Senior Backend Engineer (Kotlin / GCP / Data Platform)

🏢 Summary: The role involves designing and developing scalable backend systems in a microservices architecture using Java or Kotlin and Spring. The engineer will influence technical decisions while building payment and subscription platforms with event-driven communication and cloud-based solutions. The position includes working with modern architectural patterns and ensuring high code quality through testing and reviews. 🗂️ Requirements: Strong experience with Java and/or Kotlin, Solid knowledge of Spring and Spring Boot, Hands-on experience with SQL and relational databases, Experience with PostgreSQL, Proven experience with microservices architecture, Experience with event-driven systems, Practical experience with JUnit, Mockito, Testcontainers, Experience with AWS or GCP, Understanding of DDD, CQRS, Hexagonal Architecture, Experience with payment or subscription systems 📃 Skills: Java, Kotlin, Spring, SpringBoot, SQL, PostgreSQL, Microservices, Kafka, JUnit, Mockito, Testcontainers, AWS, GCP, DDD, CQRS, HexagonalArchitecture 🏢 Description: Senior Backend Engineer (Java/Kotlin) We are looking for an experienced Backend Engineer to join a team building modern, scalable systems based on a microservices architecture. This role offers real influence over technical decisions, system architecture, and the quality of delivered solutions—particularly within payment and subscription platforms. Responsibilities Design, develop, and maintain backend systems using Java or Kotlin and the Spring Framework Build and evolve microservices following DDD , CQRS , and Hexagonal Architecture principles Implement event-driven communication , ideally using Apache Kafka Work with relational databases ( PostgreSQL or other SQL databases ) and optimize queries Write unit and integration tests using JUnit, Mockito, and Testcontainers Contribute to the design and development of cloud-based solutions ( AWS or GCP ) Participate in code reviews and drive high engineering standards Collaborate closely with product and engineering teams to deliver business-critical features Requirements Strong experience with Java and/or Kotlin Solid knowledge of Spring / Spring Boot Hands-on experience with SQL and relational databases (preferably PostgreSQL ) Proven background in microservices-based architectures Experience with event-driven systems (Kafka is a strong plus) Practical experience with backend testing (JUnit, Mockito, Testcontainers) Experience working with cloud platforms ( AWS or GCP ) Good understanding of Domain-Driven Design (DDD) , CQRS , and Hexagonal Architecture Must-have: experience with payment systems and/or subscription-based platforms Nice to Have Experience working with high-scale, high-availability systems Knowledge of security and transactional data handling Background in product-driven, Agile environments

🏢 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.

🏢 Summary: Senior Backend Developer role focused on building secure, scalable backend systems for a battlefield management platform using Kotlin and Java. The position emphasizes security-first development, cloud deployment on GCP, and ownership of architecture, CI/CD, and dependency vulnerability management. You will ensure high reliability, performance, and compliance with strict security standards. 🗂️ Requirements: 6+ years of backend development experience, Advanced Kotlin knowledge, Advanced Java knowledge, Strong experience with Spring Framework, Expertise in Spring Boot, Expertise in Spring Security, Experience implementing authentication and authorization, Strong understanding of OWASP principles, Experience with encryption and secure coding practices, Experience with OWASP Dependency-Check Maven Plugin, Hands-on experience with Google Cloud Platform, Experience with Kubernetes on GCP, Experience with Cloud Storage and Compute Engine, Experience designing and managing CICD pipelines, Proficiency with GitHub version control 📃 Skills: Kotlin, Java, Spring, SpringBoot, SpringSecurity, OWASP, Encryption, Maven, DependencyCheck, GCP, Kubernetes, CloudStorage, ComputeEngine, GitHub, GitHubActions, CICD, Docker, Prometheus, Grafana, ELK, APIs, Git 🏢 Description: About the Role: We are seeking an experienced Senior Backend Developer with a minimum of 6+ years of expertise in developing backend systems using Kotlin and Java . This role involves working on a battlefield management system , requiring strong security-focused development, robust architecture design, and seamless integration with cloud-based infrastructure. The position demands advanced English skills and a high level of independence , enabling you to drive the development process from concept to delivery . Military experience or prior involvement in the development of military systems is a plus but not mandatory. As a critical contributor, you will ensure the reliability, security, and performance of our systems, with particular emphasis on monitoring and mitigating vulnerabilities in system dependencies. Key Responsibilities: Backend Development: Build and maintain scalable backend systems and APIs using Kotlin/Java and Spring Framework . Security Implementation: Ensure all systems meet stringent security standards, including data protection, authentication, and authorization protocols. Dependency Management: Regularly check for and scan for vulnerabilities in dependencies using tools like the OWASP Dependency-Check Maven Plugin , and mitigate identified risks promptly. Cloud Integration: Deploy and optimize backend services on Google Cloud Platform (GCP) . DevOps Practices: Design and manage CI/CD pipelines. Optimize repository workflows using Github . Collaboration: Coordinate with cross-functional teams, including frontend developers and system architects, to deliver robust solutions. System Optimization: Continuously refine and enhance system performance for battlefield-level reliability. Documentation: Produce clear and detailed documentation for architecture, code, and security processes. Required Skills & Experience: Kotlin/Java & Spring Framework: Advanced knowledge of Kotlin/Java (6+ years preferred). Expertise in Spring Boot, Spring Security , and related modules. Security Expertise: Strong understanding of OWASP , encryption, and secure coding practices. Dependency Management: Familiarity with tools like OWASP Dependency-Check Maven Plugin to scan and mitigate dependency vulnerabilities. Cloud Expertise: Hands-on experience with Google Cloud Platform services like Kubernetes, Cloud Storage, and Compute Engine. DevOps & CI/CD: Proficiency in managing pipelines with tools like GitHub Actions or similar. Experience with GitHub for version control. Independent Work: Demonstrated ability to work autonomously and deliver high-quality results. Advanced English Skills: Excellent verbal and written communication skills. Preferred Qualifications: Previous experience developing systems or products with high security requirements. Certification in Google Cloud Platform technologies. Proficiency with containerization tools like Docker and orchestration frameworks such as Kubernetes . Familiarity with monitoring and logging tools (e.g., Prometheus , Grafana , or ELK Stack ). What We Offer: Competitive salary and comprehensive benefits. Opportunities for professional development and certification. The chance to work on impactful, high-stakes systems. Flexible working hours and [remote/hybrid] options.

🏢 Summary: Oferta dotyczy roli Senior Backend Engineer odpowiedzialnej za rozwój wysokowydajnej platformy inwestycyjnej i tradingowej obsługującej miliony użytkowników. Stanowisko obejmuje projektowanie architektury mikroserwisowej, rozwój backendu w Java i Go oraz optymalizację systemów działających pod dużym obciążeniem. Kandydat będzie współpracować z zespołami Product, DevOps i Engineering oraz uczestniczyć w decyzjach architektonicznych i mentoringu. 🗂️ Requirements: 8-12 lat doświadczenia w programowaniu backendowym, Bardzo dobra znajomość Java, Bardzo dobra znajomość Golang, Doświadczenie z JVM, Doświadczenie w projektowaniu systemów high scale i high throughput, Bardzo dobra znajomość architektury mikroserwisowej, Doświadczenie z REST API, Doświadczenie z integracjami systemowymi, Znajomość MongoDB, Znajomość PostgreSQL, Znajomość MySQL, Znajomość indeksowania, cachingu i optymalizacji wydajności, Znajomość Linux, Znajomość podstaw sieci i komunikacji między komponentami, Umiejętność analizy logów i troubleshootingu, Doświadczenie w branży finansowej lub fintech, Znajomość języka angielskiego na poziomie B2 📃 Skills: Java, Golang, JVM, REST, MongoDB, PostgreSQL, MySQL, Linux, Microservices, API, Caching, Networking, AWS, GCP, Azure, Oracle, CI/CD, DevOps 🏢 Description: Dołącz do jednej z najszybciej rozwijających się firm technologicznych z sektora finansowego, która tworzy nowoczesną platformę inwestycyjną i tradingową wykorzystywaną przez użytkowników na całym świecie. To organizacja stawiająca na wysoką jakość inżynierii, skalowalność oraz nowoczesną architekturę. Produkty obsługują miliony użytkowników, bardzo duży ruch i wymagają rozwiązań zapewniających wysoką dostępność oraz wydajność. Twoja rola Jako Senior Backend Engineer będziesz odpowiadać za projektowanie i rozwój kluczowych komponentów platformy oraz współtworzenie architektury systemów działających pod dużym obciążeniem. Do Twoich obowiązków będzie należeć: projektowanie, rozwój i utrzymanie backendu w Java i Go, tworzenie oraz rozwój architektury mikroserwisowej, projektowanie i rozwój wydajnych API oraz integracji z systemami wewnętrznymi i zewnętrznymi, optymalizacja wydajności aplikacji oraz rozwiązywanie problemów produkcyjnych, analiza logów, diagnostyka i troubleshooting złożonych problemów, współpraca z zespołami Product, DevOps oraz Engineering przy dostarczaniu nowych funkcjonalności, udział w code review oraz dbanie o wysoką jakość kodu, mentoring mniej doświadczonych programistów, udział w podejmowaniu decyzji architektonicznych i rozwoju platformy. Szukamy osoby, która posiada 8-12 lat doświadczenia w programowaniu backendowym, bardzo dobrą znajomość Java i Golang, praktyczne doświadczenie z JVM, doświadczenie w projektowaniu i rozwijaniu systemów o wysokiej dostępności oraz dużym ruchu (high scale, high throughput), bardzo dobrą znajomość architektury mikroserwisowej, doświadczenie z REST API oraz integracjami systemowymi, praktyczną znajomość baz danych (MongoDB, PostgreSQL, MySQL), w tym indeksowania, cachingu i optymalizacji wydajności, dobrą znajomość systemu Linux oraz podstaw działania sieci i komunikacji między komponentami aplikacji, umiejętność diagnozowania problemów, analizy logów oraz proponowania usprawnień technicznych, doświadczenie w branży finansowej lub fintech, znajomość języka angielskiego na poziomie min. B2. Mile widziane doświadczenie z rozwiązaniami DevOps oraz CI/CD, znajomość chmur publicznych (AWS, GCP lub Azure), doświadczenie z Oracle Cloud, znajomość wzorców architektonicznych, doświadczenie w obszarze tradingu, giełdy, kryptowalut lub High-Frequency Trading (HFT), wykształcenie techniczne, znajomość języka arabskiego.

🏢 Summary: Senior Backend Engineer role focused on building and scaling backend microservices for consumer-facing platforms and internal data privacy systems. The position involves developing distributed, event-driven systems supporting personalization, search, and regulatory compliance at scale. It requires strong experience in JVM technologies and cloud-native environments. 🗂️ Requirements: Strong commercial experience with JVM-based languages (Java or Scala), Experience with Kotlin or willingness to learn, Solid understanding of microservices architecture, Experience with event-driven systems, Experience with Docker and Kubernetes, Hands-on CI/CD experience in production, Experience with unit and integration testing, Experience with relational databases and SQL, Ability to design and maintain scalable distributed systems 📃 Skills: Java, Scala, Kotlin, JVM, Microservices, Docker, Kubernetes, CI/CD, SQL, PostgreSQL, AWS, Terraform, Elasticsearch, MongoDB, GraphQL, Go, Python 🏢 Description: We are looking for a Senior Backend Engineer to join a fast-growing product organization working on consumer-facing platforms and internal data systems. This role is suited for an experienced backend engineer who is comfortable building scalable, reliable services across different domains, from customer-facing journeys to data privacy and compliance infrastructure. About the Project: You will contribute to backend systems that power core customer experiences and internal platform initiatives. Depending on the team, this includes scaling a menu and personalization platform for high-traffic consumer applications, or building a centralized Data Privacy Service handling regulatory compliance (GDPR, CCPA) and Data Subject Requests at scale. Both streams require strong engineering fundamentals, a microservices mindset, and the ability to deliver in complex, distributed environments. Responsibilities: Design, develop, and maintain scalable backend microservices across consumer or data platform domains; Build systems supporting search, personalization, customer targeting, and engagement; Develop and operate services ensuring regulatory compliance and secure data handling (GDPR, CCPA); Work with event-driven architectures and distributed systems; Contribute to CI/CD pipelines, testing practices, and overall engineering quality; Collaborate with product and engineering teams to deliver reliable and performant solutions. Qualifications: Strong commercial experience with JVM-based languages (Java, Scala, or similar); Experience with Kotlin, or willingness to learn it on the project; Solid understanding of microservices architecture and event-driven systems; Experience with Docker and Kubernetes; Hands-on CI/CD experience in a production environment; Experience with unit and integration testing; Familiarity with relational databases (e.g. PostgreSQL) and SQL; AWS and Terraform experience is a plus; Experience with Elasticsearch, MongoDB, or GraphQL is a plus; Go or Python knowledge is a nice to have; Background in e-commerce, subscription platforms, or data privacy systems is a plus. Recruitment Process: Initial interview with our recruitment team; Interview with the hiring manager; Live Coding Assessment; Meeting with the Project Manager. Inuits Sp. z o.o. is registered in the National Register of Employment Agencies (KRAZ) under number 35420.

🏢 Summary: Senior Backend Engineer role focused on leading a large-scale migration from a monolithic database to multiple domain-specific data stores within Google Cloud Platform. The position involves designing and implementing complex data operations, including backfills, data mapping, and Change Data Capture using GCP Datastream and Dataflow. Strong expertise in data migration within cloud environments is essential. 🗂️ Requirements: 6+ years of professional backend engineering experience, Proven expertise in large-scale data migration, Strong experience with GCP data services, Hands-on experience with Datastream and Dataflow, Proficiency in Kotlin or Java, Experience designing and implementing data backfills and Change Data Capture processes 📃 Skills: Kotlin, Java, GCP, Datastream, Dataflow, SQL, ChangeDataCapture, DataMigration, Databases, Backfills 🏢 Description: ID63544 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to lead a critical migration from a monolithic database to multiple domain-specific data stores within Google Cloud Platform. You will design and implement data operations including backfills, data mapping, and Change Data Capture using GCP Datastream and Dataflow, working in Kotlin or Java. The role prioritizes demonstrated expertise in large-scale data migration over specific language fluency. What you will do Drive the migration from a single monolithic database to multiple domain-specific data stores within the Google Cloud Platform; Implement solutions for complex data operations, including one-time backfills, data mapping, filtering, and ongoing Change Data Capture to propagate data changes; Leverage expertise in GCP technologies, specifically Datastream and Dataflow. Must haves 6+ years of professional experience , ideally at a Senior or Lead level; Demonstrated deep expertise in data migration ; Extensive experience with Google Cloud Platform (GCP) data services, especially Datastream and Dataflow ; Proficiency in a modern programming language, such as Kotlin or Java ; Upper-intermediate English level. Nice to haves Experience with artificial intelligence (AI) to help optimize data workflows. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

🏢 Summary: Senior Software Engineer role focused on building and scaling cloud-native e-commerce solutions for the automotive repair industry. The position involves designing backend systems, developing microservices and APIs, and shaping system architecture in a modern AWS-based environment. You will contribute to high-load distributed systems while applying best engineering practices in a fully remote setup. 🗂️ Requirements: 5+ years of backend development experience, Strong proficiency in Java or Kotlin, Experience building and optimizing microservices, Experience developing APIs (REST, SOAP, gRPC), Experience with AWS cloud services, Experience with Kubernetes and Docker, Knowledge of TDD and CI/CD practices, Experience with high-load distributed systems, Experience with relational and NoSQL databases 📃 Skills: Java, Kotlin, Ktor, Spring, Gradle, gRPC, REST, SOAP, MariaDB, Redis, dbMate, Kubernetes, Docker, ArgoCD, Grafana, Prometheus, OpenTelemetry, ELK, GitHub, AWS, ECR, EKS, RDS, S3 🏢 Description: Team We are seeking a highly skilled and experienced Senior Software Engineer to join our dynamic team working on PartsTech solution. You will develop e-commerce solutions revolutionizing the automotive repair industry with cutting-edge, scalable software solutions. We’re on a mission to simplify and modernize how repair shops source and manage parts. About You You will play a key role in shaping our backend systems and technical direction, working with a modern tech stack in a collaborative, fast-paced environment. You will play a key role in developing cloud-native applications, mentoring engineers, and contributing to the development of scalable system architectures. The ideal candidate will have strong background in backend programming languages ( Java/Kotlin ), building and optimizing microservices, developing APIs (REST, SOAP, gRPC) , implementing best practices like TDD and CI/CD and utilizing Amazon Web Services (AWS) . We value strong problem-solving skills, experience with high-load distributed systems, and a proactive approach to software development. Tech stack Programming & frameworks: Kotlin, Ktor/Spring Boot, Gradle, gRPC Databases: MariaDB, dbMate, Redis Containers & orchestration: Kubernetes (K8s), Docker, ArgoCD Monitoring: Grafana, Prometheus, OpenTelemetry, ELK Stack Version Control: GitHub Actions Cloud Platforms: AWS (ECR, EKS, RDS, S3) If you have 5+ years of experience, enjoy solving complex problems, and want to contribute to innovative projects, we would love to connect! We offer the opportunity to work fully remotely.

🏢 Summary: Offer for a Senior Platform Engineer (Java/Kotlin) responsible for developing and maintaining a Java/Kotlin-based platform ecosystem in a large-scale Azure environment. The role combines backend development with platform engineering, focusing on Kubernetes, GitOps tools, and high-availability solutions. The position involves building automation, optimizing workloads, and supporting product teams with platform tools. 🗂️ Requirements: Very good knowledge of Java, Willingness to work with Kotlin, Experience in Platform Engineering, DevOps or Cloud Engineering, Practical experience with Kubernetes, Experience with GitOps tools: Istio, ArgoCD, Helm, Experience with Microsoft Azure cloud, Experience with Docker and containerization 📃 Skills: Java, Kotlin, Kubernetes, Azure, Docker, Istio, ArgoCD, Helm, GitOps, DevOps, Cloud, HA, Multiregion 🏢 Description: Nasz Klient to jedna z najbardziej rozpoznawalnych firm e-commerce w Polsce, rozwijająca zaawansowaną platformę technologiczną w środowisku Microsoft Azure oraz przy ogromnej skali ruchu. Projekt koncentruje się na budowie i rozwoju platformy wspierającej kluczowe produkty biznesowe – m.in . usługi płatnicze i ubezpieczeniowe. Obecnie poszukujemy osoby na stanowisko Senior Platform Engineer (Java/Kotlin) , która połączy kompetencje backendowe z obszaru Java/Kotlin (ok. 60%) z doświadczeniem platformowym, Kubernetes oraz Azure (ok. 40%). 📍 TRYB PRACY: Warszawa / model hybrydowy (elastyczny) 🛠️ CZYM BĘDZIESZ SIĘ ZAJMOWAĆ? Rozwojem i utrzymaniem narzędzi oraz bibliotek dla ekosystemu Java/Kotlin wspierających zespoły produktowe Optymalizacją workloadów działających w Kubernetes oraz integracją rozwiązań takich jak Istio, ArgoCD i Helm Projektowaniem i wdrażaniem rozwiązań wysokiej dostępności (HA) w środowiskach multiregionowych Prowadzeniem researchu technologicznego, przygotowywaniem PoC oraz rekomendacji architektonicznych Tworzeniem automatyzacji, integracji i narzędzi usprawniających pracę zespołów developerskich Współpracą z zespołami inżynierskimi przy rozwoju platformy technologicznej 🔎 CZEGO OD CIEBIE OCZEKUJEMY? Bardzo dobrej znajomości Java oraz gotowości do pracy również w Kotlinie Doświadczenia w obszarze Platform Engineering / DevOps / Cloud Engineering Praktycznej znajomości Kubernetes oraz ekosystemu GitOps (Istio, ArgoCD, Helm) Doświadczenia w pracy z chmurą Microsoft Azure Znajomości narzędzi konteneryzacyjnych, w szczególności Docker Samodzielności, proaktywności oraz podejścia nastawionego na rozwiązywanie problemów 🌟 DLACZEGO WARTO? Długoterminowa współpraca w modelu B2B Zaawansowany technologicznie projekt o dużej skali i realnym wpływie na architekturę platformy Możliwość prowadzenia PoC, researchu technologicznego i wdrażania własnych usprawnień Współpraca z doświadczonym zespołem inżynierskim Partnerska kultura pracy oparta o wymianę wiedzy, code review i wysoką jakość rozwiązań Elastyczny model pracy hybrydowej w Warszawie 📩 Dziękujemy za wszystkie zgłoszenia! Skontaktujemy się z wybranymi osobami. TQLO sp. z o.o. – wpis do rejestru agencji zatrudnienia (KRAZ) nr 33580.

🏢 Summary: Senior Kotlin Engineer role in an R&D e-commerce project focused on building an innovative AI-driven sales channel using generative AI and LLM-based agent systems. The position involves designing and developing scalable system components in Kotlin, making architectural decisions, and integrating AI solutions with large-scale existing systems. Fully remote work with responsibility for code quality, scalability, and production stability. 🗂️ Requirements: Experience as Software Engineer in complex projects, Very good knowledge of Kotlin, Experience with LLM integration and agent frameworks, Ability to design and implement system architecture, Experience with architectural decision-making and trade-off analysis, Experience with public cloud, Experience with Kubernetes 📃 Skills: Kotlin, LLM, AI, GCP, Kubernetes, Cloud, Microservices 🏢 Description: Dla naszego klienta z branży e-commerce poszukujemy osoby na stanowisko Senior Kotlin Engineer do zespołu realizującego zaawansowany projekt technologiczny oparty o rozwiązania AI. Projekt ma silny charakter R&D i koncentruje się na budowie nowego, innowacyjnego kanału sprzedaży z wykorzystaniem generatywnej sztucznej inteligencji. Zespół pracuje nad tworzeniem infrastruktury i rozwiązań agentowych opartych o LLM oraz ich integracją z istniejącymi systemami o dużej skali. Poszukujemy osoby, która chce mieć realny wpływ na kształt architektury, jakość rozwiązań oraz doświadczenie użytkownika końcowego. Model pracy: 100% praca zdalna (okazjonalne wizyty w biurze w Warszawie) Zakres obowiązków Projektowanie i rozwój złożonych funkcjonalności oraz komponentów systemowych w oparciu o Kotlin Współtworzenie rozwiązań wykorzystujących LLM oraz systemy agentowe (integracja, rozwój, optymalizacja) Podejmowanie decyzji architektonicznych oraz ocena kompromisów technicznych Odpowiedzialność za jakość kodu, stabilność, skalowalność i obserwowalność systemów Identyfikowanie i zarządzanie ryzykami technicznymi, zależnościami oraz długiem technicznym Współpraca z osobami z obszarów Engineering, Product Management oraz Design Ocena rozwiązań technicznych z perspektywy realnej wartości dla użytkownika Udział w utrzymaniu systemów produkcyjnych (dyżury on-call) Oczekiwania Doświadczenie w roli Software Engineer przy projektach o dużej złożoności Bardzo dobra znajomość Kotlin Podstawowe doświadczenie oraz silne zainteresowanie rozwiązaniami AI , w szczególności: integracją modeli językowych (LLM) oraz systemami i frameworkami agentowymi Umiejętność samodzielnego prowadzenia tematów od etapu projektu po wdrożenie Doświadczenie w podejmowaniu decyzji architektonicznych i analizie trade-offów Wysokie poczucie odpowiedzialności za dostarczane rozwiązania Doświadczenie z chmurą publiczną (preferowane GCP ) oraz Kubernetes Oferujemy Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu kariery w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami kariery , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne , zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne, premiery filmowe), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat. Pakiet benefitów zaplanowany od A do Z , czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą O 7N Ciągłe poszukiwanie projektów, trudne negocjacje stawek, brak wsparcia w rozwoju – brzmi znajomo? W 7N zyskujesz nie tylko stabilność kontraktów, ale też zaangażowanie osobistego opiekuna dbającego o Twój komfort zawodowy i stały dostęp do inicjatyw rozwojowych. Naszym celem jest zapewnienie Ci stabilnej i komfortowej współpracy, która przyczyni się do sukcesu Twojego jako eksperta IT oraz naszych klientów. Budujemy trwałe relacje, bazując na skandynawskich wartościach i 30-letnim doświadczeniu w tworzeniu rozwiązań IT dla ponad 200 organizacji.

🏢 Summary: The role focuses on designing and delivering high-complexity, scalable backend solutions in a large-scale distributed ecosystem, combining deep Kotlin expertise with AI-driven capabilities such as LLM integrations. The engineer will drive architectural decisions, ensure production-grade quality, and integrate agentic AI systems into real-world workflows. This position requires strong ownership, autonomy, and impact on systems operating at significant scale. 🗂️ Requirements: Proven experience as Senior Software Engineer in high-scale environments, Deep hands-on experience with Kotlin, Commercial experience with LLM integration, Experience with agentic systems or frameworks, Strong system design and architectural skills, Experience with scalability, performance, and reliability, Experience ensuring observability of distributed systems, Ability to manage technical debt and system risks, Experience integrating AI solutions into production systems 📃 Skills: Kotlin, LLM, AI, Agentic, Architecture, Scalability, Performance, Observability, DistributedSystems, GCP, Kubernetes 🏢 Description: Senior Software Engineer (Kotlin / AI Integration / Large-Scale Systems) We are looking for a highly experienced Senior Software Engineer to join a large-scale product ecosystem operating in a complex, distributed environment. This role is designed for a strong Individual Contributor who thrives on solving high-complexity problems, influencing architecture, and delivering scalable, production-grade solutions. You will work at the intersection of modern backend engineering and AI-driven capabilities, helping evolve systems that operate at significant scale. The ideal candidate combines deep Kotlin expertise with curiosity and practical interest in AI-powered solutions — particularly LLM integrations and agentic frameworks — and understands how to translate technical decisions into real user impact. What You’ll Be Responsible For Designing and delivering high-complexity features and system components Driving architectural decisions and evaluating technical trade-offs Ensuring quality, scalability, reliability, and observability of delivered solutions Taking end-to-end ownership of implementation, from concept to production Identifying and managing technical risks, dependencies, and technical debt Integrating AI-driven capabilities (LLMs, agentic systems) into production workflows Collaborating closely with Engineers, Product Managers, and Designers Evaluating technical decisions based on measurable user impact Operating with high autonomy and accountability in a mature engineering environment Must Have Proven experience as a Senior Software Engineer delivering complex, high-scale solutions Deep hands-on experience with Kotlin Basic commercial experience and strong interest in AI-driven solutions , especially LLM integration and Agentic Systems/Frameworks Strong architectural mindset and ability to drive system design Experience managing scalability, performance, stability, and observability Ability to identify technical debt and proactively address system risks Strong collaboration and communication skills High level of ownership and autonomy Nice to Have Experience with Cloud environments (GCP preferred) and Kubernetes Experience working with large-scale distributed systems Cross-team collaboration in complex organizational structures Providing technical consultancy and knowledge sharing within teams Advising on engineering standards and continuous optimization of development practices