Senior Backend Engineer @

2 days ago


Remote Warsaw Krakow, Czech Republic Synerise Full time
What will make us a perfect match?
  • Programming skills in Scala.
  • Solid understanding of Kafka, Kubernetes.
  • Experience with (at least one): Akka / ZIO / Cats.
  • Experience with SQL and NoSQL databases.
  • Capacity to plan and scale systems to keep up with incredible growth.
  • Excellent troubleshooting and debugging skills.
  • A passion for building tools and automating everything.
  • Strong analytical skills.
What will convince us even more? 
  • Understanding of JVM internals.
  • Experience with microservicesarchitecture.
  • Experience with cloud environments (Azure / GCP).
  • Programming skills in Java / Rust /Python.
  • Knowledge of ElasticSearch/Opensearch.
  • Basic knowledge of AI/ML concepts.
    • Do you want to create a software that:
      • enables data processing and sending recommendations in real time
      • is reliable and scalable
      • processes thousands of request per second
      • uses architecture based on microservices
      • shows dynamic, personalized content in 50 milliseconds
      • allows for the aggregation of large data sets on customer behavior in broadly understood commerce
      • is based on artificial intelligence, semantic web, predictive analysis, machine learning and marketing automation.

Working with us you will have the chance to immerse yourself in a challenging projects in an interdisciplinary team.
OurBackend Team uses Scala, Rust, Python, Kafka, ElasticSearch, ScyllaDB,Azure, GCP, Kubernetes, our colleagues from the Frontend Team use JavaScript(React.js), ES6, Redux, TypeScript, Webpack. Both teams are supported by the QA and Infrastructure Teams. We like to experiment and we have the environment to do it.
We work on the borderline of science and technology, creating outstanding solutions. If you are open-minded and willing to constantly develop yourself – Synerise is the place for you.

Synerise is not just another tech company. It is a space where our brilliant team consequently brings technology change to the business world and instead of following known paths, we are creating a new one – a next-generation, fully personalized and AI-driven customer experience.

,[What will you do on a daily basis?, Develop architecture and design patterns to process and store high-volume data sets., Develop software with a core focus around optimisation and performance., Translate complex functional and technical requirements into detailed design., Perform analysis of vast data stores and uncover insights.] Requirements: Scala, Kubernetes, Apache Kafka, SQL, NoSQL, Akka/ZIO/Cats, Java, Python, Rust, JVM internals, Elasticsearch, Opensearch

  • Remote, Czech Republic Arche Consulting Full time

    About Arche Consulting:We are a leading consulting company that provides top-notch services, enabling us to build efficient and modern businesses.Our goal is to transform business operational and technological models to adapt to a rapidly changing world.We offer contracts of employment with additional benefits, including life insurance, private healthcare,...


  • Remote, Kraków, Warsaw, Czech Republic Adaptiq Full time

    At least 6 years of experience as a Backend Software Engineer, with a proven track record of delivering high-quality software solutionsAt least 5 years of experience with Node.jsAt least 1 years of experience with frontend development using either React, or Vue or AngularExperience with AWS various services or other cloud providersAbility to work effectively...


  • Remote, Czech Republic 7N Sp. z o.o. Full time

    Company Overview7N Sp. z o.o. is a company that values expertise and experience in software development. Our team consists of seasoned professionals who have extensive knowledge of various technologies.Job DescriptionWe are seeking a skilled Senior Backend Software Engineer - Cloud Expert to join our team. As a key member, you will be responsible for...

  • Senior Backend

    5 days ago


    Remote, Czech Republic Lacero Full time

    At least 5 years of experience in software development;3+ years of experience in Javascript development; Strong skills in nodeJS, Typescript;Understanding and using SOLID principles;Strong experience in working with relational databases, such as PostgreSQL;Willingness to learn and understand new technologies;At least an intermediate level of English;Product...

  • Senior Backend

    1 day ago


    Remote, Kraków, Czech Republic N-iX Full time

    Must-Have Qualifications:At least 3-4+ years of hands-on coding experienceJava Spring Boot or Scala knowledgeExperience with Object Oriented/Functional ProgrammingDesigning fast, scalable, and responsive APIsExperience developing cloud-native apps - AWS is preferableExperience with SQL and NoSQL (DDB) databasesExperience with KafkaNice-to-Have...


  • Remote, Krakow, Czech Republic Beekeeper AG Full time

    What we look for in you5+ Years of Software Engineering Experience: Demonstrated expertise in both backend and frontend development for modern, cloud-based applications.Proficiency in Backend Languages: Strong skills in Java; familiarity with frameworks such as Quarkus or Spring Boot is a plus.Front-End Mastery: Hands-on experience with JavaScript/TypeScript...


  • Remote, Czech Republic VARTEQ Inc. Full time

    We are seeking an experienced and skilled PHP developer to join our team at VARTEQ Inc. in developing a dynamic e-learning platform.Key Responsibilities:Design and develop scalable, secure, and high-performance applications using PHP and related web technologiesCollaborate with cross-functional teams to develop and implement new featuresTroubleshoot and...


  • Remote, Kraków, Warszawa, Kyiv, Czech Republic TechHunt Full time

    Qualifications:Strong proficiency in Scala and the ability to design and build robust backend services. Experience with Python for data pipeline development, ETL processes, or data integration Solid understanding of database systems (SQL/NoSQL) and experience working with large datasets. Experience with K8S, writing and maintaining Helm...


  • Remote, Czech Republic ART2HIRE Full time

    Requirements:Strong proficiency in backend development using languages such as Python, Go, or similar.Familiarity with VPNs and network security principles.Experience in building RESTful APIs and microservices architecture.Knowledge of automation tools and practices for infrastructure management.Familiarity with cloud platforms (e.g., AWS, Azure, GCP) and...


  • Remote, Warszawa, Czech Republic Appfire Full time

    What you need to have:Proven record of delivery of multiple scalable, high-traffic cloud applications.Proficiency with back-end technologies, specifically API development with .NET and C#. Experience with Node.js with Typescript is a plus but not required.Truly engineering approach to solving problems. Strong theoretical foundations of computer science...


  • Remote, Krakow, Czech Republic Beekeeper AG Full time

    At Beekeeper AG, we're seeking a skilled Fullstack Software Engineer to join our team.About the RoleWe're looking for a talented individual to design, implement, and maintain end-to-end features across our front-end (Vue.js, JavaScript/TypeScript) and backend (Java) systems. As a Fullstack Software Engineer, you'll work closely with product managers,...


  • Remote, Lviv, Kyiv, Czech Republic Spendbase Full time

    4-6 years of commercial experienceProficiency in Node.js, TypeScript, and Nest.jsKnowledge of PostgreSQLFamiliarity with DockerStrong desire to learn new skills and gain knowledgeMeticulous attention to detailsStrong problem-solving skillsUpper-intermediate English is a must Spendbase is the one-stop shop for optimizing your spending on cloud and...

  • Backend Engineer

    24 hours ago


    Remote, Kraków, Czech Republic N-iX Full time

    About N-iX:We are a leading software development company with expertise in creating innovative solutions for various industries. Our customer is the European online car market with over 30 million monthly users, operating in 18 countries.As a Senior Backend Engineer at N-iX, you will be part of shaping the future of online car markets and enhancing the user...


  • Remote, Czech Republic Kozak Group Full time

    Tech Stack & Requirements:Must-Have: Proficient in Node.js for server-side development.Strong experience in backend development.Knowledge of Fastify or similar backend frameworks (e.g., Express.js, NestJS).Hands-on experience with e-commerce platforms.Familiarity with headless CMS solutions.Optional but Highly Valued:Experience with Commerce...


  • Remote, Czech Republic HBM Full time

    WE EXPECT FROM YOU Degree (bachelor or master) in computer science or a comparable course of study5+ years in Software Engineering3+ years of experience with Node.js/TypeScriptExperience with NestJS or other backend frameworkREST API development experienceExperience with identity provider(s) integration leveraging OIDC/OAuth2.0 protocolsExperience with...


  • Remote, Kraków, Czech Republic ITMatch Full time

    We are seeking a talented Backend Software Engineer to join our team in Poland. As a cloud native architect, you will be responsible for designing and implementing scalable and secure backend services using Java and Spring.The ideal candidate will have a strong understanding of microservices architecture, API development, and experience working with SQL and...


  • Remote, Czech Republic ART2HIRE Full time

    About the Role:We are seeking a skilled Backend Software Engineer to join our team, focusing on developing and maintaining backend systems and tools that support infrastructure management, VPN protocol configuration, and automation.Key Responsibilities:Infrastructure Management: Design, develop, and maintain internal systems for managing and monitoring...

  • Backend Engineer

    24 hours ago


    Remote, Warszawa, Czech Republic Appfire Full time

    OverviewAt Appfire, we're pushing the boundaries of time tracking innovation. Our team is passionate about delivering seamless, user-centric experiences that empower teams to be productive and efficient.Company Overview7pace Timetracker is an industry leader in deeply integrated, effortless time tracking for teams of any size. With transparent time tracking...


  • Remote, Czech Republic Kozak Group Full time

    About the Role:We are seeking a highly skilled Senior E-commerce Backend Expert to join our dynamic team at Kozak Group. As a key member of our development team, you will be responsible for designing and implementing scalable e-commerce solutions using Node.js.Key Responsibilities:Develop high-performance e-commerce backend systems using Fastify or similar...


  • Remote, Czech Republic ETFbook Full time

    About ETFbookWe are a cutting-edge platform providing actionable insights for the global ETF market. Our mission is to shape the future of ETF data and analytics, serving the largest institutional clients in the industry and striving to become a global leader in our domain.Job DescriptionWe are seeking a highly skilled Senior Software Engineer to join our...