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Backend Engineer

5G/6G C Developer

Innovative Solutions

Удалённо

Откликнуться на сайте работодателя

Описание вакансии

Product Development

  • Piaseczno, Poland
  • Fully Remote

5G/6G C Developer

Build the future of ultra-resilient connectivity!

We usually respond within three days

Role scope
Join our L2/L3 team to develop high-performance system software and algorithmic solutions that power 5G network infrastructure. You'll focus on data processing engines, performance optimization, and system-level components using C99, working on computational challenges rather than protocol specifications.

Responsibilities

  • Develop and optimize high-performance data processing algorithms and engines using C99.
  • Implement system-level software components for network data flows, buffering, and memory management.
  • Design and optimize data structures, algorithms, and computational modules for 5G network processing.
  • Collaborate with L2/L3 team members on system architecture and performance optimization challenges.
  • Profile and tune system performance, memory usage, and computational efficiency of network software.
  • Implement multi-threaded system components and concurrent data processing pipelines.
  • Debug complex system-level issues and optimize algorithmic bottlenecks in network processing.

Requirements

  • 3+ years of professional C development experience with strong focus on C99 standard and system programming.
  • Solid understanding of algorithms, data structures, and computational complexity optimization.
  • Experience with system-level programming, multi-threading, and high-performance computing.
  • Knowledge of memory management, performance profiling, and system optimization techniques.
  • Strong analytical and algorithmic problem-solving skills for complex computational challenges.
  • Familiarity with Linux systems programming, debugging tools, and performance analysis.
  • Very good English (spoken/written).

Additional Advantages

  • Experience with high-performance computing, parallel processing, or real-time data processing systems.
  • Knowledge of network data processing, packet processing, or telecommunications system software.
  • Familiarity with performance optimization tools, profilers, and system monitoring.
  • Understanding of concurrent programming patterns and lock-free data structures.
  • Experience with system software development in telecommunications or networking domains.
  • Background in computer science, algorithms, or high-performance system development.

How we work

Loyalty & team spirit —
we have each other's backs, always.

Sincerity & openness —
we say what we think, even when it's uncomfortable.

Courage & ambition —
we take positions, defend them, and aim high.

"How can I help?" attitude

we help because we want to, not because we have to.

Out of the comfort zone —
we build things that haven't been built before. That's the point.

Zero-latency —
we act. No waiting, no procrastinating, no excuses.

What We Offer

  • Competitive salary package that grows with your experience and impact
  • Access to world-class telecommunications knowledge base and comprehensive training resources
  • Time for training, conferences, and self-development with ample opportunities for personal growth
  • Opportunities for growth and advancement based on merit
  • Ownership of cutting-edge, patent-worthy technology that shapes global connectivity
  • Exposure to the latest technology and tools that push the boundaries of innovation
  • Diverse, friendly, and talented international team of engineers and domain experts
  • Collaborative, low-ego environment that rewards initiative and values your input
  • Flexible working hours that promote healthy work-life balance
  • Regular integration events that foster team bonding and camaraderie

About IS-Wireless
IS-Wireless is a top European
deep-tech innovator
, awarded the
EIC Seal of Excellence
and holder of 10+ patents. As a NATO DIANA 2025 innovator, we operate as a dual-use company, building
ultra-resilient, secure and resource-efficient 5G networks
for both industrial and tactical applications.

Our patented
Liquid RAN technology
represents a new generation of open, disaggregated radio access designed for exceptional reliability, flexibility, and resource efficiency. It enables rapid restoration and redeployment of base stations, even in volatile or degraded environments.

We value
creative problem-solvers, unconventional thinkers and deep domain experts
who thrive in demanding scenarios.

Department Product Development Locations Piaseczno, Poland Remote status Fully Remote

Current job openings

  • C++ Software Developer Product Development
  • Piaseczno, Poland
  • Fully Remote

More jobs

Piaseczno, Poland

Gain expert knowledge and challenge yourself

  • Opportunity

A great opportunity to develop your skills in building networks in the Open RAN model

  • Knowledge

Get access to the top-class telecommunications knowledge base and training

  • Challenge

Interesting and challenging work within an international environment of talented engineers

About IS-Wireless
IS-Wireless is a top European Deep Tech innovator, awarded the EIC Seal of Excellence and holding a portfolio of 10+ patents. As a proud NATO DIANA 2025 innovator, we operate as a Dual-Use company, developing ultra-resilient, secure, and resource-efficient 5G networks for both industrial and tactical applications.

Our patented Liquid RAN technology represents a new generation of open, disaggregated radio access designed for exceptional reliability, flexibility, and resource efficiency. It enables rapid restoration and redeployment of base stations, even in volatile or degraded environments.

Our solutions are built for performance under pressure, supporting ultra-resilient mobile networks that withstand disruption. With a dual-use approach, we bridge defense innovation and commercial applications to ensure secure, high-performing connectivity where it matters most.

Our team stands out for creative problem-solving, unconventional thinking, and deep expertise. We bring together experience from hardware and software vendors, telecom operators, and R&D institutions, uniting skilled developers, engineers, and business leaders.

Founded in 2017

Co-workers 45+

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Product Development

  • Piaseczno, Poland
  • Fully Remote

5G/6G C Developer

Build the future of ultra-resilient connectivity!

Loading application form

Role scope
Join our L2/L3 team to develop high-performance system software and algorithmic solutions that power 5G network infrastructure. You'll focus on data processing engines, performance optimization, and system-level components using C99, working on computational challenges rather than protocol specifications.

Responsibilities

  • Develop and optimize high-performance data processing algorithms and engines using C99.
  • Implement system-level software components for network data flows, buffering, and memory management.
  • Design and optimize data structures, algorithms, and computational modules for 5G network processing.
  • Collaborate with L2/L3 team members on system architecture and performance optimization challenges.
  • Profile and tune system performance, memory usage, and computational efficiency of network software.
  • Implement multi-threaded system components and concurrent data processing pipelines.
  • Debug complex system-level issues and optimize algorithmic bottlenecks in network processing.

Requirements

  • 3+ years of professional C development experience with strong focus on C99 standard and system programming.
  • Solid understanding of algorithms, data structures, and computational complexity optimization.
  • Experience with system-level programming, multi-threading, and high-performance computing.
  • Knowledge of memory management, performance profiling, and system optimization techniques.
  • Strong analytical and algorithmic problem-solving skills for complex computational challenges.
  • Familiarity with Linux systems programming, debugging tools, and performance analysis.
  • Very good English (spoken/written).

Additional Advantages

  • Experience with high-performance computing, parallel processing, or real-time data processing systems.
  • Knowledge of network data processing, packet processing, or telecommunications system software.
  • Familiarity with performance optimization tools, profilers, and system monitoring.
  • Understanding of concurrent programming patterns and lock-free data structures.
  • Experience with system software development in telecommunications or networking domains.
  • Background in computer science, algorithms, or high-performance system development.

How we work

Loyalty & team spirit —
we have each other's backs, always.

Sincerity & openness —
we say what we think, even when it's uncomfortable.

Courage & ambition —
we take positions, defend them, and aim high.

"How can I help?" attitude

we help because we want to, not because we have to.

Out of the comfort zone —
we build things that haven't been built before. That's the point.

Zero-latency —
we act. No waiting, no procrastinating, no excuses.

What We Offer

  • Competitive salary package that grows with your experience and impact
  • Access to world-class telecommunications knowledge base and comprehensive training resources
  • Time for training, conferences, and self-development with ample opportunities for personal growth
  • Opportunities for growth and advancement based on merit
  • Ownership of cutting-edge, patent-worthy technology that shapes global connectivity
  • Exposure to the latest technology and tools that push the boundaries of innovation
  • Diverse, friendly, and talented international team of engineers and domain experts
  • Collaborative, low-ego environment that rewards initiative and values your input
  • Flexible working hours that promote healthy work-life balance
  • Regular integration events that foster team bonding and camaraderie

About IS-Wireless
IS-Wireless is a top European
deep-tech innovator
, awarded the
EIC Seal of Excellence
and holder of 10+ patents. As a NATO DIANA 2025 innovator, we operate as a dual-use company, building
ultra-resilient, secure and resource-efficient 5G networks
for both industrial and tactical applications.

Our patented
Liquid RAN technology
represents a new generation of open, disaggregated radio access designed for exceptional reliability, flexibility, and resource efficiency. It enables rapid restoration and redeployment of base stations, even in volatile or degraded environments.

We value
creative problem-solvers, unconventional thinkers and deep domain experts
who thrive in demanding scenarios.

A great opportunity to develop your skills in building networks in the Open RAN modelGet access to the top-class telecommunications knowledge base and trainingInteresting and challenging work within an international environment of talented engineers

IS-Wireless is a top European Deep Tech innovator, awarded the EIC Seal of Excellence and holding a portfolio of 10+ patents. As a proud NATO DIANA 2025 innovator, we operate as a Dual-Use company, developing ultra-resilient, secure, and resource-efficient 5G networks for both industrial and tactical applications.

Our patented Liquid RAN technology represents a new generation of open, disaggregated radio access designed for exceptional reliability, flexibility, and resource efficiency. It enables rapid restoration and redeployment of base stations, even in volatile or degraded environments.

Our solutions are built for performance under pressure, supporting ultra-resilient mobile networks that withstand disruption. With a dual-use approach, we bridge defense innovation and commercial applications to ensure secure, high-performing connectivity where it matters most.

Our team stands out for creative problem-solving, unconventional thinking, and deep expertise. We bring together experience from hardware and software vendors, telecom operators, and R&D institutions, uniting skilled developers, engineers, and business leaders.

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

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Резюме под эту вакансию — и билет в розыгрыш

Мы разбираем объявление до настоящих требований и переписываем ваше резюме под него — вопросами, а не выдумкой: ни одна строка не появится без вашего подтверждения. Войдите, чтобы получить это первым, — и попасть в розыгрыш.

  • Резюме под конкретную вакансию, а не «универсальное»
  • Ответы хранятся: правится любой, а не весь разговор заново
  • Всё в аккаунте — открывается с любого устройства

Разыгрываем

Скидка на сопровождение

Победителей выбираем случайно среди заявок с подтверждённой почтой. Дата розыгрыша и полные правила — на странице розыгрыша.

Правила розыгрыша

Backend Engineer

Senior Java Backend Developer - Remote Work | REF#290295

BairesDev

Удалённоfulltimesenior

Откликнуться на сайте работодателя

Описание вакансии

At BairesDev®, we've been leading the way in technology projects for over 15 years. We deliver cutting-edge solutions to giants like Google and the most innovative startups in Silicon Valley.

Our diverse 4,000+ team, composed of the world's Top 1% of tech talent, works remotely on roles that drive significant impact worldwide.

When you apply for this position, you're taking the first step in a process that goes beyond the ordinary. We aim to align your passions and skills with our vacancies, setting you on a path to exceptional career development and success.

We’re looking for a Senior Java Backend Developer with strong Java skills and a solid background in distributed data processing. You’ve worked on systems where data moves reliably at scale — whether through streaming pipelines, batch jobs, or both — and you understand the JVM well enough to reason about performance when it matters. You’ll be contributing to open source data platform technology that leading enterprises worldwide depend on to process and manage their data.

What You’ll Do

  • Design and develop distributed data processing components in Java, with a focus on throughput, reliability, and correctness.
  • Build and maintain stream and batch processing pipelines that handle large-scale data workloads in production.
  • Apply JVM performance knowledge to optimize data processing systems under real production conditions.
  • Collaborate with platform and data engineering teams to deliver scalable, well-tested solutions.
  • Participate in code reviews and contribute to engineering standards across the data platform.
  • Investigate and resolve performance bottlenecks and reliability issues in distributed processing components.

What We Are Looking For

  • 5+ years of experience in IT roles.
  • 3+ years of experience with Java as a primary programming language.
  • Hands-on experience with distributed data processing systems.
  • Background in stream or batch processing infrastructure.
  • Solid understanding of JVM performance fundamentals.
  • Open source contribution experience is a plus.
  • Advanced proficiency in English.

How we do make your work (and your life) easier:

  • Remote Work.
  • Excellent compensation in USD or your local currency if preferred
  • Hardware and software setup for you to work from home.
  • Flexible hours: create your own schedule.
  • Paid parental leaves, vacations, and national holidays.
  • Innovative and multicultural work environment: collaborate and learn from the global Top 1% of talent.
  • Supportive environment with mentorship, promotions, skill development, and diverse growth opportunities.

Join a global team where your unique talents can truly thrive and make a significant impact!

Apply now!

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

Backend Engineer

Mid+ AI / Backend Engineer

Crodu

Удалённоfulltime

Откликнуться на сайте работодателя

Описание вакансии

⏳ Czas projektu: długoterminowy 👈

🌴 Forma: fulltime, zdalnie 👈

⏰ Start: ASAP 👈

Cześć! 👋

Dla dynamicznie rozwijającego się startupu tworzącego nowoczesną platformę B2B AI opartą na autonomicznych agentach poszukujemy doświadczonej osoby na stanowisko
Mid+
AI / Backend Engineer
.

Platforma dostarczana przez klienta eliminuje żmudną analitykę w zespołach przedsiębiorstw dzięki elastycznej architekturze, rozwiązaniom agentycznym i zaawansowanym przepływom pracy. W tej roli dołączysz do zespołu programistycznego, gdzie będziesz mieć realny wpływ na architekturę systemów trafiających bezpośrednio na produkcję,tworząc i skalując infrastrukturę backendową oraz systemy sztucznej inteligencji.

Szukamy osoby, która nie jest jeszcze seniorem, ale niewiele jej brakuje do tego poziomu. Klientowi zależy, żeby podjąć współpracę z osobą samodzielną, która dostaje dobrze opisane zadanie i dowozi je bez prowadzenia za rękę.

Codzienne zadania
📍 Tworzenie i rozwój skalowalnych usług backendowych (Python, FastAPI) napędzających platformę AI.

📍 Budowa i optymalizacja potoków RAG, systemów agentów AI oraz orkiestracja modeli LLM na produkcji.

📍 Wsparcie w tworzeniu infrastruktury chmurowej (AWS / Azure), w tym izolacją wieloabonencką (multi-tenant) i funkcjami serverless.

📍 Tworzenie elastycznego ekosystemu integracji sterowanego przez API oraz zewnętrzne konektory.

📍 Prowadzenie przeglądów kodu (code reviews), dbanie o standardy testowania i mentoring młodszych inżynierów.

📍 Dbanie o bezpieczeństwo systemu (JWT, OAuth2, RBAC, ochrona przed prompt injection).

Wymagania
⚡️ 3-5 lat doświadczenia komercyjnego w backend engineeringu z wykorzystaniem Pythona.

⚡️ Bardzo dobra znajomość frameworka FastAPI (async, Pydantic, dependency injection).

⚡️ Doświadczenie w pracy z PostgreSQL (projektowanie schematów, optymalizacja zapytań, migracje z Alembic).

⚡️ Doświadczenie z systemami AI (LLM, RAG) -> tool calling, function calling, multi-step reasoning, MCP / Model Context Protocol

⚡️ Wiedza z zakresu chmury: AWS (Lambda, S3, ECS, API Gateway) i/lub Azure.

⚡️ Znajomość Docker, Kubernetes, CI/CD (GitHub Actions, GitLab CI) oraz IaC (Terraform / AWS CDK).

⚡️ Doświadczenie produkcyjne w integracji API modeli LLM (OpenAI, Anthropic Claude, Google Gemini).

⚡️ Bardzo dobra znajomość języka angielskiego w mowie i piśmie.

**Mile widziane

⚡️**
Znajomość TypeScriptu (zaawansowany system typów: generics, utility types, conditional types).

⚡️ Praktyczna znajomość Celery oraz asynchronicznego przetwarzania zadań (Redis / RabbitMQ).

⚡️ Doświadczenie z GraphRAG oraz grafowymi bazami danych (Neo4j).

⚡️ Praktyka w serwowaniu modeli LLM on-premise (vLLM, TGI, TensorRT-LLM) oraz znajomość technik fine-tuningu (LoRA/QLoRA).

⚡️ Znajomość Pulumi, gRPC lub GraphQL.

Jak aplikować?

👉 Wyślij nam swoje zgłoszenie w formularzu!

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

Backend Engineer

Especialista Integración y APIS (IBM App Connect Enterprise (ACE))

Towa Software

Удалённоfulltime

Откликнуться на сайте работодателя

Описание вакансии

ESPECIALISTA SENIOR DE INTEGRACIÓN Y APIs
🏢
Modalidad:
Home Office

Sobre la posición
Buscamos un
Especialista Senior de Integración y APIs
para fortalecer nuestro equipo de integración empresarial.

La persona será responsable de diseñar, desarrollar y mantener soluciones de integración entre diferentes sistemas y plataformas, utilizando
IBM App Connect Enterprise (ACE)
como una de las principales tecnologías del entorno.

Buscamos un perfil técnico con experiencia comprobable en
integración empresarial, APIs, microservicios y plataformas de middleware
, capaz de participar en el diseño de soluciones robustas, seguras y escalables.

Responsabilidades

  • Diseñar, desarrollar y mantener soluciones de integración utilizando IBM App Connect Enterprise (ACE).
  • Desarrollar e implementar APIs y servicios empresariales para la integración de aplicaciones y sistemas.

Requisitos indispensables

  • Experiencia comprobable con IBM App Connect Enterprise (ACE).
  • Experiencia sólida en integración de sistemas empresariales.
  • Experiencia en diseño y desarrollo de APIs REST y/o SOAP.
  • Experiencia con microservicios y servicios empresariales.

Será un plus si cuentas con

  • Experiencia con AWS o Google Cloud Platform (GCP).
  • Experiencia con API Management / API Gateway.
  • Conocimientos de API Governance.

💰 Oferta
Sueldo competitivo acorde con experiencia y conocimientos técnicos.
Esquema nominal con prestaciones de ley y beneficios internos.
¿Te interesa?
Postúlate enviando tu CV para participar en nuestro proceso de selección. Recuerda que es importante que se mencione en tu CV la experiencia en los requisitos al menos indispensables.

  • Se podría requerir documentación personal en alguna parte del proceso de reclutamiento y selección-

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

Backend Engineer

Concepteur Développeur Sénior - Tech Lead Java/Angular (H/F/N)

OPEN

Удалённоother

Откликнуться на сайте работодателя

Описание вакансии

Contexte de la mission
Nous sommes une entreprise incontournable sur les marchés IDF, avec une forte présence dans les secteurs Public, Bancaire, Industrie, Télécoms, Transport et Énergie.

L’équipe parisienne Application Services compte près de 1500 collaborateurs. Nous accompagnons nos clients, de bout en bout, sur leurs projets applicatifs, notamment sur les stacks technologiques DevOps, Data, Cloud et Modern Workplace.

Venez renforcer nos équipes !

Nous recrutons un Concepteur Développeur Sénior / Tech Lead JAVA Confirmé H/F avec idéalement une expérience en Banque ou en Assurance, qui nous apportera son bagage technique et sa vision nouvelle.

Vous aurez la possibilité d'intervenir sur des missions en régie dans un contexte Agile.

Ce qui vous attend

  • Concevoir et implémenter des modules à développer dans le respect de l’architecture posée
  • Réaliser ou participer à la conception technique générale du système
  • Développer, suivre et contrôler la fiabilité des développements
  • Être le relais des Responsables Techniques dans la montée en compétences des développeurs et force de proposition sur les choix de technologie et d’outils sur les projets
  • Remonter les alertes au plus tôt
  • Mettre en production, industrialiser et intégrer
  • Assurer la maintenance et le support technique
  • Participer à la réalisation de différentes études (analyse d’impact, études préalables, d’opportunité, de faisabilité techniques) et estimer les charges de travail pour les développements (chiffrages notamment)
  • Être référent technique sur tout ou partie de l’application en fonction de l’expérience acquise

Vous êtes fait(e) pour ce poste si

  • Vous justifiez d'une expérience de 6 ans minimum sur la fonction de Concepteur Développeur Sénior / Tech Lead JAVA, idéalement dans le domaine de la Banque de détail ou de l’Assurance
  • Vous avez déjà travaillé dans un environnement Agile ainsi que sur ses outils (JAVA / ANGULAR / REACT / Hibernate / Spring / SpringMVC / Web API / JavaScript / HTML / CSS / PostGreSQL / SQL Server)
  • La maîtrise de l’anglais et la pratique de l’Agilité seront de véritables atouts

Votre envie, votre bonne humeur, votre capacité relationnelle et votre rigueur sont à la hauteur de votre dynamisme. Vous souhaitez vous projeter dans une nouvelle aventure, au sein d'une structure forte, et intégrer une équipe d'architectes et de référents techniques.

Au-delà de la mission, vous pourrez

  • Intervenir sur différentes missions dans des secteurs d'activités variés (Énergie, Transport, Télécoms, Médias, Automobile)
  • Rejoindre nos Practices Technologiques, notre programme interne de communautés d'experts sur des technologies émergentes (Modern Workplace, Data, Cloud, DevOps...)
  • Continuer à grandir techniquement via un suivi de carrière personnalisé, un accès aux formations et aux certifications (Azure, AWS, etc.)

Poste en CDI à pourvoir dès que possible

Notre process de recrutement
Un bref échange téléphonique

Une première rencontre avec un chargé de recrutement et un ressources manager pour parler de vous, de vos aspirations professionnelles et vous présenter Open

Un deuxième échange avec un interlocuteur de l’équipe technique

Vous serez accompagné(e) par le chargé de recrutement qui vous fera un retour complet et franc tout au long du process.

Après vous avoir souhaité la bienvenue, vous bénéficierez d’un parcours d’intégration sur mesure.

Pourquoi nous rejoindre ?
Ce sont nos Ambassadeurs qui en parlent le mieux, découvrez leurs témoignages sans filtre :

https://www.welcometothejungle.com/fr/companies/open

Code REC : MEL25329

Et vous, qu’attendez-vous pour être Open ?

#RecrutezNous #AllezVientOnEstBien

Qu’attendez-vous pour être Open ?

Это сохранённая копия объявления, опубликованного в другом месте. Вакансии снимают без предупреждения — перед откликом проверьте сайт работодателя. mentors.coach не является нанимающей стороной.

Ещё 1 162 вакансии по этой категории в этой стране

5G/6G C DeveloperInnovative Solutions

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