ScrumLaunch

🚀 We're Hiring a Backend Developer (Ruby on Rails + NestJS)

🌎 Remote | ⚙️ Full-Time | 🧩 Complex Architecture | 🎥 Real-Time Features | Ukrainian speakers

We are building a fast-growing SaaS platform used daily by thousands of teams and organizations. It’s a highly technical product with real-time collaboration, heavy media operations, multi-workspace logic, and multiple integrations — and we’re looking for a Backend Developer who loves solving complex problems and scaling systems.

If you enjoy designing clean architectures, building high-performance APIs, and working on challenging backend problems across interconnected modules, this role is for you.

What You’ll Work On

• Designing and maintaining backend modules across a large multi-workspace SaaS system
• Developing and optimizing REST APIs and real-time WebSocket features
• Improving database schemas, performance, and indexing
• Implementing caching, pub/sub flows, and background processing with Redis
• Building backend logic for editors, media processing, and permission models
• Integrating third-party services: OAuth, social platforms, Stripe, AWS
• Writing clean, maintainable, well-tested code in Ruby on Rails and NestJS
• Ensuring system scalability, identifying bottlenecks, debugging production issues
• Collaborating with PMs, engineers, and cross-functional teams
• Contributing to architecture decisions and process improvements

Requirements

Hard Skills

• 2+ years of experience with Ruby on Rails (APIs, background jobs, scaling)
• 1+ year with TypeScript
• 1+ year with NestJS (modular architecture, DI, REST APIs)
• Hands-on experience with Prisma ORM
• Strong understanding of REST APIs, real-time flows, and WebSockets
• Experience with Socket.io
• Advanced knowledge of PostgreSQL (indexes, optimization, performance tuning)
• Experience with Redis (caching, pub/sub, rate limiting)
• Understanding of concurrency, distributed systems, race conditions
• Experience integrating third-party APIs (OAuth, rate limits, retries)
• Bonus: Stripe (payments, subscriptions), social media APIs, AWS (S3, Lambda)
• Ukraine Level: NATIVE

Soft Skills

• Strong attention to detail
• High sense of ownership and accountability
• Excellent communication and collaboration skills
• Ability to work independently and solve complex problems proactively
• Highly organized, able to manage multiple moving parts
• Ability to foresee risks and dependencies before implementation

Who Thrives in This Role

You love building high-impact features, care about clean architecture, and feel comfortable working in a product with a lot of moving parts, multiple integrations, and real-time dynamic behavior.

If you enjoy solving deep backend challenges, optimizing performance, and owning large pieces of the system — you will feel right at home.

We Offer

• Opportunities to work on diverse and challenging projects;
• Flexible working conditions;
• A supportive and collaborative team environment.
• 12 vacation days per year;
• 5 sick days per year;
• English classes.
• Access to psychologist support for mental well-being.

At ScrumLaunch, a global product development company partnering with fast-growing startups and established businesses, we’re looking for a Senior UI/UX Designer to join a fast-paced, product-driven environment.

You’ll take strong ownership of end-to-end design across B2B, B2C, and SaaS products. This role is ideal for someone with exceptional UI craft, strong UX thinking, and the ability to move fast without sacrificing quality.

• Location: Remote
• Ukrainian speakers preferred
• English: Upper-Intermediate (B2+)

• Occasional meetings up to 7–8 PM EST

   

Required Hard Skills

• 5–7+ years of professional experience in UI/UX or Product Design
• 5–7+ years designing B2B, B2C, or SaaS products
• Outstanding UI craft: layout, typography, spacing, visual hierarchy, interaction details
• Experience designing complex, data-driven systems with deep business logic
• Advanced proficiency with Figma and industry-standard design tools
• Hands-on experience building and maintaining design systems in production
• Ability to deliver developer-ready designs and specs with minimal iteration
• Practical experience using AI tools to speed up ideation, exploration, and delivery

• High attention to detail paired with strategic thinking

   

Required Soft Skills

• Comfortable in fast-moving, delivery-focused environments
• Strong ownership and accountability for design outcomes
• Clear communicator, able to align design, business, and engineering
• Highly adaptable with shifting priorities
• Proactive, well-organized, and naturally versatile across domains
• Able to balance creativity, practicality, and speed

 Responsibilities

• Design and deliver high-quality, creative UI/UX solutions with fast turnaround times
• Own design across web, mobile, and tablet platforms, including complex SaaS products
• Drive strong creative direction — not just execution of existing patterns
• Translate complex business logic into intuitive, scalable user experiences
• Rapidly prototype, explore multiple concepts, and iterate fast
• Build, evolve, and maintain design systems that enable speed
• Apply AI-powered workflows to increase design output and iteration velocity
• Work independently while collaborating closely with PMs, developers, and stakeholders
• Clearly articulate and defend design decisions using UX rationale, business impact, and constraints

• Ensure alignment with Apple HIG, Material Design, and accessibility standards

   

Tech Interview Note

Please be ready to present 2 strong case studies that demonstrate:

• Creative problem-solving
• Fast and effective delivery
• Strong UI quality
• Clear UX and business logic reasoning
• Measurable or tangible product impact

What We Offer

• Work on diverse and challenging products
• Supportive, collaborative team environment
• 12 vacation days per year
• 5 sick days per year
• English classes
• Access to therapist & psychologist support for mental well-being

🚀 Ruby on Rails Engineer (Remote, EU-based)

🌎 Remote | ⚙️ Full-Time | 🧩 Complex Architecture | 🎥 Real-Time Features
 

About the Role
 

We’re looking for a Senior Ruby on Rails Engineer to join a distributed product team building scalable, real-world applications used by thousands of users.

This is a backend-heavy Rails role with ownership, impact, and space to make technical decisions. You’ll work closely with product, design, and other engineers in an async-friendly, respectful environment.

If you enjoy clean Ruby, strong data models, background processing, and real production challenges, this role is for you.

What You’ll Do

• Build and maintain Ruby on Rails applications in production
• Design and optimize PostgreSQL schemas, queries, and indexes
• Develop reliable background jobs using Sidekiq & Redis
• Work with AWS S3 (ActiveStorage, direct uploads, streaming, multipart uploads)
• Design and test REST APIs (RSpec, request specs)
• Integrate with Stripe (payments, webhooks) and Twilio (messaging)
• Collaborate in code reviews and contribute to architectural decisions
• Take ownership of features from design to production

What We’re Looking For

Must-have

• 4+ years of professional Ruby on Rails experience
• Strong Ruby fundamentals
• Deep experience with ActiveRecord & PostgreSQL
• Experience with Sidekiq / Redis and resilient job design
• Solid knowledge of AWS S3 (ActiveStorage + aws-sdk-s3)
• API design & testing experience (RSpec)
• Clear communicator with a strong ownership mindset

Nice-to-have

• ActiveAdmin or similar admin frameworks
• Video/media processing (FFmpeg)
• ActionCable / WebSockets
• CDN & caching strategies
• Experience in healthcare, HIPAA, PII/PHI handling
• Experience with Heygen or similar media APIs

Why Join Us

• Fully remote — work from anywhere in the EU;
• Long-term product work (not short-term gigs);
• Strong engineering culture: clean code, ownership, trust;
• International team with experience working with Ukrainian engineers;
• Flexible contract or employment model;
• Competitive compensation based on experience.
  
  We Offer
• Opportunities to work on diverse and challenging projects;
• Flexible working conditions;
• A supportive and collaborative team environment.
• 12 vacation days per year;
• 5 sick days per year;
• English classes.
• Access to psychologist support for mental well-being.

Project is a sales intelligence platform that leverages AI to provide real-time coaching and insights during sales calls. Our platform helps sales professionals close more deals by providing instant hints, personality insights, and actionable recommendations during live conversations.

About the Role

We are seeking a skilled Full Stack Developer with a backend focus to join our team. You will primarily work on our Node.js backend that powers real-time meeting transcription, AI-driven coaching, and CRM integrations, while also contributing to our React frontend when needed.

Backend (Must Have - 2+ years)

- Node.js (Hapi.js) Backend Development – Strong proficiency in building scalable Node.js applications;

- PostgreSQL & ORMs – Experience with relational databases and Prisma ORM (or similar like TypeORM, Sequelize);

- Redis & Background Jobs – Working knowledge of Redis caching and job queue systems (Bull/BullMQ);

- RESTful API Design – Experience building well-documented REST APIs with proper validation;

- WebSockets (hapi-plugin-websocket) – Understanding of real-time communication patterns.

- Authentication – JWT-based authentication and authorization implementation;

- Git & Version Control – Proficient with Git workflows.

Frontend (Must Have - 1+ years):

- React + TypeScript – Strong proficiency with functional components, hooks (useState, useEffect, useCallback, useMemo, useRef), and custom hooks;

- Redux Toolkit – Experience with slices, async thunks (createAsyncThunk), and the dispatch pattern.

Backend Development

Core Development

- Develop and maintain REST APIs using the Hapi.js framework;

- Build and optimize AI-powered features using LangChain and multiple LLM providers;

- Implement and manage background job processing for async tasks (transcription analysis, hint generation, meeting summaries);

- Write clean, maintainable code following established patterns and best practices.

Integrations

- Integrate with third-party services (calendar providers, CRMs, transcription services);

- Maintain and extend existing integrations (Nylas, GoHighLevel, Recall.ai);

- Handle webhook implementations for real-time data synchronization.

Real-time Features

- Work with WebSocket connections for live meeting features;

- Implement real-time hint delivery during active calls;

- Build streaming responses for AI-generated content.

Database & Performance

- Design and optimize database schemas using Prisma;

- Implement efficient queries for complex data relationships;

- Work with vector embeddings for similarity search features.

Frontend Development

- Build and maintain React components with TypeScript;

- Implement state management using Redux Toolkit;

- Create responsive UI using Material UI components;

- Integrate with backend APIs and handle real-time WebSocket data;

- Implement form handling and validation;

- Build data visualizations using Chart.js.

Will be a plus:

Backend:

- Calendar API integrations (Nylas, Google Calendar API, Microsoft Graph);

- CRM integration experience (GoHighLevel, Salesforce, HubSpot);

- Speech-to-text services (Google Cloud Speech, Recall.ai, AssemblyAI);

- Third-party API integrations;

- Understanding of DISC personality assessment framework;

- Heroku deployment experience;

- Experience with real-time transcription processing.

Frontend:

- WebSocket – Real-time data streaming and connection management with reconnection logic;

- React Hook Form + Yup – Form handling with schema-based validation;

- React Router DOM - Declarative routing for React web applications;

- REST APIs – Axios with interceptors, error handling, and token refresh patterns;

- Material UI – Component customization and theming;

- SCSS/Sass – Component-scoped styling;

- Chart.js – Dynamic data visualization and custom plugins;

- Calendar integrations – Google Calendar, Outlook (Nylas);

- Third-party integrations – GoHighLevel (GHL), Symbl.ai;

- Browser APIs – BroadcastChannel, Audio API, LocalStorage patterns;

- Experience with Vite or modern build tools;

- React Toastify, Tippy.js, dnd-kit, day.js.

AI/ML Requirements

- LLM Integration – Experience integrating with OpenAI API and/or Anthropic Claude;

- LangChain Framework – Familiarity with LangChain for building AI-powered features;

- Vector Databases – Understanding of embeddings and vector search (pgvector, Qdrant, or Weaviate);

- Prompt Engineering – Ability to craft effective prompts for various AI tasks.

General

- Experience with sales/CRM platforms;

- Real-time application experience (WebSockets, Server-Sent Events);

- Familiarity with video conferencing integrations (Zoom, Google Meet, Teams);

- Background in SaaS products.

Benefits

- Opportunities to work on diverse and challenging projects;

- A supportive and collaborative team environment;

- 12 vacation days per year;

- 5 sick days per year;

- English classes;

- Access to therapist and psychologist support for mental well-being.