManagement, ElectronicTrading, EventDriven, PerformanceTuning, FX, Backend 🏢 Description: Join the Fixed Income Trading Systems Team to build and enhance FX trading workflows within a large-scale, low-latency trading environment. Quick Facts - Senior Java Backend Engineer - Building FX trading systems, including high-performance backend services for algorithmic order management and order routing - 270 zł – 300 zł / hr B2B net + VAT - Fully remote (residents of Poland only) Description This role focuses on developing ultra-low-latency, high-throughput FX trading systems where milliseconds matter. You will work on greenfield and semi-greenfield projects, engineering real-time market data processing and automation at scale. The position involves close collaboration with traders and product teams, contributing to actively developed systems without legacy constraints. You will design and implement robust backend services in core Java, working on algorithmic order management and order routing solutions. The system is functional and continuously evolving, and you will collaborate directly with international teams across North America and Europe. Responsibilities - Design and implement robust software solutions for FX trading systems using core Java - Build high-performance backend services that algorithmically manage and route orders - Create thorough test cases to ensure software stability and reliability - Collaborate with operations teams to build new features and improve existing functionality Requirements - Current Java programming experience with strong understanding of algorithms, complexity, and multi-threading - Deep knowledge of Java language capabilities and standard libraries - Strong knowledge of data structures and the Java Collections Framework - Experience building backend services for front-office trading systems - Understanding of front-office workflows and electronic trading platforms - Experience contributing to algorithmic order management or order routing systems - Expertise in multi-threading, event-driven systems, and performance tuning - Knowledge required for building low-latency (microseconds) trading systems - Strong communication skills and ability to work in trader-facing environments - English proficiency - Residence and legal right to work in Poland - Ability to overlap 6 hours with US Eastern business hours Nice to Have - Experience with trading protocols or FX trading systems - Exposure to time-series databases and market data integration - Familiarity with algorithmic workflows and pricing engines - Computer science degree What We Offer - Work on high-performance trading systems in the financial domain - Collaboration with experienced international development teams - Direct collaboration with client teams in North America and Poland - Long-term engagement in an actively developed system - Fully remote work based in Poland with increasing flexibility - Competitive compensation and time-off options Recruitment Process - Submit your CV - Complete written questions and a short programming exercise - Participate in a three-stage online interview process including technical discussions and live coding - Background check for successful candidates

🏢 Summary: The offer is for a Network Automation / DevOps Engineer responsible for transforming a global, high-availability financial network into a highly automated, observable, and self-service platform. The role focuses on building advanced telemetry, monitoring, and infrastructure automation solutions in a low-latency capital markets environment. It combines deep networking expertise with Infrastructure as Code and cloud integration. 🗂️ Requirements: Experience with modern monitoring and telemetry stacks, Hands-on experience with network automation tools, Proficiency in Python programming, Experience with Infrastructure as Code, Knowledge of NETCONF or RESTCONF, Strong understanding of BGP, OSPF, PIM, IGMP, Experience with AWS networking, Ability to perform deep packet analysis, Experience managing multi-vendor network environments, Willingness to participate in 24/7 on-call rotation 📃 Skills: Python, Git, Ansible, Jinja, Terraform, Netbox, Temporal, Prometheus, Grafana, Telegraf, gNMI, YANG, NETCONF, RESTCONF, BGP, OSPF, PIM, IGMP, AWS, Cisco 🏢 Description: Location: Warsaw, Poland (City Centre, near Rondo ONZ) — Hybrid model (3 days a week in the office, 2 days remote) Contract Type: Permanent (Umowa o Pracę) About the Role & Project: We are recruiting for our client – a rapidly growing, global financial institution operating in the capital markets. We are looking for an engineer eager to bridge the gap between traditional network engineering and modern DevOps practices. This is not a role for a traditional network administrator. We are seeking a specialist whose default approach to repetitive tasks is automation, and who is passionate about building advanced telemetry and monitoring systems. Your mission will be to transform a global, high-availability infrastructure into a self-service, highly observable platform. If you thrive in environments where system stability and milliseconds directly impact business outcomes, and where manual intervention is treated as a problem to be solved with code, this is the team for you. Key Responsibilities: Design, implement, and maintain advanced telemetry, monitoring, and predictive alerting systems for a global, high-availability network. Develop, scale, and maintain automation tools to streamline network workflows (from automated provisioning to zero-touch deployments). Collaborate closely with engineering and investment teams to align network performance with dynamic business and trading requirements. Define, implement, and maintain configuration standards across a robust multi-vendor environment. Serve as the senior escalation point for troubleshooting and resolving complex performance and routing anomalies. Participate in a 24/7 on-call rotation and scheduled out-of-hours maintenance windows. Technical Profile (Technical Fit): Observability-First Mindset: Practical experience with modern monitoring stacks, telemetry protocols, and metrics collection (Prometheus, Grafana, Telegraf, gNMI, YANG, Cisco Telemetry). Automation as a Standard: Strong hands-on experience with automation tools and frameworks such as Ansible, Jinja, Terraform, Netbox, and workflow engines (e.g., Temporal). Infrastructure as Code (IaC) & Dev Skills: Proficiency in Python and Git, with experience managing network configurations programmatically (NETCONF/RESTCONF). Core Networking Foundations: Solid understanding of routing protocols and multicast environments (BGP, OSPF, PIM, IGMP). Public Cloud Integration: Practical knowledge of building and managing cloud network infrastructure (AWS). Advanced Troubleshooting: Ability to perform deep-packet analysis and diagnose complex, transient network issues under pressure. Personal Attributes (Cultural Fit): A continuous learning mindset with a drive to proactively identify and optimize inefficient processes. Ability to work independently, taking ownership of projects and delivering them on schedule with minimal supervision. Excellent communication and collaboration skills, comfortable working in a fast-paced, international team. Strong analytical thinking and decision-making skills under pressure. Bonus Points: Experience integrating enterprise-grade VoIP and cloud collaboration systems. Familiarity with network security, identity management, and segmentation solutions (e.g., Cisco ISE). A basic understanding of financial markets, trading lifecycles, or quantitative trading environments. What We Offer: Stable Employment: Full-time employment contract (Umowa o Pracę - UoP). Tax Optimization: Eligibility for creative tax-deductible costs (KUP - Koszty Uzyskania Przychodu). Financial Reward: Highly competitive base salary accompanied by a generous annual performance bonus. Comprehensive Health: Premium private medical care package that fully includes dental coverage (stomatologia). Wellness & Lifestyle: MultiSport card to keep you active and healthy. Daily Perks: Pre-funded lunch card for your daily meals.

🏢 Summary: B2B contract for a Ruby on Rails Developer to build and maintain a client platform, implement new features, and ensure performance and reliability in a remote or hybrid setup. The role involves backend development with Rails, testing, database management, and occasional frontend support with React. You will collaborate in an Agile team to deliver high-quality, production-ready solutions. 🗂️ Requirements: 3+ years experience with Ruby on Rails, Knowledge of Active Record, Knowledge of RSpec, Experience with production applications, Familiarity with relational databases, Experience writing unit and integration tests, Understanding of MVC architecture, Basic experience with React, Understanding of REST API principles, English B2 level minimum, Polish B2 level minimum, Familiarity with Agile methodologies 📃 Skills: Ruby, Rails, ActiveRecord, RSpec, PostgreSQL, React, REST, AWS, Heroku, Scrum, Kanban, MVC 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote or in our Warsaw office Your Tasks and Responsibilities: Implementing new features on our client’s platform. Solving programming challenges and continuously developing your skills. Participating in code reviews and collaborating with team members. Maintaining the existing codebase and fixing bugs. Writing unit and integration tests (E2E is a plus). Supporting frontend development using React when needed. Contributing to product improvements through experimentation and iteration. Taking care of application performance and reliability. Collaborating with Product Managers and team members to deliver high-quality solutions. Requirements: 3+ years of experience with Ruby on Rails. Good knowledge of Active Record and RSpec. Experience working with production applications (AWS or Heroku is a plus). Familiarity with relational databases (e.g., PostgreSQL). Experience writing tests and understanding of testing best practices. Understanding of the MVC pattern or similar architectures. Basic experience with React (components, API integration). Understanding of REST API principles. English and Polish at a minimum B2 level. Familiarity with Agile methodologies (Scrum, Kanban). Nice to have: Experience with distributed systems. Interest in using AI tools to improve development workflow. Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk . Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: Hybrid Delivery Manager role for a greenfield fintech platform in the banking domain, responsible for end-to-end delivery across multiple agile squads. The position focuses on coordinating large cross-functional teams, managing risks and dependencies, and ensuring timely delivery of a large-scale financial system. Offers real impact on processes and collaboration within an international environment. 🗂️ Requirements: Proven experience as Delivery Manager or Project Manager managing multiple agile teams, Experience delivering software projects with teams of 20+ members, Strong knowledge of agile methodologies, Experience in delivery planning, dependency management, and risk management, Ability to manage stakeholder reporting, Solid understanding of software development lifecycle, Fluent English (spoken and written), Availability to work hybrid, 3 days per week in office (Warsaw/Kraków/Rzeszów/Gdańsk) 📃 Skills: Agile, Scrum, SDLC, Java, Spring, Flutter, React 🏢 Description: Salary: 1300-1600 PLN/ MD (B2B) Work model: hybrid, 3 days per week in office (Warsaw/ Kraków/ Rzeszów/ Gdańsk) Why choose this offer? Opportunity to build a fintech platform from scratch (greenfield project) Real impact on architecture and core frontend services from day one Collaboration within a cross-functional, international team Work on a large-scale financial platform in the banking domain Project We are building a fintech platform from the ground up for a financial institution operating in the banking products space. Expected competences and knowledge: MUST HAVE Proven experience as a Delivery Manager, Project Manager, or similar role managing multiple agile teams simultaneously Experience managing delivery for software development projects with teams of 20+ people Strong understanding of agile methodologies and ability to adapt processes to team needs Experience with delivery planning, dependency management, risk management, and stakeholder reporting Ability to work effectively with technical teams; solid understanding of software development lifecycle, without necessarily being a developer Fluent English ; ability to communicate freely in a professional setting (spoken and written) Availability to work from the office 3 days per week in one of the following locations: Warsaw, Kraków, Tricity, or Rzeszów NICE TO HAVE Prior experience in the financial services or banking domain Experience with greenfield projects and team ramp-up / scaling Experience coordinating between technical and business stakeholders in a multi-squad setup Familiarity with Java/Spring or Flutter/React technology stacks Responsibilities you will have: Own end-to-end delivery across 3 cross-functional squads: planning, tracking, risk management, and reporting Coordinate squad-level work to manage cross-squad dependencies and ensure consistent progress toward project milestones Work with Tech Leads to resolve blockers, manage scope, and maintain realistic delivery timelines Collaborate with the Product Owner and Business Analysts to ensure requirements are clearly understood and properly prioritized Facilitate agile ceremonies and ensure effective team processes (sprint planning, retrospectives, demos) Manage the gradual team ramp-up: coordinate onboarding of new squad members as the team scales Provide regular delivery reports and status updates to project leadership (weekly cadence) Identify delivery risks early and implement mitigation plans Communicate effectively in English with all stakeholders, including technical teams and senior leadership Client – why choose this particular client from the Jit portfolio? The client is a fintech institution operating in the Kingdom of Saudi Arabia, focused on modernising its digital capabilities and expanding its offering for micro-SME customers . It is an organisation with a strong market presence and a clear strategic commitment to innovation, aiming to deliver banking experiences that are fully digital, user-friendly, and deeply integrated with day-to-day business needs. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy. Wymagania Oczekujemy Oferujemy

🏢 Summary: Hands-on Quantitative Software Engineer role focused on building and optimizing a high-performance research-to-trading platform for quantitative investment strategies. The position involves developing analytics, pricing libraries, and production trading systems using C++ and Python, with direct collaboration with researchers and investment professionals. Emphasis is placed on scalable data pipelines, performance tuning, and reliable production infrastructure. 🗂️ Requirements: Degree in Computer Science, Engineering, Mathematics, Physics, or related quantitative field, 3+ years of software engineering experience in production environments, Strong programming skills in Python, Strong programming skills in modern C++, Experience with SQL and relational databases, Experience with Linux development, Experience building, deploying, and supporting production systems, Strong performance tuning, debugging, and optimization skills, Understanding of financial markets (equities, futures, FX) and market data usage, Strong analytical and problem-solving skills 📃 Skills: Python, C++, SQL, Linux, CMake, Git 🏢 Description: Quantitative Software Engineer Warsaw, hybrid. Join a team building a research-to-trading platform used to design, test, and deploy quantitative investment strategies. This is a hands-on engineering role focused on high-performance analytics, market data, and production trading infrastructure . Responsibilities Develop and maintain C++ and Python applications supporting quantitative research and trading. Build analytics, pricing libraries, and tools for backtesting, simulation, and production trading. Design and optimize data pipelines handling large historical and real-time market datasets. Develop and support production services, including testing, deployment, and monitoring. Improve platform scalability, reliability, and performance. Partner directly with researchers and investment professionals to deliver robust, production-grade solutions. Contribute to technical roadmap, automation, and engineering best practices. Requirements Degree in Computer Science, Engineering, Mathematics, Physics, or a related quantitative field. 3+ years of software engineering experience in production environments. Strong programming skills in Python and modern C++ . Experience with SQL, relational databases, and Linux development . Experience building, deploying, and supporting production systems. Strong performance tuning, debugging, and optimization skills. Understanding of financial markets (equities, futures, FX) and market data usage. Strong analytical, problem-solving, and communication skills. Nice to Have Experience working directly with quantitative research or trading teams. Background in low-latency or high-throughput systems. Experience with large-scale data processing and analytics platforms.

🏢 Summary: Short-term B2B contract for a Fullstack Developer (Node.js + TypeScript) to build and maintain backend services for a regulated digital capital market platform in the fintech domain. The role focuses on developing scalable APIs, integrating KYC/AML providers, and implementing authentication, authorization, and investor management features. The project emphasizes code quality, security, and collaboration with cross-functional teams. 🗂️ Requirements: 3+ years commercial experience with Node.js, Strong knowledge of TypeScript, Experience building REST APIs, Experience with NestJS or similar framework, Experience with Prisma ORM or similar ORM, Understanding of authentication and authorization, Experience with relational databases, Experience writing automated tests, Knowledge of clean code principles, English for daily communication 📃 Skills: Node.js, TypeScript, NestJS, Prisma, REST, SQL, Jest, Supertest, Authentication, Authorization 🏢 Description: Description We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation. FULLSTACK DEVELOPER B2B: 80-100 PLN / hour START - 1 JULY TERM - 6 WEEKS LOCATION: POLAND (REMOTE) *We offer a hybrid work model, allowing you to balance office presence with remote work. However, it's important to note that the role emphasizes a stronger presence in the office to foster teamwork and effective communication. Requirements Key Duties and Services: A Roadmap to Your Professional Success Your Mission : We are looking for a Fullstack Developer (Node. js + TypeScript) to join a fintech project focused on building a regulated digital capital market platform. The system supports investor onboarding, KYC/AML verification, investor classification, access control, audit logging, and digital wallet infrastructure. You will work closely with senior engineers and architects to build scalable backend services and integrations with fintech and blockchain-related providers. Scope of services: Developing and maintaining backend services using Node. js + TypeScript Building and extending REST APIs for onboarding, authentication, and user management Integrating external KYC/AML and identity verification providers Implementing business logic for investor classification and access control Creating and maintaining database models using Prisma ORM Writing unit and integration tests (Jest, Supertest) Participating in code reviews and technical discussions Collaborating with frontend, mobile, QA, and product teams Supporting code quality, security, and system reliability Here’s the set we are required: 3+ years of commercial experience with Node. js backend development Strong knowledge of TypeScript Experience building REST APIs and backend systems Experience with NestJS or similar frameworks Experience with Prisma ORM or similar Understanding of authentication & authorization concepts Familiarity with relational databases Experience writing automated tests (Jest, Supertest or similar) Strong understanding of clean code principles and best practices Good communication skills and English for daily cooperation Nice to have: Experience with class-validator / DTO-based validation Familiarity with GraphQL (Apollo) Experience in fintech / banking / regulated environments Knowledge of KYC/AML processes Exposure to blockchain, wallets, or digital assets Career Advancement at Your Fingertips: Explore Opportunities with Us By joining us you will get: Work on a modern fintech platform with real regulatory requirements Collaboration with experienced senior engineers and architects Opportunity to work with KYC/AML, identity systems, and fintech integrations Influence on system design and backend architecture decision A strong engineering culture focused on quality, security, and scalability Navigating the Hiring Process: What does the recruitment process for that position look like? HR Screening with Talent Acquisition Specialist (30 min) Technical Interview (60 min) Interview with Delivery Manager (30 min) Job Offer