• Design, develop, and maintain scalable backend services and APIs with a strong focus on performance, reliability, and security. • Build and optimize data-intensive backend processes, including complex queries, aggregations, and third-party integrations. • Develop and maintain React and Next.js frontend interfaces, with emphasis on data-heavy components such as dashboards, tables, and visualizations. • Collaborate with cross-functional teams to define, build, and ship product features across the full stack. • Design and implement GraphQL and REST APIs, ensuring efficient data handling and seamless frontend integration. • Write clean, maintainable, and well-tested code before submitting pull requests, upholding high code quality standards. • Identify and resolve blockers proactively, communicating progress and risks clearly to stakeholders. • Navigate ambiguous requirements by making informed architectural decisions and validating assumptions with the team. • Participate in technical discussions and contribute to both backend and frontend architecture decisions. • Manage tasks effectively within a Kanban workflow.

• Work on various digital products within the product portfolio • Develop new features together with the development team and UX/UI • Create technical concepts in collaboration with other developers • Further develop infrastructure to be scalable, stable, secure, high-performing and flexible

Role Description We are seeking a skilled AI-Native Full Stack JavaScript Engineer for a placement opportunity with a fast-growing US-based startup. This is a remote role requiring full working-hour overlap with US time zones (EST/CST/PST depending on the client team). You will work directly with the startup’s engineering and product teams to build, scale, and maintain modern web and mobile applications. This is a hands-on role suited for engineers who thrive in startup environments, enjoy ownership, and can operate with high accountability and autonomy. What You'll Do - Build and maintain full-stack web and mobile applications using React.js, Next.js, Remix, React Native, and TypeScript - Architect, develop, and optimize backend APIs and services using Node.js, Express.js, NestJS, Fastify, and GraphQL - Design reusable, scalable React component systems - Integrate third-party APIs and services (e.g., Stripe, Plaid, Mapbox, DocuSign, Stytch, etc.) - Design and manage relational databases (PostgreSQL, AWS Aurora) and caching systems (Redis) - Contribute to cloud-based deployments (AWS ECS/Fargate, S3, Load Balancers, etc.) - Participate in CI/CD automation workflows (GitHub Actions, Vercel, AWS pipelines, Fastlane, Expo EAS) - Support secure authentication and authorization flows (Auth0, Firebase, custom JWT flows) - Collaborate in sprint planning, code reviews, and architectural discussions - Write clean, maintainable, secure, and well-tested code - Contribute to documentation and technical decision-making processes Qualifications - 4–6 years of professional experience in software engineering - Strong expertise in JavaScript and TypeScript - Deep experience with React, Next.js, Remix, and/or React Native - Solid backend development experience with Node.js ecosystems - Strong database knowledge (PostgreSQL, Aurora, Redis) - Experience working with cloud infrastructure (AWS preferred; Azure/GCP acceptable) - Familiarity with GraphQL - Familiarity with Docker and containerized environments - Experience integrating third-party APIs and payment providers - Experience integrating AI APIs (OpenAI or similar platforms) - Strong understanding of application security and performance optimization - Excellent written and verbal English communication skills - Ability to work fully aligned with US business hours Preferred / Nice to Have - Experience in startup environments - Exposure to CI/CD optimization and DevOps practices - Experience working in distributed, remote-first teams Requirements - 100% availability during US working hours - Reliable high-speed internet connection - Ability to operate independently in a fast-paced startup environment - Strong sense of ownership and accountability Compensation - Hourly compensation - Top market rates in USD (~$20/hour) - Full-time hours expected (40 hours/week) - Remote contract engagement Company Description Type B Digital is a forward-thinking consulting firm focused on designing and developing innovative software solutions that elevate user experiences and drive measurable business impact. Our multidisciplinary team brings together creativity, engineering excellence, and strategic insight to deliver digital products our clients love. We’re expanding our engineering team and seeking a Full Stack JavaScript Engineer who thrives on building secure, scalable, and modern AI-first web and mobile applications.

Role Description We're a lean, high-agency team. Engineers here own real scope: there's no large org to absorb the slack, and the decisions you make show up directly in the product. That also means we move fast and expect people to operate with a high degree of autonomy. We actively lean into AI-assisted development as a way to keep overhead low and give every engineer more leverage. That's not specific to any one role, it's how we work. We expect engineers to experiment with AI tools, integrate them into their own workflows, and share what works. A lot of what makes us effective is how we work, and there's meaningful room to improve. If you write solid backend systems, take ownership seriously, and want to work in an environment where your contributions have a real impact, this is it. What You'll Own - Design and own backend architecture for core Solana Mobile services: dApp Store APIs, wallet services backend, device registry, event tracking, and on-chain activity systems (staking and related infrastructure) - Build and maintain REST and WebSocket APIs consumed by Android, Flutter, and Web clients, as well as third-party developers integrating the Solana Mobile Stack - Own your services in production: participate in on-call rotation, author runbooks, contribute to post-mortems, and close the loop on action items - Look for friction in your own work and in the team's processes: automate what makes sense, build small tools that save repeated effort, and share what you build - Contribute to CI/CD reliability and build infrastructure (GitHub Actions, WarpBuild) with a sharp eye on pipeline speed, cost, and reproducibility - Conduct thorough code reviews, contribute to technical discussions, initiate RFC discussions for significant changes, and help the team get better over time - Drive infrastructure decisions on AWS (ECS, RDS, Lambda, SQS, CloudFront) — from architecture through to cost-conscious production operation - Own the observability stack: structured logging (Loki), metrics and alerting (Prometheus, Grafana Unified Alerting), distributed tracing, and incident response runbooks - Contribute to backend architecture for device attestation and the Seed Vault integration layer, including on-chain verification flows (Squads Protocol multisig, SPL token operations) - Collaborate with mobile engineers (Android/Kotlin, Flutter/Dart) to design mobile-first API patterns — offline resilience, background sync, efficient payloads for constrained networks - Work closely with Protocol Engineers, building Solana programs to design off-chain services that compose cleanly with on-chain logic Qualifications - 5+ years of professional backend engineering, with a track record of owning and operating production services - High ownership: you take problems end-to-end and drive them to resolution without waiting for direction - Proactive by default: you identify issues early, propose solutions, and move quickly - You already use AI coding tools (Claude Code, Cursor, Copilot) as part of how you work: not as a novelty, but because they make you faster and you've figured out when to trust them - Strong proficiency in TypeScript/Node.js and/or Rust — idiomatic, well-tested, production-grade code - Solid command of PostgreSQL: schema design, query optimization, indexing, migration discipline - Good working knowledge of Redis: caching patterns, pub/sub, TTL strategies - Hands-on AWS experience: ECS, RDS, SQS, S3, Lambda — comfortable deploying and operating services in a cloud environment - Sound understanding of distributed systems: idempotency, eventual consistency, fault tolerance, graceful degradation - Security-aware: secrets management (AWS Secrets Manager / SSM), API auth patterns (JWT, OAuth2), OWASP hygiene - Comfortable with Docker and containerized deployments Bonus Points - Familiarity with the Solana ecosystem: RPC node interaction, on-chain program invocation, SPL tokens, wallet adapter patterns, or indexer design - Experience working closely with external developers or ecosystem partners: debugging integrations, reviewing SDK usage, or shaping APIs based on real developer feedback - You've built small automation scripts, internal tooling, or LLM-integrated workflows that saved real time, for yourself or your team - Experience building backends for mobile-native products (push notifications, storefront APIs, device attestation, background job orchestration) - Contributions to open-source backend libraries, developer tooling, or the Solana ecosystem - Prior experience in a senior or tech lead capacity: driving cross-team alignment, writing technical specs, owning a domain end-to-end Our Stack - TypeScript - Rust - Node.js - PostgreSQL - Redis - AWS (ECS, RDS, Lambda, SQS, S3) - Docker - GitHub Actions - WarpBuild - Grafana - Prometheus - Loki - Solana Web3.js - Squads Protocol - SPL - AWS Secrets Manager - Android/Kotlin - Flutter/Dart