Senior Fullstack Developer

Reaktor Group konserni; Lisboa; Presencial; EUR 60 000 - 90 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Apple MacBook and iPhone

Meal voucher (Coverflex)

Health insurance (Médis)

Mental health support (OpenUp)

Monthly flexible benefit

Phone & internet coverage

Resumo da oferta

Reaktor Lisbon is seeking an experienced Senior Fullstack Developer to join one of our Business Units in Lisbon. You’ll work across modern web applications, backend services and production systems, solving ambiguous problems with clients in a low‑hierarchy environment.

You will support clients across digital product, platform and service domains, collaborating with client tech teams, designers and product people to turn ambiguous requirements into working software.

Qualificações

• Strong experience in backend service development with Node.js, Java, Kotlin, Scala, Python or similar.
• Experience shipping production-grade digital products.
• Comfortable with full delivery lifecycle from implementation to testing and deployment.
• Understanding of cloud environments, CI/CD, deployments and production operations.
• Ability to work directly with clients, stakeholders and other disciplines in a senior, consultative role.
• Hands-on mindset with technical credibility and contribution to delivery.
• Fluent verbal and written English skills for international collaboration.

Responsabilidades

• Build and improve modern web applications, backend services, APIs and data models.
• Work across frontend, backend and infrastructure depending on client needs.
• Help clients choose technologies, architecture and delivery approaches.
• Contribute to cloud environments, CI/CD pipelines, deployments and production quality.
• Debug, test, monitor and improve production-grade systems.
• Collaborate with client tech teams, designers, and product people.

Conhecimentos

Backend development

Fullstack experience

Client-facing experience

Cloud & CI/CD

English fluency

Descrição da oferta de emprego

Reaktor's tech community is looking for an experienced Senior Fullstack Developer to join one of our Business Units in Lisbon.

If you are comfortable working across modern web applications, backend services and production systems, enjoy solving ambiguous problems with clients, and are curious to work in a low-hierarchy environment, you might just be what we’re looking for.

You will support clients across a range of digital product, platform and service domains. The exact client context may vary from focused product teams to large international companies working on high-traffic, business‑critical services.

Many of our clients are technically mature and expect a high level of expertise from our consultants. This means you will need to be hands‑on, pragmatic and comfortable helping both the client and the team make good technical decisions.

Your daily tasks may include:

• Building and improving modern web applications, backend services, APIs and data models
• Working across frontend, backend and infrastructure depending on the needs of the client project
• Helping clients choose suitable technologies, architecture and delivery approaches
• Contributing to cloud environments, CI/CD pipelines, deployments and production quality
• Debugging, testing, monitoring and improving production‑grade systems
• Working on products or tooling related to customer‑facing services, internal platforms, identity, martech, customer support, analytics, online stores, integrations, developer tooling or SDKs
• Collaborating directly with client tech teams, business stakeholders, designers, product people and other disciplines
• Clarifying ambiguous requirements and turning them into working software
• Taking responsibility for delivery while making sure the team is supported and no one is left behind
• Using modern development practices, including openness to AI‑assisted development tools and workflows

To thrive in this position, you’ll need:

Must‑haves

• Strong experience in backend service development, for example with Node.js, Java, Kotlin, Scala, Clojure, Python or comparable technologies
• Experience building, shipping and improving production‑grade digital products
• Comfortable working across the full delivery lifecycle, from implementation to testing, deployment and production quality
• Understanding of cloud environments, CI/CD, deployments and how production systems are operated
• Ability to work directly with clients, stakeholders and other disciplines in a senior, consultative role
• Strong problem‑solving skills and the ability to bring clarity to ambiguous product or technical situations
• A hands‑on mindset — you are technically credible, actively contribute to the work and help the team move forward
• Fluent verbal and written English skills to collaborate in an international environment

We do not have a hard requirement around years of experience, but we have noticed that this level of fullstack, client‑facing and production ownership usually takes several years of professional experience to build.

Nice‑to‑haves

• Experience from customer‑facing digital products, online services, e‑commerce, subscriptions, internal platforms, analytics, martech or similar product domains
• Experience with high‑traffic or business‑critical production systems
• Deeper experience with platform engineering, infrastructure‑as‑code or DevOps practices
• Experience with customer‑facing products, internal tools, integrations, SDKs or developer tooling
• Familiarity with mobile development or React Native

Willingness to work in a hybrid setup. This means balancing office, client premises and remote work depending on the client project and team needs.

Benefits

At Reaktor Lisbon, our benefits and perks evolve with our community, and we’re always open to new ideas that will support the wellbeing of Reaktorians. Currently, we offer the following perks:

Tools

We offer everyone a top‑spec Apple MacBook and iPhone of their choosing to work with and use at work and home. If you need other tools, like a keyboard or a mouse, we’ll figure it out, too!

Phone & internet

To keep you connected, we’ll cover an unlimited phone plan – and a proper internet connection to your home.

Meal allowance benefit

We’ve partnered with Coverflex to offer you an electronic meal voucher that can be used in restaurants, supermarkets, and other places that serve food.

Health insurance

We have you covered through Médis, which is managed by Coverflex.

Mental health support

In addition to Reaktor’s own Hug team helping out wherever needed, we’ve partnered with OpenUp to connect you with certified psychologists should you ever feel like it.

Monthly flexible benefit

Want to invest in professional training or into your fitness? Need child care support, or a bit more in your health coverage? We offer a monthly flexible benefit you can use into what ever best supports you in the moment.

We're an equal opportunity employer

All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.