Senior Fullstack Developer

Conexionhr; Buenos Aires; On-site; ARS 2,000,000 - 4,000,000; Full time

Job summary

Conexionhr is seeking a Senior Fullstack Developer to drive architectural decisions, mentor teams, and lead cross-functional initiatives. This role demands strategic technical leadership, strong collaboration with product and business stakeholders, and the ability to translate complex concepts into actionable plans.

You will define coding standards, oversee system design, and champion performance, security, and scalability across distributed services while aligning with business goals.

Qualifications

• 5+ years of experience in fullstack web development.
• Proven experience leading development teams and technical initiatives.
• Expert-level knowledge of multiple frontend and backend technologies.
• Strong understanding of software architecture, design patterns, and system design.
• Experience with microservices, distributed systems, and cloud-native architectures.
• Deep knowledge of performance optimization, security, and scalability principles.
• Experience with DevOps practices, CI/CD, and infrastructure as code.
• Excellent leadership, communication, and presentation skills.
• Business acumen with ability to translate technical concepts to stakeholders.

Responsibilities

• Create libraries of reusable components and design systems across products.
• Define development conventions, best practices, and enforce maintainability.
• Provide coaching and mentorship; oversee code reviews and builds.
• Generate refactoring strategies and assess risks and timelines.
• Architect scalable async systems and data interaction patterns.
• Lead performance optimization and SLA adherence across services.
• Define framework/library usage standards across the org.
• Guide responsive implementations and ensure pixel-perfection in UI.

Skills

Fullstack expertise

Team leadership

FrontendBackend tech

Architecture design

Microservices & cloud

Performance & security

DevOps & CI/CD

Leadership & communication

Business translation

Education

Bachelor's degree

Job description

Senior Fullstack Developer

Hoy

The Senior Fullstack Developer defines organization-wide development standards, leads architectural decisions, and drives technical excellence. This role encompasses team mentorship, cross-functional leadership, complex project coordination, strategic requirement refinement, and business impact advocacy while serving as a company culture role model.

Core Responsibilities

Strategic Technical Leadership

• ● Create libraries of reusable components, own and evolve design systems, and set development conventions.
• ● Define and enforce best practices, review pull requests for maintainability and quality, and challenge existing approaches.
• ● Provide coaching and technical mentorship, identify and address issues in code versioning, local execution, and builds.
• ● Generate refactoring strategies understanding impact, estimating execution time, and mitigating risks.
• ● Design operational plans and runbooks, capture metrics, define operational alerts, and maintain environment oversight.
• ● Define data interaction patterns and caching strategies, ensure integration tolerance and appropriate failure handling.
• ● Lead performance strategy, monitoring, and optimization with SLA understanding and tactical/strategic solutions.
• ● Define framework and library usage standards across the organization.
• ● Define testing strategies, review and enforce test coverage, and create maintainable tests that endure refactorings.
• ● Architect state management strategies and reusable patterns, identifying appropriate solutions for each case.
• ● Guide and review responsive implementations across projects, define layouts for different solution contexts.
• ● Review and improve team implementation, enforce pixel-perfection standards, and suggest design solutions.
• ● Define and enforce security standards, implement secure architecture, and ensure client compliance.
• ● Design and implement async communication APIs with monitoring, understanding load balancing and cache management.
• ● Apply schema evolution principles and compatibility modes, understand partitioning and message delivery semantics.
• ● Architect async systems at scale, monitor job queues and throughput, and establish operational standards.
• ● Define database strategy, handle replication, partitioning, and scaling while mentoring on optimization.
• ● Define scalable solutions and make critical architectural decisions.

Team Development & Mentorship

• ● Serve as a role model for company culture and help instill values in team members.
• ● Create opportunities for knowledge sharing through workshops and training sessions.
• ● Lead code reviews, mentor others, and ensure code quality standards across the organization.
• ● Identify compliance irregularities and contribute to strong compliance culture.
• ● Co-create implementation strategies, propose improvements, and orchestrate cross-team meetings.

Stakeholder Leadership & Communication

• ● Promote transparency culture and enrich communication quality across teams.
• ● Create opportunities to discuss issues, solutions, tools, and technologies in project contexts.
• ● Evaluate flow beyond specific tasks, assess scope of potential impacts, and provide proactive quality oversight.
• ● Optimize delivery processes including estimations, follow-up, and peer reviews.
• ● Drive estimation discussions, validate scope and effort for complex projects.
• ● Manage multiple urgent tasks without compromising quality while maintaining organization.
• ● Define documentation standards and practices, identify technical documentation needs.

Product & Business Strategy

• ● Act as business translator, advocating product decisions based on impact analysis.
• ● Refine and challenge requirements to enhance business value and ensure team alignment.
• ● Lead ideation of product improvements aligned with business and technical strategy.
• ● Discuss enhancement proposals directly with clients and stakeholders.

Technical Excellence & Innovation

• ● Define and implement development standards and best practices across the organization.
• ● Lead technical architecture decisions and participate in strategic technology choices.
• ● Continuously improve development processes, tools, and methodologies.
• ● Identify and drive improvement opportunities in technical infrastructure and practices.
• ● Establish quality gates and technical review processes.

Required Qualifications

• ● 5+ years of experience in fullstack web development.
• ● Proven experience leading development teams and technical initiatives.
• ● Expert-level knowledge of multiple frontend and backend technologies.
• ● Strong understanding of software architecture, design patterns, and system design.
• ● Experience with microservices, distributed systems, and cloud-native architectures.
• ● Deep knowledge of performance optimization, security, and scalability principles.
• ● Experience with DevOps practices, CI/CD, and infrastructure as code.
• ● Excellent leadership, communication, and presentation skills.
• ● Business acumen with ability to translate technical concepts to stakeholders.

Preferred Qualifications

• ● Bachelor’s degree in Computer Science, Engineering, or related field.
• ● Experience in technical leadership or management roles.
• ● Advanced certifications in cloud platforms or specific technologies.
• ● Experience with enterprise-scale application development.
• ● Knowledge of multiple technology stacks and architectural patterns.
• ● Experience with regulated industries and compliance requirements.
• ● Track record of process improvement and team development.
• ● Experience with agile transformation and technical strategy evolution.

Key Competencies

• ● Strategic thinking and technical vision development.
• ● Team mentorship and technical leadership.
• ● Cross-functional collaboration and influence.
• ● System architecture and technical decision-making.
• ● Stakeholder management and communication.
• ● Innovation and a continuous improvement mindset.
• ● Business impact assessment and technical advocacy.