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Senior Full Stack Developer (Python + React)

Indeed

Company

Job typeFull-time
Workplace typeRemote
Experience levelMore than 10 years
Education levelBachelor's Degree

Description

**Your opportunity at 3S Checkout has arrived!** If you're looking to transform your career and join a team that values innovation, collaboration, and continuous development, this is the ideal chance! We are seeking professionals who bring experience, passion, and a strong desire to grow. If you possess knowledge of the dynamics and particularities of the Retail, POS (Point of Sale), and Food Service sectors, **now is your time to shine**. **Responsibilities and duties** * Deliver features end-to-end: understanding specifications, development, quality assurance, and production stability. * Coordinate deliveries involving multiple teams, ensuring integration and proper functioning of the entire system. * Work toward high-level objectives by planning, organizing, and executing the path to delivery. * Independently design scalable, cost-optimized solutions without unnecessary complexity. * Produce clean, maintainable code with consistent quality. * Make pragmatic architectural decisions, avoiding the creation of future problems. * Ensure alignment between documented specifications and implementation. * Critically assess specifications that lack technical sense, fail to meet intended goals, or present more efficient alternatives. * Continuously align with expected feature outcomes. * Technical leadership and team development. * Elevate technical proficiency through code reviews, mentoring, and dissemination of best practices. * Identify technical skill gaps, guide improvement efforts, and—when necessary—flag requirements for replacement. * Mandatory use of AI agents (Claude Code) as productivity multipliers. * Proficiency in CI/CD practices, automated testing, and production monitoring. **Requirements and qualifications** * Fluent English (reading, writing, and speaking). * Solid experience in software architecture, REST APIs, microservices, and integrations. * Proficiency in at least one general-purpose programming language and openness to working with * Python and JavaScript. * In-depth knowledge of relational databases: modeling, indexing, execution plans, joins, and performance analysis. Fundamentals matter more than specific tools. * Strong computer science foundation: data structures, algorithmic complexity, and trade-off analysis. * Knowledge of networking and protocols: HTTP/HTTPS, DNS, TCP/IP, sockets, TLS. * Concepts of distributed systems: CAP theorem, eventual consistency, partitioning, resilience, and fault tolerance. * Experience with Git, GitHub, and DevOps and CI/CD practices. * Knowledge of agile methodologies, quality assurance, and information security. **Desirable qualifications** * Experience with Food Service and POS solutions. * Experience integrating legacy systems and migrating to cloud environments. * Practical application of AI in development workflows and digital products. **Additional information** **Benefits: caring for you and your growth** **Meal allowance**: R$704.00 per month; **Life insurance**: fully covered by the company. **Health insurance**: 70% covered by the company based on employee’s age; for dependents under the Health Plan, 100% is borne by the employee, according to age. **Dental insurance**: fully covered by the company. **Transportation allowance (VT)**: provided as needed (deducted up to 6% of salary); **Birthday gift card** (freely usable balance). **Join a team that values your talent and potential in every way!** Come help us transform the restaurant customer experience across Brazil. Together, we’ll build an even more digital, practical, and innovative future! All our positions are open and inclusive for People with Disabilities (PCDs). **Do you see yourself here? Apply now and join our phenomenal team!** If you feel you don’t meet all the requirements for this position, we still encourage you to apply. We know that confidence gaps and imposter syndrome can prevent incredible people from landing their dream job—and we don’t want that to happen to you. Founded in 2006, 3S Checkout is a Brazilian technology company specializing in developing innovative enterprise management solutions, with a focus on retail. With a highly qualified team, we offer services ranging from retail-tailored solutions to the development and maintenance of fully customized web and mobile solutions. We work with large-scale clients, delivering comprehensive and innovative solutions. Commitment and agility in serving our clients drive everything we do. Certified by Great Place to Work (GPTW), we focus on developing our employees and believe that innovative actions are driven by innovative people—collaborative thinkers, intellectually curious, and with an owner’s mindset. Join the digital transformation journey with 3S Checkout

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Posted by

João Silva

Indeed · HR

Location

João Silva

Indeed · HR

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