June 20, 2026

Senior Software Engineer — Data Products

Senior • Hybrid

170,000 - 260,000 PLN

Warsaw, Poland

Who we are

At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for job seekers and companies around the world to find a perfect match, in a fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring.

At our Tech Hub, located near Wilanowska Metro, we are more than 300 ambitious specialists working on the development of our IT products. We are proud to be part of The Stepstone Group, a global expert in job-tech platforms and e-recruiting.

Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the world’s leading job-tech platform.

Job Description

The job at a glance

As a Senior Software Engineer, you’ll be responsible for building innovative data products that help recruiters find the right talent. You will design and implement high-performance applications using Kafka, while collaborating with cross-functional international teams.

Working in the Data Products department, your work will directly power AI Search and ML models across multiple markets.

This is so important to us. By joining our team, you will play a vital role in reshaping the labour market, helping it work for everyone, regardless of background.

Your responsibilities

  • Build and evolve data products that serve as the backbone for job listing data across Stepstone’s global platform

  • Design and implement high-performance data pipelines using Kafka

  • Collaborate with cross-functional teams to deliver impactful data engineering solutions

  • Manage and improve ETL pipelines and data orchestration across a rich ecosystem of data sources

  • Continuously improve and scale our data infrastructure to support a growing number of use cases and markets

Qualifications

Your skills and qualifications

  • Proficiency in coding with Java

  • Practical knowledge of Airflow or similar orchestration tools

  • Experience working with Kafka (MSK)

  • Strong knowledge of SQL

  • Experience with Big Data, Data Warehousing, and ETL

Nice to have / you may also bring:

  • Experience with AWS services (e.g. Glue, EMR, ECS with Docker, Redshift, DynamoDB, S3)

  • Familiarity with Infrastructure as Code tools such as Terraform

  • Strong communication skills in English (B2+ level)

  • A passion for data-driven solutions that make a real impact

👉 You don’t need to meet every requirement to apply — we’re happy to support your growth in areas that are new to you.

Additional Information

Your benefits

We’re a community here that cares as much about your life outside work as how you feel when you’re with us. Because your job shouldn’t take over your life, it should enrich it. Here are some of the benefits we offer:

  • Premium medical and dental care

  • Life insurance

  • Flex Benefits – Worksmile Cafeteria System (Multisport, vouchers, tickets, etc.)

  • Employee Referral Program

  • Hackathons, Knowledge Sharing Hours, in-house projects

  • Tech and sport communities

  • Events and integration parties

  • Charity initiatives, 2 extra volunteer days

  • English/German classes

  • Game room and chillout zone

Our commitment

Equal opportunities are important to us. We believe that diversity and inclusion at The Stepstone Group are critical to our success as a global company, so we want to recruit, develop, and keep the best talent.

We encourage applications from everyone, regardless of background, gender identity, sexual orientation, disability status, ethnicity, belief, age, family or parental status, or any other characteristic.

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Warsaw, Poland

8,000 - 11,500 USD

🏢 Summary: Senior Backend Engineer role focused on building and scaling backend systems for an AI-driven product that transforms complex government data into actionable insights. The position involves designing data ingestion, processing pipelines, and distributed infrastructure from scratch, with full ownership from architecture to production. You will work closely with a small senior team to deliver scalable, production-ready systems. 🗂️ Requirements: 6+ years of Backend Engineering experience, Experience in JVM ecosystem, Experience in product companies (B2B SaaS preferred), Experience designing and owning backend systems in production, Strong knowledge of system design and scalability, Experience building asynchronous or distributed systems, Ability to make and justify technical decisions, Fluency in English, Valid work authorization in Europe or LATAM 📃 Skills: Kotlin, Java, JVM, SQL, GCP, Messaging, Queues, DistributedSystems, SystemDesign, DataPipelines, LLMs, AI 🏢 Description: About the role We’re looking for a Senior Backend Engineer to join our early team and help build our product from zero to one. You’ll work on a product that helps companies navigate complex government data, from contracts and grants to market signals and turn it into actionable insights using AI. On the backend side, this means working on data ingestion, processing, and the infrastructure that powers search and AI-driven workflows at scale. You’ll collaborate closely with a small, senior team and have real ownership, from shaping solutions to shipping them to production and improving them over time. You might be a fit if you: Must have: 6+ years of experience as a Backend Engineer, preferably in the JVM ecosystem (we use Kotlin on the backend) Experience working in product companies (B2B SaaS preferred) with direct impact on shipped features Experience working in small companies or startups would be a strong advantage Experience designing and owning backend systems in production (from initial design to deployment and ongoing improvements) Strong understanding of system design, including scalability, failure handling, and trade-offs Experience building asynchronous or distributed systems (e.g. messaging, queues, event-driven systems) Ability to make and justify technical decisions, not just implement given solutions Fluency in written and spoken English Nice to have: Experience with large-scale data processing, scraping, or data pipelines Experience working with LLMs / AI-related systems Experience with GCP or similar cloud environments How We Work Build Bridges to Help Customers Win - We pride ourselves on being obsessively customer-centric. Shooting Star Speed - We move with extreme speed. We value momentum, decisiveness, and the ability to accelerate when it matters. Fun Is a Feature - Fun is a Feature means we intentionally design Starbridge to be an energizing place to do hard work. Joy, humor, and camaraderie make great teams faster, sharper, and more resilient. In the Arena - We believe the best ideas come from living close to the work, feeling the friction, hearing the nuance, and experiencing the details firsthand. Benefits include: Competitive salary + early-stage equity Unlimited PTO Regular off-sites (NYC + global locations) Interview Process We move fast — really fast. Getting back to someone today beats tomorrow, and our interview process reflects that mindset. Please keep us posted on your timeline so we can move quickly and speed things up where needed. After submitting your application, the team reviews your CV and statement of exceptional work. If your application passes this stage, you will be invited to a 30-minute interview during which a member of our team will make sure you're a good fit for the role. You will have the opportunity ask questions and learn more about the role as well. We'll then send you a programming challenge that consists of two parts: LeetCode and SQL. Beyond that step, you will enter the main process, which consists of three interviews: System design exercise hands-on. Live coding in Java/Kotlin. Product thinking and past work. All interviews will be conducted via Google Meet. Eligibility to Work in Europe or LATAM: Candidates must hold valid authorization to work in the country where they will be based. At this time, we are unable to offer visa sponsorship or assist with work permit applications.

Technology

EPAM Systems

Senior Java Software Engineer

Senior

Hybrid

Krakow, Poland

🏢 Summary: Senior Java Software Engineer role focused on building complex, data-driven solutions for financial services within a data engineering initiative. The position involves designing and optimizing data sourcing, processing, and ingestion pipelines using modern cloud and big data technologies. You will work on mission-critical systems supporting portfolio management, investment operations, and regulatory platforms. 🗂️ Requirements: Bachelor’s degree in Computer Science or relevant certification, Proficiency in Java, Proficiency in Spark, Proficiency in Python, Experience with data streaming and real-time and batch processing, Experience with CI/CD pipelines (ADO, GitHub or GitLab), Experience with TDD, Experience with cloud architecture (Azure, AWS or GCP), Experience with Hibernate and relational databases, Knowledge of software design principles 📃 Skills: Java, Spark, Python, AWS, Azure, GCP, Databricks, Kubernetes, Hibernate, SQL, GitHub, GitLab, ADO, CI/CD, TDD 🏢 Description: We are looking for a Senior Java Software Engineer to join our team working on complex, data-driven solutions for the financial services domain. The role is part of a data engineering initiative focused on data sourcing, processing, and ingestion for mission-critical applications. You will contribute to projects supporting Portfolio Management, Investment Operations, Regulatory Reporting, ETF platforms, Data and Workflow Management, as well as systems used for Investment Strategy and Research. This is an excellent opportunity to work with modern cloud technologies and large-scale data platforms in a highly impactful environment. This role offers a hybrid model, with 3 days per week working from the client's office in Krakow. If you're ready to make an impact in a dynamic environment, we want to hear from you! Responsibilities Design, develop, and maintain high-performance Java-based applications for data engineering solutions Build and optimize data sourcing, transformation, and ingestion pipelines Develop and integrate services using AWS cloud services Implement robust persistence layers using Hibernate and relational databases Collaborate with data engineers, analysts, and business stakeholders to deliver scalable solutions Ensure high code quality through best practices, code reviews, and automated testing Troubleshoot, debug, and optimize performance of existing systems Contribute to architectural decisions and technical design discussions Requirements Bachelor’s degree in Computer Science or relevant certification Working with modern technologies such as data streaming, real-time and batch processing; experience with Databricks and Kubernetes is advantageous Proficiency with Java, Spark and Python Significant experience with DevOps CI/CD pipelines and concepts - ADO, GitHub or Gitlab Significant experience using TDD Well versed in Cloud architecture and have delivered to one or more; Azure (preferred), AWS or GCP Experience of software design principles Worked with modern tech – data streaming, real-time & batch processing Databricks and Kubernetes We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

Technology

Tenarai

Senior Java Developer

Senior

Hybrid

Krakow, Poland

130 - 150 PLN

🏢 Summary: Senior Software Engineer role focused on designing and building a next-generation, cloud-native Order Management System for airlines. The position involves developing high-scale, low-latency microservices on Google Cloud Platform to replace legacy ticketing with a modern Offer & Order ecosystem. The engineer will drive architecture, ensure software quality, and contribute to mission-critical systems processing millions of transactions daily. 🗂️ Requirements: 6+ years experience in Agile/Scrum software development, Degree in Computer Science or equivalent certification, Advanced backend development in Java, Experience with Spring and Web Services, Hands-on experience with Google Cloud Platform, Experience in cloud-native microservices architecture, Strong knowledge of algorithms and data structures, Experience with CI/CD pipelines, Experience with containerization and orchestration, Ability to troubleshoot high-volume low-latency systems, Legal work permit in Poland 📃 Skills: Java, Spring, GCP, Microservices, REST, CI/CD, Git, Maven, Jenkins, Docker, Kubernetes, Algorithms, DataStructures, Scrum 🏢 Description: Join our global, decision-driving team based in Krakow and become a key player in fundamentally transforming the global travel industry. We are designing, building, and maintaining a next-generation, high-scale, and low-latency Order Management System for airlines. Our mission is to replace legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. We develop scalable, microservice-based, and cloud-oriented architectures running on Google Cloud Platform (GCP). This is a mission-critical platform where we leverage AI productivity tools to securely process millions of global transactions and support millions of traveling passengers daily. If you want to tackle complex state management, work with mature Scrum processes, and build a massive market differentiator, this journey is for you. Responsibilities: As a Senior Software Engineer, you will plan, design, develop, and test complex software systems, having a direct impact on our architectural direction. Your main duties will include: Development & Design: Developing, coding, testing, and debugging complex software solutions and new cloud-native microservices using advanced technologies. Architecture & Innovation: Actively designing prototypes, proposing architectural enhancements, and handling the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Quality & Best Practices: Encouraging high coding standards, promoting best practices, and ensuring top-tier software quality. Mentorship & Leadership: Providing technical mentorship and cultural/competency-based guidance to the team, sharing larger business/product context, and mentoring on specific tech stacks. Collaboration: Regularly interacting with architects, product managers, and technical panels to align business requirements with advanced technology. Representing the team in cross-functional and cross-team meetings. Requirements: Experience & Education: 6+ years of related professional experience in fast-paced software development within an Agile/Scrum environment. Degree in Computer Science, a related field, or equivalent professional certifications. Technical Expertise: Deep knowledge of the Java ecosystem, including advanced backend programming, solution design, Spring, and Web Services. Strong grasp of cloud technologies, particularly Google Cloud Platform (GCP) and cloud-native application development. Solid understanding of computer science fundamentals, including algorithms, data structures, and computational complexity. Practical experience with CI/CD pipelines and containerization tools (e.g., Git, Maven, Jenkins, Docker, Kubernetes). Proven ability to troubleshoot intricate software issues and handle high-volume, low-latency transaction systems. Communication & Personal Attributes: Excellent English communication skills (both written and verbal) for seamless daily collaboration in a global environment. Exceptional analytical and problem-solving skills. Strong interpersonal skills with the ability to influence technical decisions and gain acceptance from others in sensitive situations without damaging relationships. Self-disciplined, commitment-oriented, and passionate about continuous learning and staying up-to-date with industry trends. Must possess a legal work permit in Poland Benefits: General benefits - depends on the form of employment Hybrid work model combining office & remote work - 3 x per week work from the office Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

Technology

Shaped Thoughts

Senior Software Engineer (Java)

Senior

Remote

170 - 200 PLN/hr

🏢 Summary: Senior Software Engineer role focused on designing, building, testing, and deploying cloud-based distributed systems using modern software craftsmanship practices. The position involves end-to-end ownership of microservices-based solutions in a remote-first environment, leveraging cloud platforms and AI-assisted development tools. The offer emphasizes high-quality delivery, clean architecture, and close collaboration with stakeholders. 🗂️ Requirements: 7+ years of commercial experience with Java or Kotlin, Hands-on experience with SQL and NoSQL databases, Understanding of distributed systems, Experience with event-driven architectures, Experience with microservices architecture, Experience with cloud platforms (AWS, GCP or Azure), Experience with automated testing including acceptance and performance tests, Ability to design and deploy cloud-based systems 📃 Skills: Java, Kotlin, SQL, NoSQL, Microservices, AWS, GCP, Azure, TDD, BDD, DDD, AI, Claude, Codex 🏢 Description: We are looking for a Senior Software Engineer who is hungry to deliver quality software at pace, by utilising the latest technology trends and modern Software Craftsmanship techniques. Who are we ? We are a remote-first boutique software house company formed by a group of seasoned software experts (average experience in the team is 12 years). What connected all of us, despite a long-term relationship, is a passion for building Great Software that matters. We believe in people, so this is why the key values of Shaped Thoughts are autonomy and trust. Our people have a real and direct impact on what and how we build things. We put extra effort into ensuring everyone can make a difference and grow among other experts. Qualifications: 7+ years of professional experience with Java or/and Kotlin Hands-on experience with SQL and NoSQL Understanding of distributed systems and event-driven architectures Microservices experience Experience with cloud platforms (AWS / GCP / Azure) Automated testing (including acceptance tests, performance tests) Nice to have: TDD, BDD practitioner Domain Driven Design knowledge AI-assisted software development experience As a part of the team you will : Design, implement, code review, test and deploy a cloud-based systems Develop software from start to finish - you ship it, you run it! Work closely with senior stakeholders on identifying business requirements and shaping the product Deliver quality technical solutions that come from a robust design and clean architecture Build & improve software delivery process using latest tools such as Claude Code or Codex How do we work? We work as a team - all people can freely exchange knowledge and tasks, that’s why we’re looking for strong team players We believe in continuous improvement (Kaizen mindset) We’re happy to share knowledge and spend time learning our domain and new technologies We value asynchronous communication for work, however we meet in person to improve our personal relationships What do we offer ? Being a part of a strong senior team with the ability to learn and exchange knowledge Remote first work environment B2B rate 170-200 PLN / hour dependent on your level of expertise Open bounded B2B contract Recruitment process It consists of the following stages: CV screening Tech screening (45 min) Live coding session (1h) Architecture task (1h) At least one of the stages must be completed on-site in one of the major cities: Wrocław, Poznań, Katowice, Kraków, Warszawa or Gdańsk. We actively encourage AI-assisted development in our daily work. However, during recruitment we want to assess your individual skills - please don't use AI assistance unless explicitly permitted for a given stage.