Mid-Level FullStack Developer

Blip is a leading tech company focused on software engineering solutions for sports entertainment. 

We operate at scale. As part of Flutter Entertainment, we play an essential role in the Group's goal of becoming the global leader in online sports betting and iGaming, developing innovative products and platforms for over 14 million monthly customers worldwide. 

We are serious about Tech. We are problem-solvers with big ambitions, keeping a people-first mindset at the core of our work. We prioritize flexibility as we strive to deliver the best technological products and tackle the greatest industry challenges. 

Recognizing that everyone brings their strengths, backgrounds and new perspectives, we empower you to be yourself. That uniqueness shapes the culture of belonging we are so proud of.

The Role
Flutter Functions Global Sportsbook & Trading (GST) aims to empower Flutter brands to shape the future of sports betting by helping to drive their success and growth.

With over 400 colleagues working in roles across trading, operations, product, delivery, architecture and engineering, and by partnering closely with more than 1,100 people in the wider global trading and sportsbook community at Flutter, GST's Mission intends to raise the bar to be #1 on all sports; share Flutter's most innovative sportsbook products globally; transform Risk & Trading operations, unleashing the power of data; co-create the next generation sportsbook and build a culture of inclusion, innovation, personal growth and leadership excellence.

As a Mid-Level Full Stack Developer, you will focus on building high-quality frontend experiences while working on the Backend-for-Frontend (BFF) layer, integrating REST APIs and event-driven architectures. You will analyze requirements, and design, develop, test, and maintain scalable React (TypeScript) applications while ensuring seamless integration with backend services through an API Gateway.

You will be part of an agile development team, reporting to an Engineering Manager, and working closely with other developers, QAs, and Product Owners to continuously evolve our products.

What You'll Be Doing

Frontend Development (React & TypeScript)

• Develop and maintain React applications using TypeScript, ensuring performance, scalability, and reusability.

• Implement state management.

• Optimize performance through lazy loading, memoization, and rendering strategies.

• Write unit tests (Jest, Vitest, React Testing Library) and E2E tests (Cypress and Playwright).

Backend-for-Frontend (BFF) & API Integration

• Develop and maintain the BFF layer that interacts with backend services via REST APIs and streaming architectures.

• Work with API Gateways (e.g., AWS API Gateway, Kong, Apigee) to manage API requests.

• Implement caching strategies, request aggregation and API optimizations.

• Ensure secure API communication using OAuth2, JWT, and best API security practices.

Streaming & Event-Driven Architecture

• Integrate real-time data streams using Kafka, WebSockets, or event-driven frameworks.

• Implement event-driven features to enhance real-time interactions and scalability.

Collaboration & Best Practices

• Work within an agile team with short iterations and frequent releases.

• Contribute to technical decisions regarding frontend architecture, API integrations, and BFF design.

• Keep the technical documentation up to date.

• Provide mentorship and technical guidance to peers.
   

What You'll Bring

Technical Skills

• Frontend: React, TypeScript.

• Backend-for-Frontend (BFF): Node.js, Express/NestJS, API Gateway (AWS API Gateway, Kong, Apigee).

• APIs & Streaming: REST, WebSockets, Kafka, Pulsar (nice to have), gRPC (nice to have).

• Testing & Quality: Jest, Vitest, React Testing Library, Cypress/Playwright.

• DevOps & CI/CD: Docker, Kubernetes, CI/CD pipelines (GitHub Actions, GitLab CI/CD).

• Security: OAuth2, JWT, API security best practices.

Soft Skills

• Experience working in agile methodologies.

• Strong problem-solving mindset and ability to work autonomously.

• Good communication skills, with the ability to interact effectively with cross-functional teams.

• Passion for building great consumer products and improving user experience.

• Flexibility and adaptability to changing priorities and fast-paced environments.

Nice to Have

• Experience with Micro Frontends.

• Knowledge of server-side rendering (SSR) and static site generation (SSG).

• Familiarity with infrastructure as code (Terraform, AWS CDK).

• Hands-on experience with observability tools (Datadog, Prometheus, Grafana).

• Experience with Protobuf conversion to/from JSON.

So ... are you in?   

Equal opportunities 

At Blip, we are committed to creating a diverse and inclusive workplace. We strongly encourage people from all backgrounds,  ways of thinking and working to apply. 
We are committed to including everyone regardless of their race, disability, age, gender identity, sexual orientation, and religion.  

Everyone brings different perspectives and experiences ; you don’t have to meet all the requirements listed to apply for this role.