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Backend Engineer

Backend Engineer

Senior AI Platform Engineer

N-iX

Warsaw

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Описание вакансии

N-iX
is a global software development company founded in 2002, connecting over 2,400+ tech professionals across 40+ countries. We deliver innovative technology solutions in cloud computing, data analytics, AI, embedded software,IoT, and more to global industry leaders and Fortune 500 companies. Join us to create technology that drives real change for businesses and people across the world.

Our client
is a fast-growing European fintech company in the business spend management space — corporate cards and related financial products — serving SME and mid-sized business customers across the EU and UK, in a regulated environment with GDPR compliance obligations. Engineering is organized into cross-functional squads, with platform/enabling teams providing shared tooling horizontally. The client already runs an AI-native engineering practice: Claude Code and GitHub Copilot are used daily, supported by a growing library of shared, versioned Skills embedded in key repositories, enabling an end-to-end flow from ticket to implementation, testing and PR in several codebases. AI tool/connector rollout follows an approved-list and pilot process. The client is AWS-first overall; for data platform and analytics workloads it also runs GCP, with BigQuery as the primary data warehouse. Day-to-day coordination is Slack-first, with Linear for ticket tracking, GitHub for code/PR review, and Notion as the knowledge base.

The client is also building out its AI platform and agentic capabilities: it recently launched an MCP surface in closed beta, giving external AI assistants a structured way to connect and perform real workflows behind guardrails, and treats agent reliability as a system property (tool contracts, approval/consent gates for write actions, evaluation harnesses).

We're looking for
a Senior AI Platform Enginee
r to design, build and operate the shared GenAI infrastructure that product teams rely on.

Key Responsibilities:

  • Design, build and operate shared GenAI infrastructure: LLM routing, vector search and RAG infrastructure, MCP gateway, and AI observability/evaluation tooling.
  • Apply strong distributed-systems fundamentals: async workflows, idempotency, failure design.
  • Work hands-on with LLM APIs in production.
  • Apply an AI-security mindset: prompt injection defenses, PII-in-logs handling, credential handling.
  • Apply real engineering rigor to the Context Development Lifecycle (CDLC): generate, evaluate, distribute and observe the context that powers AI agents.
  • Multiply the output and quality of the squad you join, and share patterns/practice beyond your immediate team so adoption compounds across the organisation.
  • Embed directly into a client squad as a hands-on Individual Contributor (not a coaching/managerial role).

Must-Have Skills:

  • Kotlin or Python as primary proficiency, with comfort contributing to both.
  • Experience designing/building/operating shared GenAI infrastructure: LLM routing; vector search and RAG infrastructure; MCP gateway; AI observability and evaluation tooling.
  • Strong distributed-systems fundamentals: async workflows, idempotency, failure design.
  • Hands-on production experience with LLM APIs.
  • AI-security mindset: prompt injection, PII in logs, credential handling.
  • Agent & harness engineering fluency, with concrete evidence of building/operating this kind of tooling, not just using it.
  • Comfortable with the client's current daily tools: Claude Code and GitHub Copilot.

Nice-to-Have Skills:

  • Specific cloud depth (AWS and/or GCP), Grafana, or named LLM API vendors. The RFP describes these capabilities generically rather than naming specific tools for this role — listed here as plausible, not confirmed.

We offer*:

  • Flexible working format - remote, office-based or flexible
  • A competitive salary and good compensation package
  • Personalized career growth
  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
  • Active tech communities with regular knowledge sharing
  • Education reimbursement
  • Memorable anniversary presents
  • Corporate events and team buildings
  • Other location-specific benefits
  • not applicable for freelancers

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Backend Engineer

Lead C# Developer

Veeam Software

Warsaw

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Описание вакансии

Veeam is the Data and AI Trust Company, specializing in helping organizations ensure their data and AI are fully understood, secured, and resilient to enable the acceleration of safe AI at scale. As the market leader in both data resilience and data security posture management, Veeam is built for the convergence of identity, data, security, and AI risk. Headquartered in Seattle with offices in more than 30 countries, Veeam protects over 550,000 customers worldwide, who trust Veeam to keep their businesses running. Join us as we go fearlessly forward together, growing, learning, and making a real impact for some of the world’s biggest brands.

We are looking for a
C# Technical Lead
for Veeam Backup for Office 365.

Your Tasks Will Include

  • Supervise the team’s day-to-day operations
  • Analyze and establish business requirements in collaboration with the product management team
  • Develop new product features, currently focusing on backend
  • Estimate the efforts required for feature implementation, including costs and capacity
  • Develop your hard and soft skills together with the team
  • Make technical decisions
  • Lead and involve others into code reviews
  • Ensure work atmosphere inside of the team, team members learning and motivation
  • Communicate with the project’s stakeholders
  • Establish and review communication and processes inside of the team: prepare and perform regular meetings, planning, daily, retro

Technologies We Work With

  • Latest C# (and a bit of C++, C++\CLI), REST, PowerShell
  • .NET 10
  • Visual Studio, Rider
  • Azure DevOps, Git, Jenkins, TeamCity
  • Azure, Office 365, Amazon, Google
  • Exchange, SharePoint, Active Directory, PostgreSQL

What We Expect From You

  • 5+ years of software development in commercial projects
  • Strong knowledge of C#, .Net, Win API, data structures, and algorithms
  • Experience as a team leader in a group of 4-5 developers
  • Strong organizational and leadership skills, self-control and responsibility
  • Result-oriented, proactive approach
  • Strong problem-solving skills
  • Technical mindset with great attention to details
  • Good communication skills
  • English proficiency level sufficient to communicate with international teams

What You’ll Get

  • 26 paid days off annually, plus 4 extra global VeeaMe Days for self-care and 24 paid volunteer hours annually through Veeam Cares
  • Paid parental, maternity, and paternity leave
  • Fully covered family medical plan, dental, rehab, and vaccinations
  • Life, critical illness, and disability insurance
  • Employer pension contribution via PPK
  • Monthly Edenred allowance of 450 PLN for meals
  • MultiSport card fully covered by Veeam, giving access to sports facilities nationwide
  • Up to 12 free therapy sessions annually, plus legal and financial advice
  • Opportunities to learn and grow through on-demand libraries (LinkedIn Learning, O’Reilly), mentoring, workshops and learning events like our annual Global Day of Learning

Please note:
This role requires office presence, the offices are located in Prague or Warsaw.

Backup for Microsoft 365: Protect & Recover Your Data | Veeam

Backup for Microsoft 365 with Veeam. Protect and recover Exchange, SharePoint, OneDrive and Teams data with secure, reliable backup

Veeam Software is an equal opportunity employer
and does not tolerate discrimination in any form on the basis of race, color, religion, gender, age, national origin, citizenship, disability, veteran status or any other classification protected by federal, state or local law. All your information will be kept confidential.

Personal data collected during the recruitment process will be processed in accordance with our Recruiting Privacy Notice, which explains how your information is collected, used, and handled in connection with hiring activities. By applying for this position, you consent to this processing.

By submitting your application, you confirm that the information provided, including any supporting documents, is complete and accurate to the best of your knowledge. Any misrepresentation, omission, or falsification may result in disqualification from consideration or, if discovered after employment begins, termination of employment.

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

Senior C# Developer (VB for Cloud Infrastructure)

Veeam Software

Warsaw

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Описание вакансии

Veeam is the Data and AI Trust Company, specializing in helping organizations ensure their data and AI are fully understood, secured, and resilient to enable the acceleration of safe AI at scale. As the market leader in both data resilience and data security posture management, Veeam is built for the convergence of identity, data, security, and AI risk. Headquartered in Seattle with offices in more than 30 countries, Veeam protects over 550,000 customers worldwide, who trust Veeam to keep their businesses running. Join us as we go fearlessly forward together, growing, learning, and making a real impact for some of the world’s biggest brands.

About The Role
We are looking for a
Senior C# Developer
to help design and develop reliable, scalable backend solutions in the cloud data protection space.

Join a team responsible for building and evolving cloud backup solutions across major platforms, including Google Cloud, Amazon Web Services, and Microsoft Azure. The team develops core platform services used by multiple products and teams, working on modern backup and data protection technologies.

You will contribute to solutions around BaaS, Veeam ONE, and cloud integrations, including backup capabilities for Microsoft Entra ID.

What You'll Do

  • Designing and implementing business logic for Veeam’s core product lines (Cloud, SaaS, virtualization, backup & replication, and more)
  • Developing new features and enhancing functionality across different product modules
  • Taking ownership of major components and contributing to architectural decisions, both independently and within a team
  • Analyze and establish business requirements in collaboration with the product management team
  • Estimate the efforts required for feature implementation, including costs and capacity

What You'll Bring

  • 5+ years of software development in commercial projects
  • Proficiency in C# and a deep understanding of the .NET platform, data structures, and algorithms
  • Experience with software architecture design
  • Proactive, result-oriented mindset with strong problem-solving skills
  • English proficiency for daily communication within international teams

Bonus Skills

  • Experience with Azure or other public cloud platforms
  • Experience developing SaaS or enterprise-grade environments

What You'll Get

  • 26 paid days off annually, plus 4 extra global VeeaMe Days for self-care and 24 paid volunteer hours annually through Veeam Cares
  • Paid parental, maternity, and paternity leave
  • Fully covered family medical plan, dental, rehab, and vaccinations
  • Life, critical illness, and disability insurance
  • Employer pension contribution via PPK
  • Monthly Edenred allowance of 450 PLN for meals
  • MultiSport card fully covered by Veeam, giving access to sports facilities nationwide
  • Up to 12 free therapy sessions annually, plus legal and financial advice
  • Opportunities to learn and grow through on-demand libraries (LinkedIn Learning, O’Reilly), mentoring, workshops and learning events like our annual Global Day of Learning

Please note:
If the applicant is permanently present outside of Poland, Veeam reserves the right to refuse to consider the application for a job. Remote job is only possible in case the employee is located in Poland.

Veeam Software is an equal opportunity employer
and does not tolerate discrimination in any form on the basis of race, color, religion, gender, age, national origin, citizenship, disability, veteran status or any other classification protected by federal, state or local law. All your information will be kept confidential.

Personal data collected during the recruitment process will be processed in accordance with our Recruiting Privacy Notice, which explains how your information is collected, used, and handled in connection with hiring activities. By applying for this position, you consent to this processing.

By submitting your application, you confirm that the information provided, including any supporting documents, is complete and accurate to the best of your knowledge. Any misrepresentation, omission, or falsification may result in disqualification from consideration or, if discovered after employment begins, termination of employment.

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

Azure Cloud Engineer (Regular / Senior)

Demant Polska

Warsaw

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Описание вакансии

Would you like to shape the future of Azure based services in Demant? Are you passionate about cloud technologies, software development, DevOps culture and Agile?

At Demant Warsaw, we’re more than just an R&D center — we change lives by creating software solutions for people with hearing impairments. As part of the global Danish company Demant, we contribute to one of the largest healthcare ecosystems in the world.

Our cloud solutions support hearing instruments and their users, mobile application users, hearing professionals, Demant leaders in their decision making process, and more.

Working with us you will receive:

  • a full-time position with a permanent contract after a successful 3-month trial period
  • a meaningful role where your work shapes solutions used by the rest of the company and built upon
  • a hybrid work model combining remote work (up to 3 days/week) and presence in our modern Warsaw office
  • an option to participate in trainings and conferences
  • a generous benefits package (private medical care, sports card, and more)
  • a Scandinavian-style work culture that values equality, autonomy, and work-life balance

What tasks are waiting for you?

  • Design and develop Cloud based solutions.
  • Share expert knowledge with team members and external stakeholders.
  • Collaborate with your teammates in a Scrum team, conduct code reviews, etc.
  • Execute tests and reports according to established processes.
  • Review and provide input to requirements.
  • Stay updated on new Azure trends and technologies.
  • Ensure compliance with established guidelines, standards and practices.

We expect you to:

  • have experience with containerization (especially Azure Kubernetes Service)
  • have experience with Azure Cosmos DB, Azure SQL, Azure Storage
  • write multistage pipelines in Azure DevOps or GitHub
  • automate using PowerShell Core or bash
  • design observability patterns in applications
  • have an experience with dotnet API services

It would be nice if you additionally:

  • have experience with Cloud messaging (preferably Azure Event Hub, Azure Service Bus),
  • are familiar with SecOps practices and are able to integrate them into the CI/CD pipelines
  • have experience with performance testing, pen testing, E2E tests
  • know CNCF projects (e.g. Grafana, Prometheus, OpenTelemetry, ARGO, gatekeeper)
  • have experience in using AI tools at work
  • are self-driven and teamwork oriented
  • can communicate in English

#Demant_Poland

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

Senior Fullstack Engineer (React+Java)

Jit Team

Warsaw

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Описание вакансии

Wynagrodzenie: 1200 - 1440 PLN/md B2B
Model pracy:
Hybryda z Warszawy / Krakowa

Dlaczego warto wybrać tę ofertę?

  • Będziesz rozwijać nowoczesne rozwiązania AdTech, wspierające zarządzanie kampaniami reklamowymi.
  • Dołączysz do projektu łączącego frontend, backend i Machine Learning, rozwijając systemy rekomendacyjne oparte na danych.
  • Zyskasz możliwość pracy z nowoczesnym stackiem technologicznym, obejmującym React, TypeScript, Kotlin i GCP.
  • Będziesz mieć realny wpływ na rozwój mikrofrontendów, mikroserwisów oraz architektury event-driven

Projekt
Dołączysz do projektu z obszaru
AdTech, którego celem jest rozwój inteligentnych narzędzi wspierających zarządzanie kampaniami reklamowymi
. Projekt obejmuje budowę systemów rekomendacyjnych, rozwój usług backendowych oraz przetwarzanie dużych wolumenów danych w architekturze event-driven.

W ramach projektu będziesz uczestniczyć także w tworzeniu wydajnych interfejsów API oraz rozwoju nowoczesnych dashboardów analitycznych, dostarczających użytkownikom wartościowe dane i rekomendacje biznesowe.

Zakres obowiązków

  • Tworzenie usług backendowych generujących i dostarczających spersonalizowane rekomendacje dla użytkowników
  • Współpraca z zespołami Data Science przy integracji rozwiązań machine learningowych
  • Rozwój rozproszonej architektury opartej na zdarzeniach (event-driven)
  • Przetwarzanie danych o kampaniach z wykorzystaniem chmury obliczeniowej i systemów kolejkowych
  • Budowa wysokowydajnych interfejsów API wspierających dashboardy oraz benchmarki rynkowe
  • Tworzenie i utrzymanie skalowalnych mikrofrontendów opartych na React
  • Dbanie o dostępność (a11y) i wydajność (SSR) rozwijanych aplikacji

Oczekiwane kompetencje i doświadczenie

  • Doświadczenie w roli Fullstack Developera, ze szczególnym naciskiem na rozwój aplikacji frontendowych
  • Bardzo dobra znajomość TypeScript, React oraz HTML/CSS
  • Doświadczenie w tworzeniu, rozwijaniu i utrzymaniu nowoczesnych aplikacji webowych
  • Znajomość frameworków testowych, takich jak Jest, Vitest lub Playwright
  • Doświadczenie w rozwoju usług backendowych z wykorzystaniem Java lub Kotlin i Spring Boot
  • Znajomość architektury mikroserwisowej
  • Doświadczenie w pracy z bazami danych MongoDB oraz SQL
  • Znajomość środowisk chmurowych, preferowane Google Cloud Platform (GCP)
  • Umiejętność projektowania i rozwijania skalowalnych rozwiązań w środowisku cloudowym
  • Praktyczne doświadczenie w wykorzystaniu narzędzi wspierających programowanie opartych na AI, takich jak Copilot, OpenCode lub podobnych rozwiązań agentowych
  • Umiejętność efektywnej współpracy pomiędzy obszarami frontendu i backendu oraz pracy w środowisku opartym na nowoczesnych technologiach webowych

Technologie
z jakimi będziesz pracować

  • TypeScript
  • React
  • CSS/HTML
  • Jest/Vitest/Playwright
  • Kotlin
  • Cloud ecosystem, preferred GCP
  • MongoDB
  • SQL
  • Spring Boot
  • Microservices
  • Copilot/OpenCode

Klient
– dlaczego warto wybrać akurat tego klienta z portfolio JIT?

Nasz klient to
największy fintech w Europie środkowej
- unikalne miejsce, gdzie na bardzo dużą skalę można obsługiwać finanse, korzystając z najnowszych technologii. Jest to
spółka wspierająca lidera polskiego rynku e-commerce
(z 20 milionami użytkowników). Jest to również
duża firma technologiczna, rozwijająca swoje własne technologie i inwestująca szeroko w różne „nowinki” techniczne
.

Współpraca z tym klientem rozpoczęła wiosną 2021 roku.
Zespoły Jit Team zajmują się rozwojem systemu dotyczącego odroczonych płatności
oraz wprowadzeniem własnej metody płatności, która ma zastąpić dotychczasowe rozwiązanie.

Współpraca z tym Klientem, to okazja do budowania powszechnego rozwiązania, używanego na co dzień przez wielu z nas. To również okazja do budowy oprogramowania, które działa w naprawdę dużej skali – gdzie każda sekunda opóźnienia pomnożona przez liczby użytkowników to ogromny problem. Jest to również okazja do pracy z nowoczesnymi, innowacyjnymi technologiami i narzędziami, które trudno znaleźć gdzie indziej.

O Jit Team
The Human factor of IT - to nie tylko slogan, to filozofia. Fundamentem Jit Team są ludzie, dlatego to właśnie Was traktujemy priorytetowo. Zatrudniamy ponad 770 doświadczonych ekspertów, którym oferujemy rozwojowe projekty, szeroki zakres benefitów oraz autorski program rozwoju zawodowego. Wspólnie z klientami z całego świata tworzymy innowacyjne rozwiązania IT, dostarczane przez wysoko specjalizowane i efektywne zespoły.

Za naszą maksymą stoją, także działania charytatywne i edukacyjne. Wspieramy szkoły, uczelnie i instytucje edukacyjne – prowadząc zajęcia, projekty edukacyjne, sponsorując wydarzenia czy przekazując sprzęt do nauki. Oferujemy staże umożliwiające rozpoczęcie kariery w IT. Wspieramy ratowników wodnych oraz szpitale, dostarczając potrzebne wyposażenie. Wspieramy też liczne organizacje charytatywne wspierające ubogich, dzieci i osoby starsze. Jesteśmy Polską firmą i dzielimy się tym, co osiągnęliśmy przez ponad 15 lat działalności. Wspierając rodzime inicjatywy, dbamy o obieg dobrej energii.

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Senior AI Platform EngineerN-iX · Poland

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