We’re looking for a Frontend Research Engineer who’s passionate about building great developer experiences and products. In this role, you’ll design and build core parts of our frontend in React and TypeScript, creating fast, intuitive UIs tailored for technical users. You’ll join a small, senior team working at the intersection of AI, cybersecurity, and developer experience—where your decisions will shape the product.

As a Mid-Level Java Developer, you will contribute to the design, development, and maintenance of scalable backend systems using Java and modern frameworks. Collaborating with cross-functional teams, you will ensure robust, efficient, and high-performing solutions aligned with CI&T’s commitment to innovation and transformation.

Lead the design and architecture of backend services that power real-time model inference and bidding decisions for our OpenRTB platform. Collaborate with data scientists and machine learning engineers to deploy, monitor, and optimize ML models that influence real-time bidding strategies, pricing decisions, and targeting. Oversee the development of A/B testing frameworks and ensure the seamless integration of experimentation tools into our platform.

Our Software Architects are “hands-on” problem solvers who coach our engineers on code organization, technical debt solving and big features implementation. They are accountable for leading tech roadmaps (performance scalability, security…), experiment new technologies, make PoCs and make sure our architecture remains a reference in the SaaS industry. This is a unique opportunity to work with complex and cross-cutting challenges.

Looking for an experienced and versatile Senior Java software engineer to be part of technology department and contribute to the creation of the next generation of bespoke software platform, working closely with business units and the wider tech team to deliver efficient digital processes for a global 24x7 operation and maintain/develop systems to continuously deliver new features and improvements.

You'll be at the forefront of creating autonomous systems that can reason, plan, and execute actions to solve real-world problems. Design and implement AI agent architectures that can understand user requests, reason through complex problems, and execute multi-step plans.

You will join the Nimbus team but work closely with Nomos to consume and provide feedback on specifications, ensuring a deep understanding of both projects. You will develop a deep understanding of Nimbus and Nomos, including their architectures and designs. Consume specifications from Nomos and provide feedback where necessary, clarifying any ambiguities. Collaborate with the Nimbus team to identify potential issues or areas for improvement in the specifications.

Calendly is seeking a Staff Full Stack Engineer with strong technical competency and distributed systems experience, who enjoys solving complex problems with a results driven mindset, and fosters a strong sense of ownership and operational excellence. You will report to one of the Engineering Managers in our Scheduling group and will be at the forefront of building a best-in-class contact management and scheduling experience.

Collaborate closely with fellow engineers to architect and implement services required to back OneSignal’s product offerings. Help optimize a scaling strategy for our high performance Postgres and Scylla clusters. Design and optimize schemas, queries, indices, caches and more across Postgres and Scylla. Actively participate in peer code reviews and Technical Design Spec reviews, providing valuable technical insights to continuously improve our code base.

The Architect Squad profile at 2Brains is to guarantee compliance with architecture principles within the team, leading the definition and development of scalable, secure technological solutions aligned with enterprise architecture best practices. Accountable for the alignment with the organization's technological strategies, implementing a Security First Mindset, and designing microservices and APIs REST architectures.