• Help train large-language models (LLMs) to write production-grade code • Compare & rank multiple code snippets, explaining which is best and why • Repair & refactor AI-generated code for correctness, efficiency, and style • Inject feedback into the RLHF pipeline and maintain smooth operation

• Drive **developer experience and system health metrics** across revex vertical and ensure compliance to latest standards across the organization. • Drive measurable improvements in developer productivity, system reliability, observability, and deployment speed across **35+ frontend and 100+ backend services & workers.** • **Explore and adopt modern tools, including AI-powered solutions, to accelerate development and reduce repetitive work.** • Identify **recurring pain points, bottlenecks, and repetitive work** across engineering teams, then design and deliver scalable solutions that eliminate them permanently. • Solve complex **UI performance and reactivity issues** to deliver fast, consistent user experiences at scale. • Define and enforce **engineering standards and best practices** across the organization and revex vertical. • Continuously **improve CI/CD pipelines, testing, monitoring, alerting, and overall** developer experience. • Mentor engineers, lead architecture discussions, conduct code reviews, and foster technical excellence and ownership. • Proactively identify and solve **performance bottlenecks, scalability challenges, and security concerns** in a multi-tenant environment.

• Drive the development, testing, documentation, and deployment of high-quality, stable, scalable software into production • Develop a comprehensive understanding of the industry, product, and roadmap, leveraging this knowledge to shape team strategy and influence the direction of the organization • Lead the end-to-end technical execution of complex features and systems, from ideation and architecture to deployment and refinement • Align and streamline designs across your department, promoting clarity and simplicity in technical direction while upholding organizational goals. • Partner closely with product, design, and other stakeholders to make high-impact technical decisions that align with both business goals and long-term scalability • Lead incident resolution as part of the on-call rotation, ensuring swift diagnosis and remediation of critical software issues • Proactively identify and remove roadblocks, occasionally collaborating cross-team collaboration to maintain momentum on complex projects • Conduct and elevate code reviews, sharing expertise to enhance code quality • Steer team planning and design discussions, introducing innovative approaches to solve technical challenges and optimize design patterns • Champion improvements to software quality, testability, operational metrics, and team documentation, setting a higher standard for the organization • Mentor and coach engineers at all levels, fostering a culture of continuous learning and professional growth across the team

Role Description The Recommendation Cross-Channel & Offsite Discovery team is new and looking for a Senior Fullstack Engineer who will help us build our Customer Dashboard interface for customers to easily manage their marketing campaigns. Responsibilities - Implement New Features: Develop customer dashboard features using TypeScript and React. These features will interact with our backend services, which are built with Python and FastAPI. - Innovate and Strategize: Participate in brainstorming sessions to develop new features and tools that will shape the future of Offsite Discovery. - Collaborate on Functionality: Work with both technical and non-technical business partners to develop and update application functionalities. - Communicate with Stakeholders: Keep stakeholders, both inside and outside the team, informed about project progress and developments. Qualifications - Strong foundation with client-side JavaScript, computer science background & familiarity with networking principles. - Solid experience with TypeScript and frontend frameworks like React. - Experience building, maintaining, and debugging full-stack web applications. - Experience with Python and one of the backend frameworks like FastAPI, Flask or Django, or willingness to learn and work with this stack. - Good understanding of API design principles. - Familiarity with Service-Oriented Architecture (SOA). - Experience with relational databases, distributed systems, and caching solutions (MySQL/PostgreSQL). - Analytical skills and experience with SQL to gather insights into dashboard reports and solutions (ClickHouse, Athena). - Experience with any of the major public cloud service providers: AWS, Azure, GCP. - Experience collaborating in cross-functional teams. - Excellent English communication skills. - Must be located within or near the WET timezone (e.g., Germany, Portugal) and available to work core business hours approximately 9:00 AM – 6:00 PM WET. Nice to Have - Familiarity with serverless design patterns, particularly with AWS Lambda. - Experience working in remote environments. Benefits - Unlimited vacation time - we strongly encourage all of our employees take at least 3 weeks per year. - Fully remote team - choose where you live. - Work from home stipend! We want you to have the resources you need to set up your home office. - Apple laptops provided for new employees. - Training and development budget for every employee, refreshed each year. - Maternity & Paternity leave for qualified employees. - Work with smart people who will help you grow and make a meaningful impact. - This position has a base salary range between $80k and $120k USD. - Regular team offsites to connect and collaborate. Company Description At Constructor.io we are committed to cultivating a work environment that is diverse, equitable, and inclusive. As an equal opportunity employer, we welcome individuals of all backgrounds and provide equal opportunities to all applicants regardless of their education, diversity of opinion, race, color, religion, gender, gender expression, sexual orientation, national origin, genetics, disability, age, veteran status or affiliation in any other protected group. Studies have shown that women and people of color may be less likely to apply for jobs unless they meet every one of the qualifications listed. Our primary interest is in finding the best candidate for the job. We encourage you to apply even if you don’t meet all of our listed qualifications.