Software Engineer III – Mobile/Web

Location

Brazil

Posted

20 days ago

Salary

0

Seniority

Senior

Job Description

Software Engineer III – Mobile/Web

Stone & Company

• Develop and evolve features in our app using Kotlin Multiplatform / Compose Multiplatform (KMP/CMP) as the primary technology • Build and maintain webview initiatives, contributing to web development when a hypothesis-driven cycle requires that approach • Integrate REST APIs with a focus on contract, resilience, and observability from the start • Maintain disciplined contribution to a shared repository (monorepo or unified structure): coding conventions, code review, inline documentation, and CI/CD • Implement automated tests that validate the product end-to-end, not just isolated units • Use observability (logs, metrics, tracing) to monitor application health and drive investigations • Participate in the full delivery cycle: deployments, releases, and rollbacks • Actively participate in technical refinement, contributing to solution decisions from early phases • Work collaboratively with cross-functional teams (product, data, backend) • Contribute to the technical growth of more junior team members • Work with open or loosely defined scope with autonomy, proposing hypotheses and helping to structure solutions

Job Requirements

  • Experience with mobile development (Android native, Flutter, or KMP/CMP — a big plus if you already have KMP/CMP experience)
  • Familiarity with web development (HTML/CSS/JS, or frameworks such as React/Vue) — you don't need to be an expert, but you should be able to get things done
  • Strong experience integrating APIs (REST, authentication, error handling, performance)
  • Basic knowledge of systems architecture: how your app connects with the external world
  • Familiarity with observability tools and a monitoring-driven culture

Benefits

  • Health and Dental Plan
  • Vitta Digital Hospital: access to a multidisciplinary medical team, therapists, and a health team available 24/7 for quick and convenient care
  • Meal allowance and/or Grocery allowance
  • Remote allowance + Initial setup (exclusive to remote positions)
  • Flexible working hours
  • Education Benefit — internal platform with access to books, podcasts, training, and video lessons for self-development (Studa and the StoneCo Library)
  • Gympass
  • Childcare assistance
  • Profit Sharing (PLR)
  • Life Insurance
  • Transportation allowance (exclusive to on-site positions)

Related Job Pages

More Full-stack Engineer Jobs

Stratus logo

Principal Full Stack Engineer

Stratus

Built Around People. Driven by Outcomes. Designed for P&C Insurance.

Full TimeRemoteTeam 501-1,000Since 2001H1B Sponsor

• Collaborate with cross-functional teams to define, design, and ship new product surfaces emerging from Labs. • Drive architectural decisions and implementations for the team and the platforms it produces. • Design and build production-grade agentic workflows on top of what we ship. • Lead technical standards and best practices that impact multiple teams. • Mentor and guide engineers and influence engineering culture. • Make significant individual contributions to our SaaS product across both Azure and AWS. • Help modernize and consolidate legacy surfaces as integration touch points emerge. • Ensure the performance, quality, and responsiveness of customer-facing applications and the agentic systems built on top of them. • Implement and maintain modern automated testing practices, including evals for AI components. • Advocate for incremental delivery, consistently aligning with the practices of modern high-performing engineering teams.

United States
PlayOn! Sports logo

Staff Software Engineer, Growth

PlayOn! Sports

The nation's leading high school media company providing live streaming and digital ticketing services.

Full TimeRemoteTeam 201-500H1B No Sponsor

• Serve as the technical lead of the cross-functional product trio, owning technical strategy and driving feasibility assessments alongside PM and Design. • Set the architectural direction for how PlayOn runs subscription growth experiments across NFHS Network, GoFan, and MaxPreps. • Design, implement, and measure rapid experiments, iterating based on data to optimize conversion, retention, and engagement. • Build internal tooling and experiment scaffolding that compounds the pod’s velocity over time. • Leverage AI coding tools and agent-assisted workflows to accelerate experiment delivery and raise the quality bar for the pod. • Identify and drive resolution of cross-team technical dependencies when growth work requires coordination beyond the pod. • Mentor engineers on the pod through code and design reviews that move knowledge, not just catch bugs.

United States
sandan AI logo

Senior Full-Stack Developer / AI Engineer

sandan AI

Dream at human scale. Grow with AI. Building the leading growth platform for entrepreneurs of tomorrow. | eCom & SaaS

Full TimeRemoteTeam 11-50Since 2025H1B No Sponsor

Role Description Standort: Berlin / Remote (DACH-Zeitzone) Anstellung: Vollzeit, unbefristet Start: Ab sofort Sprache: Deutsch muttersprachler Niveau (C2 Level) - Entwicklung und Wartung unserer Full-Stack-Applikationen im modernen JavaScript-/TypeScript-Ökosystem - Konzeption und Umsetzung skalierbarer Backend-Services mit Node.js und Nest.js - Implementierung performanter Frontend-Lösungen mit React.js und Next.js - Design und Optimierung relationaler Datenbanken (PostgreSQL, MySQL, MS SQL) - Containerisierung und Orchestrierung von Services mittels Docker und Kubernetes - Entwicklung und Integration von REST-APIs - Aufbau und Betrieb von Data-Pipelines, Feature-Stores und ML-Workflows für unsere agentischen Systeme - Entwicklung, Training und Evaluation von Machine-Learning-Modellen für Marketing-Use-Cases (Attribution, Targeting, Forecasting, Anomaly Detection) - Implementation von Retrieval-Augmented-Generation-Pipelines (Embeddings, Vector Stores, Re-Ranking) - Aufsetzen und Pflegen von LLM-Evaluation-Frameworks, Prompt-Optimierung und systematischen Quality-Benchmarks - Anwendung von Code Harnesses (insbesondere Claude Code und Codex) im täglichen Entwicklungsprozess – von Planung über Implementation bis Code Review - Enge Zusammenarbeit mit dem Founding-Team an der Produktarchitektur agentischer Systeme Qualifications - Mehrjährige Berufserfahrung in der Full-Stack-Entwicklung - Fundierte Kenntnisse in TypeScript und JavaScript - Sicherer Umgang mit React.js, Next.js, Node.js und Nest.js - Erfahrung mit relationalen Datenbanken (PostgreSQL, MySQL, MS SQL) - Praxis in Container-Technologien (Docker, Kubernetes) - Vertraut mit REST-API-Design und Git-Workflows - Solide Python-Kenntnisse inklusive der gängigen Data-/ML-Stacks (pandas, NumPy, scikit-learn, PyTorch oder TensorFlow) - Erfahrung im End-to-End-Lebenszyklus von ML-Modellen: Datenaufbereitung, Feature Engineering, Training, Validation, Deployment, Monitoring - Verständnis statistischer Grundlagen (Hypothesentests, Regression, Klassifikation, Zeitreihen) - Erfahrung mit modernen LLM-Workflows: Prompt Engineering, RAG, Embeddings, Vector Databases (z.B. Pinecone, Weaviate, pgvector) - Praxis in der Modell-Evaluation: Metriken, Benchmarks, A/B-Testing, systematische Eval-Frameworks - Erfahrung mit Notebook-basierten Explorationen (Jupyter, Colab) sowie der Überführung in produktionsreife Pipelines - Kenntnisse in MLOps-Tools (z.B. MLflow, Weights & Biases, DVC) von Vorteil - Erfahrung mit Claude Code und/oder Codex ist sehr willkommen – ansonsten der klare Wille, sich aktiv darin einzuarbeiten Requirements - Sehr gute Deutsch- (C2) und Englischkenntnisse (mind. C1) - Echtes Interesse an generativer KI und agentischen Systemen - Builder-Mentalität: Du lieferst Production-Software, nicht nur Prototypen - Analytisches Mindset: Du triffst Entscheidungen datengetrieben und kannst Modellverhalten kritisch hinterfragen Benefits - Eine prägende Rolle in einem AI-Native-Startup mit klarem Enterprise-Fokus - Wettbewerbsfähiges Gehalt sowie Beteiligungsprogramm (ESOP) - Vollständig finanzierter Zugang zu allen relevanten Code Harnesses, LLM-APIs und Developer-Tools (Claude Max, Codex, GitHub Copilot etc.) - Compute-Budget für Experimente, Modell-Training und ML-Workloads - Modernes Hardware-Setup (MacBook Pro nach Wahl) - Flexible Arbeitszeiten und Remote-Optionen - Office in Berlin sowie Standort Dubai (DIFC AI Campus) - Steile Lernkurve im Bereich Agentic AI, LLM-Orchestrierung und AI-native Engineering

DACH
Job Closed
decircle logo

Software Engineer – Compilers, Virtual Machines

decircle

Talent Partner for decentralized organizations and projects that are building Web3.

Full TimeRemoteTeam 1-10Since 2019H1B No Sponsor

• The role is part of the Smart Contracts team which is responsible for supporting the execution of smart contracts on Polkadot. • This ranges from low level software like PolkaVM and revive to our smart contract execution environment.

Switzerland
Job Closed