Elastic Search Engineer

🏢 Summary: The role involves developing and maintaining internal platforms and system integrations across HR, recruitment, and corporate operations. It combines backend and frontend development with API design, enterprise system integration, and platform optimization. The engineer will enhance system reliability, scalability, and deployment processes while contributing to architectural decisions. 🗂️ Requirements: 5+ years of software development experience, Experience in system integrations, Proficiency in Java or Python, Experience with frontend technologies, Experience building web applications, Strong API design knowledge, Experience integrating third-party services, Strong SQL knowledge, Experience with relational databases, Experience with Git, Experience with CI/CD pipelines, Ability to troubleshoot production systems 📃 Skills: Java, Python, JavaScript, HTML, CSS, SQL, Git, CI/CD, APIs, REST, SaaS 🏢 Description: Fullstack / Integration Engineer We are looking for an experienced engineer to support the development and evolution of internal platforms and integrations across key business areas such as HR, recruitment, and corporate operations. This role combines application development, systems integration, and platform improvement initiatives. 🔹 Key responsibilities Build and maintain integrations between internal systems and external SaaS solutions Develop and enhance internal applications and corporate-facing web platforms Design APIs and data flows connecting various enterprise systems (HR, finance, recruitment) Improve existing platforms in terms of performance, scalability, and maintainability Work closely with business stakeholders to translate needs into technical solutions Ensure system reliability through monitoring, alerting, and operational best practices Support and optimize deployment processes and development workflows Contribute to architectural decisions and technical standards Share knowledge within the team and support less experienced colleagues 🔹 Requirements 5+ years of experience in software development and system integrations Proficiency in at least one backend language - Java or Python Familiarity with frontend technologies (JavaScript, HTML, CSS or frameworks) Experience building and maintaining web applications (internal and/or external) Strong knowledge of API design and integration with third-party services Solid SQL skills and experience working with relational databases Experience with version control (e.g. Git) and CI/CD practices Ability to troubleshoot production systems and resolve issues effectively Strong communication skills and ability to work with business stakeholders 🔹 Nice to have Experience working with HR or recruitment systems and related SaaS platforms Exposure to platform modernization or system transformation initiatives

🏢 Summary: Fullstack Engineer role focused on building and integrating AI-powered features using LLMs within modern web applications. The position involves designing scalable APIs, AI workflows, and hybrid solutions combining AI with business logic across frontend and backend systems. You will collaborate cross-functionally to deliver production-ready AI solutions in a cloud environment. 🗂️ Requirements: 5+ years TypeScript and Node.js experience, 2+ years React or Next.js experience, Experience with cloud platforms (preferably GCP), Experience with PostgreSQL, Experience building AI-powered applications using LLMs and APIs, Strong prompt engineering skills, Experience designing AI workflows and orchestration, Understanding of AI limitations and best practices 📃 Skills: TypeScript, Node.js, React, Next.js, GCP, PostgreSQL, LLMs, APIs, Prompting, LangChain, RAG, Embeddings, VectorDB 🏢 Description: Fullstack Engineer - Node/React/Typescript + AI Solutions We are looking for an experienced Fullstack Engineer to build AI-powered solutions and shape how AI is used across modern systems. What you’ll do: Develop AI-driven features using LLMs Integrate AI APIs into backend and frontend applications Design scalable APIs and AI workflows (prompting, orchestration, response handling) Build hybrid solutions combining AI and business logic Collaborate with Data Engineers and other teams Requirements: 5+ years with TypeScript & Node.js (APIs, integrations) 2+ years with React (or Next.js) Experience with cloud (preferably GCP) and PostgreSQL Experience building AI-powered applications (LLMs, APIs) Strong prompt engineering & AI workflow design skills Understanding of AI limitations and best practices Nice to have: RAG, embeddings, vector databases LLM frameworks (e.g. LangChain)

🏢 Summary: Backend-focused Fullstack Engineer role (80% backend) focused on designing and maintaining scalable, secure backend services and APIs for data-driven and integration platforms. The position involves working with distributed systems, system integrations, and cloud infrastructure while contributing to frontend development with React. You will own features end-to-end from design to deployment in a distributed international team. 🗂️ Requirements: ~5 years backend experience with Node.js and TypeScript, Strong knowledge of relational databases, Experience building REST APIs and distributed services, Hands-on experience with cloud infrastructure, Experience with Kubernetes, Practical experience with React, Experience with system integrations 📃 Skills: TypeScript, Node.js, React, PostgreSQL, GCP, Kubernetes, REST, SQL 🏢 Description: Fullstack Engineer (Backend-Focused) We’re looking for a Backend-heavy Fullstack Engineer (80% backend, 20% frontend) to join a distributed team building critical data and integration platforms. What You’ll Do Design and maintain scalable, secure backend services and APIs Work on system integrations and data-centric platforms Collaborate across frontend, backend, and data teams Take full ownership of features from design to deployment Tech Stack TypeScript / Node.js , React Relational databases (PostgreSQL or similar) Cloud infrastructure (GCP), Kubernetes REST APIs, system integrations, distributed services Who We’re Looking For ~5 years backend experience with Node.js / TypeScript Strong relational database knowledge Experience with React (frontend contribution) Cloud and Kubernetes experience Excellent communication skills , ownership, and proactive collaboration Comfortable working in distributed international teams

🏢 Summary: The offer is for an experienced Node.js Engineer to design, build, and scale backend services for a modern data-driven platform. The role involves developing REST/GraphQL APIs, contributing to system architecture, and owning the full development lifecycle in an Agile environment. The position requires close collaboration with cross-functional teams and active participation in technical decision-making. 🗂️ Requirements: 5+ years of experience with JavaScript and Node.js, Strong proficiency in TypeScript, Experience designing and building REST or GraphQL APIs, Knowledge of relational and NoSQL databases, Experience with AWS services, Understanding of software architecture and scalable systems, Experience with Express or Next.js frameworks, Knowledge of web fundamentals and security best practices, Fluent English (B2+), Availability overlapping with US Eastern Time core hours 📃 Skills: JavaScript, Node.js, TypeScript, REST, GraphQL, MySQL, MongoDB, Redis, AWS, EC2, Lambda, SQS, Express, Next.js, CORS, OWASP, Scrum 🏢 Description: We are looking for an experienced Node.js Engineer to join a team building and scaling a modern data-driven platform. ✅ Your responsibilities: Design, build, and maintain backend services using Node.js Develop scalable APIs (REST / GraphQL) Contribute to system architecture, performance, and scalability improvements Own the full development lifecycle: implementation, testing, deployment, and maintenance Collaborate closely with product, frontend, and DevOps teams in an Agile (Scrum) environment Participate in technical decision-making and drive best practices 🧠 Our requirements: 5+ years of experience with JavaScript / Node.js Strong proficiency in TypeScript Hands-on experience designing and building RESTful and/or GraphQL APIs Solid understanding of databases (relational and NoSQL, e.g., MySQL, MongoDB, Redis) Experience with AWS (e.g., EC2, Lambda, SQS) Good understanding of software architecture and scalable systems Experience with frameworks such as Express or Next.js Knowledge of web fundamentals (e.g., CORS) and security best practices (OWASP) Ability to work independently and support team-level technical decisions Fluent English (B2+) Availability overlapping with US Eastern Time core hours 🌟 What we offer: Remote work Flexible cooperation model (B2B / employment contract) Opportunity to work on a scalable, data-focused platform Collaboration with a highly skilled engineering team Real impact on technical decisions and system architecture

🏢 Summary: Backend Engineer role focused on designing, building, and maintaining scalable backend services in a cloud-native AWS environment. The position involves developing production-grade APIs and services using TypeScript and .NET, with strong emphasis on CI/CD, Infrastructure as Code, and cloud-native best practices. The role supports secure, scalable backend systems with close collaboration across platform and operations teams. 🗂️ Requirements: Strong experience building and maintaining scalable APIs and backend services, Hands-on experience with CI/CD pipelines using GitHub Actions or GitHub Workflows, Strong development experience with TypeScript, Strong development experience with .NET (C#), Experience deploying and operating workloads in AWS Cloud, Experience using Terraform for Infrastructure as Code, Experience designing and consuming RESTful APIs or event-driven services, Understanding of cloud-native patterns, Experience with relational databases and SQL, Fluent English 📃 Skills: TypeScript, .NET, C#, AWS, Terraform, SQL, REST, CI/CD, GitHub, GitHubActions, APIs, IAM, Lambda, ECS, Fargate 🏢 Description: We are looking for a Backend Engineer to design, build, and maintain backend services in a modern cloud-native AWS environment. Core skills & experience: Strong experience as a Backend Developer, building and maintaining scalable APIs and backend services Hands-on experience with CI/CD pipelines, preferably using GitHub Actions / GitHub Workflows Strong development experience with TypeScript and .NET (C#), including building and operating production services Familiarity with AWS Cloud, including deploying and operating backend workloads in AWS Experience using Terraform for Infrastructure as Code (IaC) Related technologies / domain knowledge: Experience designing and consuming RESTful APIs and/or event-driven backend services Understanding of cloud-native patterns (stateless services, scaling, resiliency, observability) Experience working with relational databases (SQL) and backend integrations Nice-to-have / preferred experience: Experience with containerized workloads (e.g. ECS Fargate or similar) Experience with Lambda functions Familiarity with IAM and AWS security best practices Exposure to data platforms or ETL-heavy environments Experience working in environments with high operational and security requirements General expectations: Able to take ownership of backend services from development through production Comfortable working closely with platform, data, and operations engineers Focused on clean code, automation, and reliable delivery through CI/CD Used to working with SCRUM principles, preferably in JIRA Fluent English Other Details: The role is designed for a cloud-native environment, supporting development across various backend services focused on scalability and security.

🏢 Summary: The role involves designing, developing, and maintaining cloud-native enterprise applications as a Fullstack Engineer using Java and Angular. The position focuses on building scalable backend and frontend solutions within a microservices architecture, supporting CI/CD, containerization, and secure application design. The engineer will work in Agile teams and contribute to architecture, deployment, and system reliability. 🗂️ Requirements: 5+ years of backend development experience, Strong expertise in Java 17+, Experience with Spring Boot and Spring Security, Strong knowledge of Angular and TypeScript, Experience with PostgreSQL and Hibernate/JPA, Experience with microservices architecture, Hands-on experience with Maven, Git, GitHub, CI/CD, Knowledge of Kubernetes and Docker, Experience with SQL databases, Experience with REST API development, Experience with JUnit, AssertJ, Hamcrest, Bash/Shell scripting skills, Understanding of secure coding practices, Experience in Agile/Scrum environments, English level B2/C1 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Angular, TypeScript, PostgreSQL, Hibernate, JPA, Maven, Git, GitHub, CI/CD, Kubernetes, Docker, SQL, REST, JUnit, AssertJ, Hamcrest, Bash, Liquibase, Helm, Kafka, Python, Go, C, Grafana, Prometheus, Kibana, OWASP, JIRA 🏢 Description: We are looking for an experienced Fullstack Engineer who will be responsible for designing, developing, and maintaining modern enterprise applications in a cloud-native architecture. The person in this role will work on both backend and frontend solutions (Java + Angular). Our expectations 5+ years of professional backend development experience Strong expertise in Java 17+ and Spring ecosystem (Spring Boot, Spring Security) Strong knowledge of Angular and frontend development with TypeScript Experience with PostgreSQL, Hibernate/JPA Experience with cloud-native and microservices architecture Hands-on experience with Maven, Git, GitHub, and CI/CD pipelines Knowledge of Kubernetes, Docker Experience with SQL databases and REST API development Familiarity with JUnit, AssertJ, and Hamcrest Bash/Shell scripting skills Strong understanding of secure coding practices and scalable application design Experience working in Agile/Scrum environments Good English communication skills (B2/C1) Welcome Skills Experience with Kafka and event-driven architecture Knowledge of Python scripting Familiarity with Go (Golang) or C Experience with monitoring and logging tools such as Grafana, Prometheus, and Kibana Knowledge of OWASP Top 10 and application security best practices Experience with JIRA or similar project management tools Previous experience in enterprise-scale distributed systems Key tasks Develop and maintain scalable backend applications using Java 17+ and Spring Boot Design and optimize PostgreSQL databases and manage schema migrations with Liquibase Build and maintain modern frontend applications using Angular Develop secure, high-performance, and cloud-native solutions Contribute to CI/CD pipelines and deployment automation Support containerized deployments using Docker, Kubernetes, and Helm Collaborate with distributed engineering teams in Agile environments Participate in architecture discussions, code reviews, and technical mentoring Ensure application reliability, scalability, and maintainability across backend and frontend layers

🏢 Summary: Design and lead the implementation of high-performance, scalable and observable systems for global ad serving and tracking. The role focuses on building and optimizing HTTP/gRPC services and batch jobs in Java and Python, ensuring production reliability and measurable performance improvements. You will provide hands-on technical leadership while maintaining high engineering and code quality standards. 🗂️ Requirements: Strong knowledge of Java and Python, Experience building and maintaining HTTP and gRPC services, Experience with batch processing systems, Understanding of distributed systems and concurrency, Knowledge of Internet protocols (DNS, HTTP, cookies), Ability to design for high scalability and high availability, Experience monitoring and analyzing production systems, Ability to optimize system performance at scale, Experience deploying and maintaining production environments, Understanding of complex systems from hardware to algorithms 📃 Skills: Java, Python, HTTP, gRPC, DNS, Aerospike, Memcached, GCP, BigQuery, MinIO, Kafka, Clickhouse, PostgreSQL, Elasticsearch, Kubernetes, Prometheus, Jenkins, Graphite, Concurrency, DistributedSystems, Scalability, Availability, Monitoring, Performance 🏢 Description: You will: Design and lead implementation of system changes that deliver high performance, scalability and observability for displaying and tracking ads world wide. Develop tools and optimizations to drive measurable improvements in critical user performance metrics. Implement, test, deploy, monitor and maintain (in all aspects, including setting up environment, writing configuration code, monitor production) HTTP / gRPC services and batch jobs in Java and Python, ensuring adherence to the high engineering standards. Provide hands-on technical leadership: solving complex system challenges, participating in planning and scoping of projects, and ensuring the implementation of the highest coding standards through participation in code reviews. Desired experience: Excellent understanding of how complex IT systems work - from the hardware level, through software, to algorithms. Very good knowledge of fundamental Internet protocols and technologies (DNS, HTTP, cookies and others). Good knowledge of basic methods of creating concurrent programs and distributed systems (from thread level to geo-distributed clusters level). Practical ability to observe, monitor and analyse the operation of production systems (and draw valuable conclusions from it). The ability to critically analyze the solutions created in terms of performance (from estimating the theoretical performance of the designed systems to detecting and removing actual performance problems in production). General knowledge of issues (typical problems and methods of solving them) in the areas of 'high scalability' and 'high availability'. C1 level in English and Polish. Nice to have: Experience in the AdTech/Real Time Bidding space. Experience contributing to Real User Monitoring (RUM) systems. Selected technologies used: Java, Python Aerospike, Memcached Google Cloud Platform, BigQuery, MinIO Kafka, Clickhouse PostgreSQL Elasticsearch Kubernetes, Prometheus Jenkins, Graphite We Offer: Projects focused on extreme performance and high code quality – solid code reviews are our standard. Collaboration within an interdisciplinary, self-sufficient team (including DevOps, database experts, backend developers, product designers, and QA engineers). Hardware and software tailored to your preferences (e.g., MacBook, AI tool licenses). Flexible working conditions – no core hours, fully remote cooperation possible. Apply now! You don't need to tick every box to apply. If you are passionate about software engineering, send us your CV, and we'll review it.

🏢 Summary: Design and lead the implementation of highly scalable, high‑performance ad serving and tracking systems, building and optimizing HTTP/gRPC services and batch jobs in Java and Python. The role combines hands-on development with technical leadership, focusing on observability, reliability, and measurable performance improvements in distributed production environments. You will work on globally distributed systems handling large-scale traffic with strong engineering and code quality standards. 🗂️ Requirements: Experience designing and implementing high-performance, scalable distributed systems, Strong knowledge of Java and Python, Experience building and maintaining HTTP and gRPC services, Understanding of Internet protocols (DNS, HTTP, cookies), Knowledge of concurrency and distributed systems concepts, Ability to monitor, analyze and optimize production systems, Experience with high scalability and high availability architectures, Fluent English and Polish (C1) 📃 Skills: Java, Python, HTTP, gRPC, DNS, Aerospike, Memcached, GCP, BigQuery, MinIO, Kafka, Clickhouse, PostgreSQL, Elasticsearch, Kubernetes, Prometheus, Jenkins, Graphite 🏢 Description: You will: Design and lead implementation of system changes that deliver high performance, scalability and observability for displaying and tracking ads world wide. Develop tools and optimizations to drive measurable improvements in critical user performance metrics. Implement, test, deploy, monitor and maintain (in all aspects, including setting up environment, writing configuration code, monitor production) HTTP / gRPC services and batch jobs in Java and Python, ensuring adherence to the high engineering standards. Provide hands-on technical leadership: solving complex system challenges, participating in planning and scoping of projects, and ensuring the implementation of the highest coding standards through participation in code reviews. Desired experience: Excellent understanding of how complex IT systems work - from the hardware level, through software, to algorithms. Very good knowledge of fundamental Internet protocols and technologies (DNS, HTTP, cookies and others). Good knowledge of basic methods of creating concurrent programs and distributed systems (from thread level to geo-distributed clusters level). Practical ability to observe, monitor and analyse the operation of production systems (and draw valuable conclusions from it). The ability to critically analyze the solutions created in terms of performance (from estimating the theoretical performance of the designed systems to detecting and removing actual performance problems in production). General knowledge of issues (typical problems and methods of solving them) in the areas of 'high scalability' and 'high availability'. C1 level in English and Polish. Nice to have: Experience in the AdTech/Real Time Bidding space. Experience contributing to Real User Monitoring (RUM) systems. Selected technologies used: Java, Python Aerospike, Memcached Google Cloud Platform, BigQuery, MinIO Kafka, Clickhouse PostgreSQL Elasticsearch Kubernetes, Prometheus Jenkins, Graphite We Offer: Projects focused on extreme performance and high code quality – solid code reviews are our standard. Collaboration within an interdisciplinary, self-sufficient team (including DevOps, database experts, backend developers, product designers, and QA engineers). Hardware and software tailored to your preferences (e.g., MacBook, AI tool licenses). Flexible working conditions – no core hours, fully remote cooperation possible. Apply now! You don't need to tick every box to apply. If you are passionate about software engineering, send us your CV, and we'll review it.

🏢 Summary: Hands-on Observability Engineer role focused on building and automating enterprise-grade monitoring and observability solutions across AWS-based cloud and distributed systems. The position centers on developing infrastructure as code, CI/CD pipelines, and monitoring ecosystems to improve reliability, performance, and incident response. Approximately 90% of the role involves coding in Python and Terraform. 🗂️ Requirements: Strong hands-on experience with AWS, Strong Python development and scripting experience, Strong experience with Terraform, Experience building and maintaining CI/CD pipelines using Jenkins, Experience with Elasticsearch and ELK Stack, Experience with Linux systems, Shell scripting skills, Understanding of monitoring, logging, and alerting concepts, Experience working in Agile or DevOps environments 📃 Skills: AWS, Python, Terraform, Jenkins, Elasticsearch, ELK, Linux, Bash, CI/CD, Kubernetes, Grafana, Prometheus, Datadog, NewRelic, Snowflake, Databricks, dbt, Matillion 🏢 Description: Role Overview We are looking for a skilled and proactive Observability Engineer to implement, automate, and support enterprise-grade observability and monitoring solutions across cloud and application platforms. The ideal candidate should have strong AWS infrastructure knowledge, hands-on automation skills, and experience building reliable monitoring and alerting ecosystems for modern distributed applications. The role involves working closely with Platform Engineering, Data Engineering, and Application teams to develop observability solutions and bring operational visibility, reliability, incident detection, and platform performance. Main Responsibilities ·        Design, implement, and maintain observability solutions for cloud-native and distributed systems. ·        Build monitoring, logging, alerting, and dashboarding solutions across infrastructure and applications. ·        Develop automation scripts and tooling using Python. ·        Implement and maintain Infrastructure as Code (IaC) using Terraform. ·        Build and support CI/CD pipelines using Jenkins and Git-based workflows. ·        Configure and optimize monitoring for AWS services, Kubernetes workloads, APIs, databases, and applications. ·        Create actionable alerts and operational dashboards to improve incident response and system reliability. ·        Work with engineering teams to onboard applications into observability platforms. ·        Support troubleshooting, root cause analysis, and performance optimization initiatives. ·        Ensure observability standards, governance, and best practices are followed across projects. Key Requirements ·        Strong hands-on experience with Amazon Web Services (AWS). ·        Solid Python development/scripting experience. ·        Strong experience with Terraform. ·        Experience building and maintaining CI/CD pipelines using Jenkins. ·        Elasticsearch / ELK Stack experience and building queries. ·        Worked with Data Platforms monitoring is preferred. ·        Experience with Linux systems and shell scripting. ·        Understanding of monitoring, logging, and alerting concepts. ·        Experience working in Agile/DevOps environments. Nice to Have Skills Experience with any of the following is highly desirable: ·        Snowflake ·        Databricks ·        dbt ·        Matillion ·        Grafana ·        New Relic ·        Datadog ·        Prometheus ·        Elasticsearch / ELK Stack experience NOTES: We are looking for an Engineer who loves to build. This is a highly technical role—90% of the job is hands-on coding in python and terraform.

🏢 Summary: Role focused on designing, building, and maintaining B2B system integrations and APIs within a logistics environment. The position involves developing communication architecture, handling asynchronous messaging, and ensuring reliability and scalability of integrations. The engineer will work on data flows, error handling, and decoupling integrations from the core system. 🗂️ Requirements: Experience in building REST APIs, Knowledge of JSON and XML, Experience with B2B integrations, Knowledge of asynchronous communication (RabbitMQ, Kafka, Service Bus), Understanding of idempotency and integration reliability, Knowledge of authorization mechanisms (OAuth, API keys) 📃 Skills: REST, API, JSON, XML, B2B, RabbitMQ, Kafka, ServiceBus, OAuth, APIKeys, Idempotency, Asynchronous 🏢 Description: Organizacja z branży logistycznej, rozwijająca integracje systemowe z partnerami biznesowymi poszukuje osoby na stanowisko Integrations / API Engineer. Rola skupiona jest na budowie i utrzymaniu integracji B2B oraz rozwoju architektury komunikacyjnej. Zakres obowiązków Tworzenie i rozwój integracji system ↔ system Budowa i utrzymanie API oraz webhooków Praca z komunikacją asynchroniczną (kolejki / eventy) Obsługa błędów, retry, monitoring integracji Projektowanie przepływów danych Stopniowe odseparowanie integracji od core systemu Wymagania Doświadczenie w budowie API (REST) Znajomość JSON / XML Doświadczenie w integracjach B2B Znajomość komunikacji asynchronicznej (RabbitMQ / Kafka / Service Bus) Rozumienie idempotencji i niezawodności integracji Znajomość mechanizmów autoryzacji (OAuth, API keys) Znajomość języka angielskiego na poziomie minimum B2 Mile widziane Doświadczenie z middleware / ESB API Gateway Doświadczenie w branży logistycznej / transportowej Znajomość platform integracyjnych, również tych branżowych Oferujemy Udział w budowie architektury integracyjnej Pracę przy systemach o dużym znaczeniu biznesowym Stabilne środowisko i rozwój technologiczny