Senior Java Software Engineer på Capital.com i Warsaw
Capital.com · Warsaw
Senior Java Software Engineer
We are a leading trading platform that is expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutt...
We are a leading trading platform that is expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutting-edge technology and seamless client experience. We deliver only the best, so we are always in search of the best people to join our ever-growing talent team.
We are currently growing our Backend Team and looking for great Engineers with an interest in trading to join us! Our Engineering team plays a pivotal role in ensuring the robustness, speed, and security of our product. Dedicated to enhancing performance, providing a best-in-class user experience, ensuring compliance, and safeguarding data, the team's efforts directly impact our ability to offer clients a seamless and secure trading journey.
We believe great engineering talent not only delivers excellent code, but also lives our values. We are looking for someone who is eager to go fast, willing to innovate and grow, who knows how to listen, respect and support, strives to exceed client expectations, and takes full ownership to achieve real results.
About Us:
At TechStack Global AB, we’re a close-knit team of software engineers who are genuinely passionate about technology. Our mission is to empower our clients by helping them achieve their digital aspirations. Unlike typical consultancies, we prioritize hiring top-notch tech talent and pairing them with projects that truly challenge and inspire them, ensuring that their skills are fully utilized.
Are you a Senior Java Developer looking for an opportunity to work with cutting-edge technology, microservices architecture, and scalable cloud solutions? Join our team and be part of a dynamic environment where innovation meets impact!
🔹 About the Role:
As a Senior Java Developer, you will play a key role in designing, developing, and deploying scalable applications. You’ll work with Java, Spring Boot, microservices, REST APIs, AWS, and Kafka to build robust and high-performance backend systems. If you enjoy problem-solving, writing clean and efficient code, and working in a collaborative team, this is the role for you!
🔹 Key Responsibilities:
✔ Develop, enhance, and maintain high-performance Java-based applications.
✔ Design and implement RESTful APIs to support business needs.
✔ Architect and develop microservices-based applications with Spring Boot.
✔ Deploy and manage applications in AWS, ensuring scalability and security.
✔ Work with Kafka for real-time data streaming and event-driven architecture.
✔ Collaborate with cross-functional teams to deliver high-quality software solutions.
✔ Optimize applications for performance, scalability, and maintainability.
🔹 Required Skills & Experience:
✅ Strong experience in Java development.
✅ Expertise in Spring Boot and microservices architecture.
✅ Hands-on experience with REST API design and development.
✅ AWS cloud services experience (EC2, S3, Lambda, etc.).
✅ Knowledge of Kafka and event-driven systems.
✅ Experience with Agile development methodologies.
✅ Strong problem-solving and debugging skills.
📌 What We Offer:
🌟 Work on exciting projects using modern technology stacks.
🌟 A collaborative and innovative team environment.
🌟 Competitive salary & benefits package.
🌟 Opportunities for career growth and skill development.
🌟 Flexible work arrangements, including hybrid/remote options.
📩 How to Apply?
To apply for this position, please submit your resume and a cover letter outlining your relevant experience and why you're a good fit for the role. You can apply directly through LinkedIn or send your application to contact@techstack.se.
#Hiring #JavaDeveloper #SpringBoot #Microservices #AWS #Kafka #SoftwareEngineering #BackendDevelopment
🚀 Senior Software Engineer Java (F/H) – SFEIR Nantes
Tu débats de Clean Architecture à la pause café ?
Tu regardes les nouveautés Java à chaque release et tu considères qu’un bon développeur backend doit comprendre autant le code que l’écosystème qui l’entoure ?
Tu es convaincu(e) que l’IA va transformer le métier de développeur, mais que l’expertise technique restera plus importante que jamais ?
Bienvenue chez SFEIR Nantes.
🤔 C’est quoi SFEIR ?
SFEIR, c’est avant tout une communauté de 900 techs en France, Belgique et Luxembourg, réunis autour d’une même passion : construire des solutions modernes, apprendre et transmettre.
Nous accompagnons nos clients sur :
🔹 Le développement d’applications web & mobiles ;
🔹 Les architectures Cloud, Platform Engineering et Data ;
🔹 L’IA générative et les nouveaux usages augmentés ;
🔹 Les meilleures pratiques Software Engineering et Cloud Native.
🚀 Pourquoi les ingénieurs rejoignent aussi SFEIR aujourd’hui
SFEIR est partenaire officiel d'Anthropic et partenaire Premium Google Cloud.
Pour nos ingénieurs, cela signifie être au plus près des évolutions de l’IA générative, du Cloud et des nouveaux usages qui transforment déjà le métier de développeur.
Nous sommes convaincus que les développeurs les plus recherchés demain seront ceux capables de combiner excellence technique, maîtrise du Software Engineering et utilisation intelligente des outils d’IA.
Chez SFEIR, tu ne subis pas cette transformation.
Tu apprends à la piloter.
🧠 Ce qu’on recherche chez toi
Tu n’as pas peur de :
🔹 Développer des architectures backend modernes avec Java 21+ et Spring Boot ;
🔹 Concevoir des applications robustes, maintenables et évolutives ;
🔹 Penser performance, observabilité, résilience et scalabilité ;
🔹 Travailler dans des environnements Cloud Native (GCP, AWS, Kubernetes, Docker) ;
🔹 Challenger les choix techniques et faire évoluer les pratiques ;
🔹 Réaliser des revues de code exigeantes et bienveillantes ;
🔹 Partager ton expertise avec d’autres passionné(e)s.
Tu aimes comprendre comment les choses fonctionnent.
Pas simplement faire tourner des microservices.
🛠️ Les projets sur lesquels tu pourrais t’éclater
🔹 Concevoir des architectures distribuées robustes ;
🔹 Développer des APIs à fort trafic et des systèmes critiques ;
🔹 Participer à des projets mêlant Java, Cloud, Data et IA générative ;
🔹 Construire des plateformes Cloud Native sur Google Cloud ;
🔹 Travailler sur des problématiques de performance, CI/CD, observabilité et Event Driven Architecture ;
🔹 Accompagner nos clients dans la modernisation de leurs applications ;
🔹 Expérimenter les nouveaux usages de l’IA appliqués au développement logiciel.
Bref, du concret.
Pas des projets figés depuis Java 8 😄
🚀 Pourquoi rejoindre SFEIR Nantes ?
Parce qu’ici, la technique est réellement au centre des décisions.
Tu rejoins une communauté où :
🔹 Les Engineering Managers continuent à pratiquer la technique ;
🔹 Les architectes restent proches du terrain ;
🔹 Les talks et retours d’expérience sont animés par les équipes ;
🔹 Le partage de connaissances fait partie du quotidien ;
🔹 Les compétences comptent davantage que les titres.
Chez SFEIR, nous fonctionnons comme une Skill-Based Organization.
Ton évolution dépend avant tout de ce que tu construis, de ce que tu transmets et de l’impact que tu apportes.
🤖 Et l’IA dans tout ça ?
Chez SFEIR, l’IA fait déjà partie du quotidien des ingénieurs.
Tu auras accès à RAISE, notre plateforme GenAI interne multi-LLM, utilisée par nos équipes pour :
🔹 Accélérer le développement logiciel ;
🔹 Construire des assistants métiers ;
🔹 Développer des systèmes RAG ;
🔹 Expérimenter autour des agents IA ;
🔹 Automatiser certaines tâches d’ingénierie ;
🔹 Explorer les nouveaux usages du développement augmenté.
L’objectif n’est pas de remplacer les développeurs.
L’objectif est de permettre aux meilleurs ingénieurs d’aller encore plus loin.
👌 Ce que tu trouveras chez nous
🔹 Un management technique de proximité ;
🔹 Une communauté Java particulièrement active ;
🔹 Des meetups, labs, talks et formations toute l’année ;
🔹 Un accès aux certifications Google Cloud et AWS ;
🔹 Des trajectoires d’évolution variées : Staff Engineer, Engineering Manager, Speaker, Trainer ou Évaluateur ;
🔹 Une forte culture du Craft, du Clean Code et de l’Architecture ;
🔹 Une communauté IA qui expérimente déjà les usages de demain.
🌊 Et Nantes dans tout ça ?
SFEIR Nantes, c’est :
🔹 Plus de 60 ingénieurs passionnés ;
🔹 Une communauté tech en croissance continue ;
🔹 Plus de 20 clients locaux et nationaux ;
🔹 Une forte présence dans l’écosystème nantais ;
🔹 Des speakers présents sur les principaux événements tech ;
🔹 Des locaux à la Halle 6, au cœur de l’Île de Nantes ;
🔹 Des talks, meetups, afterworks et SFEIR Schools tout au long de l’année.
Ici, on aime autant débattre de Java 23, Kafka ou DDD que comparer les meilleurs prompts pour générer des tests unitaires 😄
🎯 En pratique
📍 Localisation : Nantes
🏠 Télétravail : 2 à 3 jours par semaine selon les contextes clients
⚙️ Stack fréquente : Java 21+, Spring Boot 3, Kafka, PostgreSQL, Docker, Kubernetes, GCP, GitLab CI/CD, Terraform, APIs REST, Event Driven Architecture
🎮 La suite des événements
🔹 Premier échange avec Justine Thiriet ;
🔹 Entretien RH personnalisé ;
🔹 PlayOffs techniques en pair programming avec des Sfeirien(ne)s ;
🔹 Échanges autour du Software Engineering, de Java et de l’architecture ;
🔹 Rencontre avec l’équipe business ;
🔹 Échange final avec le management local.
🤩 Ready to build with us ?
Tu veux construire des applications modernes avec une communauté passionnée où la technique est réellement au centre ?
🚀 Le métier de développeur se transforme profondément.
Les ingénieurs les plus recherchés demain seront ceux capables de combiner expertise logicielle, compréhension des architectures modernes et maîtrise des nouveaux outils d’IA.
Rejoindre SFEIR, c’est choisir un environnement qui te permet de développer ces compétences dès aujourd’hui.
Le futur du développement se construit maintenant.
Viens le construire avec nous.
PURPOSE OF POSITION
Awin's Product Development department is responsible for all stages of the product lifecycle - from ideation to market release,
ongoing operation and continuous improvement.
Working within one of our agile Engineering teams, this role reports to an Engineering Manager. As a Senior Software Engineer, you
will be a technical leader within the team - driving architectural decisions, owning complex technical initiatives, and raising
the engineering bar across the team and beyond.
As a Senior Software Engineer, writing SOLID, secure & well-tested code is a given. You bring deep commercial experience across
your technical stack and a strong understanding of infrastructure, platform engineering and cloud-native patterns. You are
comfortable navigating ambiguity, making pragmatic trade-offs, and communicating technical direction to both engineers and
stakeholders.
You are a passionate and innovative technologist with a proactive, quality-first approach to development and keen to gain exposure
to the latest development practices and toolsets within an interactive and fun development environment. We value fresh
perspectives, continuous personal growth, diversity and a healthy work-life balance. For example: we have a 4-day week at full
salary.
The Core Team is a platform team in the Developer Platform domain. Its mission is to provide central services around our core
entities and systems that make it easier for Product Teams to build functionality on top of. The team provides these "as a
service" through clear APIs, documentation and support - focusing on creating a smooth developer experience for other teams. The
team also focuses on topics like standardisation, re-use and reducing duplicated effort across the department.
As a Senior Engineer in this team, you will play a key role in shaping the platform's infrastructure direction - including API
gateways, load balancers, authentication flows, and container orchestration - ensuring our platform is reliable, secure and
scalable.
AS A SENIOR SOFTWARE ENGINEER, YOU WILL:
* Drive technical design and architectural decisions for platform services and infrastructure
* Own and deliver complex technical initiatives from concept to production
* Work in a small agile team, contributing to planning, reviews and retrospectives
* Design, build and improve applications with a focus on infrastructure, reliability and developer experience
* Mentor and support fellow engineers
* Collaborate with other teams to define API contracts and drive adoption of platform services
* Work with Product Managers and the Engineering Manager to shape the technical roadmap
* Troubleshoot and resolve complex production issues; participate in on-call rotations
TO BE SUCCESSFUL YOU WILL NEED TO MEET THE BELOW REQUIREMENTS:
* 5+ years of commercial Software Engineering experience
* Strong experience with Java, Maven/Gradle, RESTful APIs, and thorough testing practices
* Solid experience with AWS cloud services and infrastructure (ECS, Fargate, ALB, API Gateway, Lambda, DynamoDB)
* Hands-on experience with Infrastructure as Code, specifically Terraform
* Experience with containerisation and orchestration (Docker, ECS/Fargate)
* Understanding of networking concepts: load balancing, API gateways, DNS, TLS/SSL
* Understanding of user and client authentication and authorisation flows (OAuth2, OIDC, JWT)
* Proven ability to lead technical discussions, make architectural decisions and drive them to completion
* Comfortable with on-call responsibilities and incident response
* Proficient in using AI-assisted development tools (e.g., Cursor, Claude Code, GitHub Copilot) to accelerate delivery and
improve productivity
ALTHOUGH NOT REQUIRED, WE WOULD BE EXCITED IF YOU HAD EXPERIENCE WITH SOME OF THE BELOW:
* Service mesh concepts and technologies
* Observability and monitoring (CloudWatch, distributed tracing, structured logging)
* CI/CD pipeline design and optimisation
Our Offer
* Flexi-Week and Work-Life Balance: We prioritise your mental health and wellbeing, offering you a flexible four-day Flexi-Week
at full pay and with no reduction to your annual holiday allowance. We also offer a variety of different paid special leaves.
* Remote Working Allowance: You will receive a monthly allowance to cover part of your running costs. In addition, we will
support you in setting up your remote workspace appropriately.
* Flexi-Office: We offer an international culture and flexibility through our Flexi-Office and hybrid/remote work possibilities
to work across Awin regions
* Meal Vouchers: You will be supported with a certain net sum to spend it on a variety of lunches.
* Health & Wellbeing: The insurance covers several types of health, vision and / or dental treatments for you and for up to one
additional family member.
* Remote Working Furniture Package: After 3 months of employment, you will be eligible for a furniture package, which should
enable you to set up a proper workplace at your remote working location
* Appreciation: Thank and reward colleagues by sending them a voucher through our peer-to-peer program.
Established in 2000, Awin is proud of our dynamic, social and inclusive culture.
Like all businesses, we’ve had to adapt and nurture our culture in a virtual environment. Our virtual ‘Life @ Awin’ hub brings our
colleagues from across the globe together for various social activities.
Diversity & Inclusion are paramount to us, and we proudly pursue and hire diverse team members. We champion uniqueness and
authenticity; this is who we are at our core. Our network of affiliate partnerships are diverse and transparent, as are the
employees powering our vision to build the world’s leading open partner ecosystem. We welcome all backgrounds, identities, and
experiences. If you need support at any point in the application or interview process, please let us know.
Awin is part of the Axel Springer group. Learn more at axelspringer.com/en/, and explore the Axel Springer Essentials here:
axelspringer.com/en/inside/the-essentials-what-we-have-adapted-and-why
Apply now to begin the next stage of your career at a progressive company that supports both your professional and personal
development.
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