Regístrate para acceder a todas las funciones de nuestro servicio
  • Búsqueda de ofertas de trabajo
  • Favoritas
  • Crear CV
    Nuevo
  • Salario
  • Alertas de empleo

Senior Backend Engineer

Appinio

Allow us to introduce ourselves

Hello there! We’re Appinio, a global market research company that combines an AI-powered insights platform with expert consultancy. On a mission to make the world a little more fact-based, we help companies understand how consumers think and make smarter decisions.

We started out in Hamburg back in 2014, but we’re now humbled to call the world our playground, with over 260 employees spread across 13 countries (we’re remote-first), 2600+ international clients, delivering research from +190 markets, globally.

Want to be a part of the Appinio movement?

Here at Appinio, we value transparency in our recruitment process , and we've created a blog to share what to expect during each step of our journey together:  

Your mission as a Senior Backend Engineer

We are looking for a passionate ( Senior) Backend Engineer (m/f/d) to join our amazing backend team. In this role, you will be responsible for developing new features and enhancing our existing code base using NodeJs, Express, and MongoDB.

What you’ll be doing

  • Design and maintain server-side applications and database architecture.
  • Collaborate with front-end developers for a seamless user experience.
  • Regularly review and improve code and system efficiency.
  • Develop and deploy reusable, testable code and automated tests

You will thrive in this role if

  • You have at least 3 years of hands-on experience with Node.js, along with strong proficiency in TypeScript and Express.
  • You have practical experience working with NoSQL databases, preferably MongoDB.
  • You have a solid understanding of object-oriented programming principles.
  • You hold a degree in Computer Science or a related field – or have completed a comparable vocational training
  • Having AWS (S3, ECS, EC2), Docker and Terraform experience is a plus
  • Having previous experience with NestJS is a plus
  • You are a proactive problem solver, always seeking innovative solutions and continuously improving processes.
  • You are willing and able to get familiar with new systems.
  • You are a team player and enjoy collaborating with cross-functional teams.
  • You thrive in a collaborative environment, valuing team input and ensuring alignment with project goals.

How we work

  • We work in small, agile product teams with lots of ownership and fast decision-making.
  • You’ll collaborate with smart, driven, and genuinely nice people.
  • We keep meetings to a minimum – focus time matters.
  • We use a modern tech stack that supports us in building great products:
    • Backend: Node.js (TypeScript), Express, MongoDB, AWS, Docker, Terraform
    • Frontend: Angular, Flutter
    • Tools we love: GitHub, ClickUp, Slack

What’s in it for you?

  • Flexibility Policy - Average is 30 days taken, however, we do not have a hard cap of number of vacation days as we know life happens
  • Temporary work from abroad - If you're based in the EU, you can work outside your country of residence for up to 180 days per year
  • All the hardware you need and  your own MacBook
  • If you are located in Hamburg or Berlin, you'll get a  Deutschland ticket or access to a mobility budget with the  NAVIT app to get you to and from the office space
  • Subsidised Urban Sports Club or ClassPass membership based on location
  • In case you’re located in one of the cities where most of our fellow Appinioneers are (Hamburg, Berlin, Munich, London, Madrid, Barcelona, or New York), you can get access to our  Co-working spaces

Additional role details

  • This is a  fully remote position open to candidates based in Germany, the UK, Portugal, the Netherlands, and Spain
  • This role will report directly to our Head of Infrastructure

Our interview process

  • Screening Call with a Talent Acquisition Partner
  • Technical Interview with our Engineering Team
  • Case Study Interview with our Engineering Leadership Team
  • Executive Interview with C-Level
  • Reference Calls
  • Offer

Kind reminder: Please ensure that your application is submitted in English.

This post not only outlines our ideal candidate but also serves as an inspiration for what this role can evolve into. Even if you consider yourself an 80% fit but have a genuine passion for this position, we encourage you to apply. We're eager to hear from individuals who share our enthusiasm.

Appinio is an equal-opportunity employer. All applicants will be considered for employment without attention to race, colour, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.

Please read our privacy policy here .

Learn more about us:

 

Oferta de empleo publicada Hace un mes
Ofertas similares que pueden interesarteSegún la Senior Backend Engineer en Madrid
  •  ...JetBrains seeks a backend specialist to own entitlement, metering, and billing systems. You will design and operate JVM-based services, evolve data flows from licensing to quotas, and ensure correctness across distributed components. The role focuses on building reliable... 
    Senior
    Remoto

    JetBrains

    Madrid
    1 día atrás
  •  ...Aircall is seeking a Senior Backend & AI Engineer responsible for designing, developing, and deploying critical AI features. With a focus on LLMs, you will be involved in building chatbots and automated content generation tools. The position emphasizes collaboration,... 
    Senior

    Aircall

    Madrid
    2 días atrás
  •  ...AiFi is seeking a Backend Software Engineer to optimize highly concurrent systems and scale our store operating systems from small to large venues. You will shape core backend microservices and collaborate with app developers and product managers to address real-world... 
    Senior

    Cervin

    Madrid
    1 día atrás
  •  ...Ebury's FinCore Engineering team seeks a Senior Software Engineer to modernize our FX platform, reduce technical debt, and build high-throughput backend systems. You will lead architecture choices, own delivery from discovery through production, and mentor others across... 
    Senior
    Trabajar en la oficina
    Remoto
    Trabajo híbrido

    Ebury

    Madrid
    2 días atrás
  •  ...Parser Limited is seeking a Senior Backend Engineer to design and deliver scalable backend services. You will work with TypeScript, Node.js, Go, and AWS, building high-throughput microservices and real-time data pipelines for an AI-enabled product. You will design event... 
    Senior
    Remoto

    Parser Limited

    Madrid
    4 días atrás
  •  ...bsport is an all-in-one platform for boutique fitness and technology. We are hiring a Senior Backend Engineer in the Community & Engagement team to build scalable backend systems for marketing, communications and member data across thousands of studios worldwide. You... 
    Senior

    Tamarind Intelligence

    Madrid
    1 día atrás
  •  ...Vic.ai in Madrid, Spain, is seeking a Senior Backend Engineer to own the integration platform that connects our customers' ERP systems to Vic.ai and push results back at scale. We’ll build and operate backend services with TypeScript/Node.js, Elixir/Phoenix, and Python... 
    Senior

    Cacheflow

    Madrid
    1 día atrás
  •  ...Vic.ai, Inc. is seeking a Senior Backend Engineer to join the team behind our AI-first iPaaS. You will build and operate the integration platform that connects customers' ERP and financial systems to Vic.ai, with data syncing at scale and AI-assisted onboarding. You... 
    Senior
    Remoto

    Vic.ai, Inc

    Madrid
    1 día atrás
  •  ...Colliers Madrid is seeking an experienced Senior Backend Engineer to join our newly established Technology Hub in Madrid. You will design, develop and maintain scalable enterprise software, collaborating with global teams in a hybrid model that combines remote and onsite... 
    Senior
    Remoto
    Trabajo híbrido

    Colliers

    Madrid
    2 días atrás
  •  ...Swiss Re is seeking a Senior Backend Engineer in Madrid to design, build and operate core services powering our enterprise IT ecosystem. You will lead backend development with Golang, implement RESTful APIs and CI/CD pipelines, and support AI-enabled PoCs in collaboration... 
    Senior

    Swiss Re - Schweizerische Rückversicherungs-Gesellschaft

    Madrid
    3 días atrás
  •  ...Quipu, part of TeamSystem, is hiring a Senior Backend Developer (Ruby on Rails) to evolve our SaaS platform used by thousands of customers daily. You will join a skilled Product and Technology team building backend features, improving scalability, and delivering robust... 
    Senior
    Trabajo híbrido

    QUIPU APP S.L.

    Madrid
    4 días atrás
  •  ...J.P. Morgan Personal Investing is seeking an engineer to join a squad delivering a first-class mobile and web investment experience. You will build and integrate with digital asset providers, work in a Java/Spring Boot/Kotlin stack, and evolve architecture toward microservices... 
    Senior

    JPMorgan Chase & Co.

    Madrid
    5 días atrás
  •  ...Rechat Inc is seeking an experienced Backend Engineer to architect and maintain core services powering our CRM and Marketing platforms. You will design scalable data models and write high-performance SQL queries, ensuring robust testing and smooth API evolution. The... 
    Senior
    Remoto
    Horario flexible

    Rechat Inc

    Madrid
    3 días atrás
  •  ...día más sólido. Actualmente estamos en búsqueda de un/una Backend MLOps Engineer para un importante proyecto en cliente. ¿Qué buscamos?...  ...Databricks, Azure, AKS, Fast API, Python. Perfil Midlle/ Senior, a partir de 4 años de experiencia laboral. ¿Qué podemos ofrecerte... 
    Senior
    Indefinido
    Tiempo completo
    Remoto

    Metrica

    Madrid
    1 día atrás
  •  ...Neara is looking for a Senior Software Engineer (Backend) to join our remote engineering team. You will design, build, and maintain backend services in Go and Python across a microservices architecture. Your role involves collaborating closely with clients and taking ownership... 
    Senior
    Remoto

    Neara

    Madrid
    1 día atrás
  •  ...EPAM Systems in Madrid is seeking a Senior Software Engineer to design and implement high-performance Java backend solutions for post-trade processing systems used by global financial institutions. The role is hybrid in Madrid. You will translate complex business and... 
    Senior
    Trabajo híbrido

    EPAM Systems

    Madrid
    2 días atrás
  •  ...ERNI in Barcelona is seeking a senior backend engineer to build and evolve an intelligent Python-based backend for an Agentic AI solution. You will implement scalable services, secure APIs, and cloud-native components using Python, OpenShift, Docker, and related tools.... 
    Senior
    Trabajar en la oficina
    Trabajo híbrido
    2 días a la semana

    ERNI - Swiss Software Engineering

    Madrid
    3 días atrás
  •  ...Searchability is seeking a Senior Backend Software Engineer to join their team in Madrid. This hybrid role involves working with Java and Kotlin on scalable backend applications and collaborating with a high-performing engineering team while using modern cloud-native... 
    Senior
    Trabajo híbrido

    Searchability

    Madrid
    5 días atrás
  •  ...in Europe and the rest of the world! Join us to write the next chapter of your career! About the role: As a Senior Backend Engineer in our Community & Engagement team, you’ll help build and evolve the backend systems powering our marketing and communications... 
    Senior
    Trabajar en la oficina
    Trabajo híbrido
    Horario flexible

    Tamarind Intelligence

    Madrid
    1 día atrás
  •  ...Backend Engineer – AI Integrations Location: Remote (Madrid Hybrid) Department: Engineering About Vic.ai Vic.ai is building the...  ...for real customers. The Role We're seeking a Senior Backend Engineer to join the team behind our AI-first, in-house... 
    Senior
    Remoto
    Trabajo híbrido

    Vic.ai, Inc

    Madrid
    2 días atrás
  •  ...BCNC Group está buscando un/a Senior Backend Developer Java para impulsar una plataforma logística global. Participarás desde cero en decisiones de diseño y evolución tecnológica, trabajando codo a codo con un responsable técnico dentro de un equipo ágil. Se requiere... 
    Senior

    BCNC GROUP

    Madrid
    2 días atrás
  • de 60000 a 100000 €/año

     ...Our team is a diverse, internationally connected group of engineers and architects, united by a commitment to pragmatic engineering...  ...enterprise CMDB and its integrations. We are seeking a Senior Backend Engineer with strong Golang expertise to design, build, and operate... 
    Senior
    Tiempo completo
    Contrato

    Swiss Re - Schweizerische Rückversicherungs-Gesellschaft

    Madrid
    3 días atrás
  •  ...Deutsche Bank AG busca un Senior Engineer para desarrollar software backend de alto rendimiento en Java con foco en GCP. El rol implica diseñar arquitecturas escalables, participar en todo el ciclo de desarrollo y aplicar IA para automatización y optimización, manteniendo... 
    Senior
    Práctica
    Trabajo híbrido

    Deutsche Bank AG

    Madrid
    3 días atrás
  •  ...Sinch AB is looking for a Senior Software Engineer based in Spain to design and build the next generation of the Contacts Platform. The role is...  ...include developing scalable distributed systems, maintaining backend services, and collaborating with cross-functional teams.... 
    Senior
    Trabajar en la oficina
    Remoto

    Sinch AB

    Madrid
    1 día atrás
  •  ...Jobtailor busca un/a desarrollador/a backend senior con Java 17+ y Spring Boot para desarrollar, mantener y evolucionar soluciones en la nube, asegurando integración entre sistemas. Trabajarás estrechamente con equipos funcionales y técnicos para analizar requisitos,... 
    Senior

    Jobtailor

    Madrid
    3 días atrás
  •  ...their Madrid Hub is expanding from 20 to over 100 top-tier engineers in 2026. This is your chance to join a high-growth environment...  ...are the top priorities. Job description: As a Senior Backend Engineer , you will be the backbone of our client transparency engine... 
    Senior
    Contrato
    Trabajar en la oficina
    Remoto
    Trabajo híbrido

    actual-talent.com - Jobboard

    Madrid
    4 días atrás
  •  ...Softtek te ofrece un rol de Senior Backend Developer en Madrid, trabajando en un entorno tecnológico a gran escala donde la innovación, la calidad de código y la mejora continua son habituales. Buscamos experiencia sólida en Java 17/21, microservicios y APIs REST,... 
    Senior

    Softtek

    Madrid
    4 días atrás
  • de 30000 a 35000 €/año

     ...Metrica España busca un/a Desarrollador/a Backend Senior Java para un proyecto tecnológico de gran envergadura, trabajando en servicios backend con Java y Spring Boot en entornos con legado y arquitectura basada en eventos. Formarás parte de un equipo internacional y... 
    Senior
    Indefinido
    Remoto

    Metrica

    Madrid
    3 días atrás
  •  ...IT Partner busca un/a Java Backend Developer Senior para unirse a un proyecto estratégico en el área financiera, trabajando en la renovación de sistemas core de pricing y trading de FX. Formarás parte del equipo Price & Distribution, con foco en plataformas globales... 
    Senior
    Inicio inmediato

    IT Partner

    Madrid
    1 día atrás
  •  ...Babel Group. busca un Desarrollador Senior Java para un proyecto en el sector TELCO. Se requiere más de 5 años de experiencia en desarrollo...  ...en tecnología. El rol incluye el desarrollo de aplicaciones backend y la optimización de su rendimiento. Trabajarás en un entorno... 
    Senior
    Aprendiz
    Remoto

    Babel Group.

    Madrid
    1 día atrás

¿Quieres recibir más ofertas?

Suscríbete y recibe ofertas similares para Senior Backend Engineer. ¡Entérate antes que nadie!