Jobs Fullstack

We’re looking for an experienced Full-Stack Developer who would help us reach the next level! If you are optimistic about managing full-stack development of web applications and websites and desire to have the opportunity to participate in a variety of projects with various back-end and front-end stacks - this opportunity is exactly what you are looking for.

Responsibilities:

• Participate in the entire application lifecycle, focusing on coding and debugging;
• Write clean code to develop functional web applications;
• Troubleshoot and debug applications;
• Perform UI tests to optimize performance;
• Manage technologies to improve legacy applications;
• Collaborate with Front-end developers to integrate user-facing elements with server-side logic;
• Gather and address technical and design requirements;
• Provide support to internal teams;
• Build reusable code and libraries for future use;
• Liaise with developers, designers, and system administrators to identify new features.

Qualifications

• At least 7 years working as a Full Stack Developer with a primary focus on the Back-End;
• 2-3 years of experience in the digital advertising ecosystem and at least 1 year of experience in Ad-tech;
• Experience with Client-side frameworks, preferably ReactJS;
• Experience with Server-side development in PHP(Laravel)/Python;
• Experience with databases PostgreSQL/MySQL, Redis;
• Experience with Git source control;
• Experience with production deployments, DevOps, and CI/CD;
• Passion for code craftsmanship;
• Attention to detail, organization, and multitasking;
• Excellent analytical and time management skills;
• Teamwork skills with a problem-solving attitude;
• Good command of English language.

Why do we enjoy working here?

• A young and driven team of professionals who are willing to grow and bring value.
• People-centric culture.
• L&D - support your need to replenish your knowledge and acquire new skills to do your job better via paid Professional training & e-learning courses.
• Flexible working schedule. We don’t use any time-tracker. We opt for performance.

We are looking for a skilled and driven Senior Full Stack Software Engineer to join our growing team. 

In this role, you’ll join a team of engineers ranging from junior to senior, a group of experienced hands-on engineering managers, and a range of other team members all focused on one thing - providing a world-class educational experience to students from all walks of life.

 Responsibilities:

• Design, develop, and maintain scalable and reliable web applications using C# and Vue.js
• Collaborate with product and engineering managers, stakeholders, and other teams to scope, prioritize, and deliver value adding features to our consumers
• Write clean and testable code
• Lead and mentor more junior developers in code quality, clean architecture, and best practices

You may be a good fit if you have (requirements):

• 6+ years of professional software development experience
• Proficient (2+ years experience) in each of the following, with senior-level expertise in at least one:
  • Modern C#/.NET
  • Vue.js (or similar reactive frameworks, e.g. React, Angular)
  • CSS and modern front-end styling practices
  • Database technologies
• Experience leading complex engineering initiative design and execution
• Strong clean coding experience (maintainability, flexibility, extensibility, reliability)
• Strong communication skills and experience giving and receiving code reviews
• Experience with version control systems
• Experience mentoring other developers, formally or informally

What Makes You Stand Out (nice-to-haves)

• University degree in Software Engineering or related field
• Experience with GCP, GKE, GCS (or similar cloud technologies)
• Experience with PostgreSQL
• Familiarity with DevOps (CI/CD pipelines, K8s, Helm, Argo CD, Terraform)
• Experience with Application Security, SecOps, Cloud Security, or similar
• Experience with migration patterns (strangler-fig, dual-write, CDC, etc)
• Experience with rollout strategies (blue-green, canary, phased)
  
   

Qualities that will make you successful:

• Strong interpersonal and communication skills;
• Ability to work collaboratively in a remote environment;
• Growth mindset and motivated by constructive feedback;
• Proven ability to work independently, manage schedules, and meet deadlines;
• Passion for education and building solutions that support students and educators.

Requirements:

• 1–3 years of commercial development experience;
• Strong knowledge of JavaScript and TypeScript;
• Experience with Node.js and/or Bun.js;
• Experience with Vue.js is preferred; React is also acceptable;
• Good understanding of full-stack web application development;
• Understanding of WebSockets and real-time communication;
• Experience working with PostgreSQL;
• Good understanding of asynchronous programming;
• Confident working with the Git version control system;
• Strong analytical and problem-solving skills;
• Intermediate level of English.

Would be a plus:

• Experience with modern backend architecture and API design;
• Experience working with ORMs or query builders;
• Familiarity with deployment, CI/CD, and cloud environments;
• Experience building scalable products or SaaS platforms.
• Experience using AI tools for coding to improve productivity;

Responsibilities:

• Develop and maintain full-stack product features with attention to quality and performance;
• Participate in end-to-end development, from idea to production;
• Build both backend and frontend parts of the application;
• Work with real-time features using WebSockets;
• Deliver features quickly and efficiently.

About the client:

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

Responsibilities:

• Continue the evolution and scaling of our freshly released, native ChatGPT apps and custom MCP integrations.
• Develop and maintain high-traffic, public-facing interfaces hosted on AWS modern cloud infrastructure.
• Work heavily with AI agents (Claude Code, ChatGPT/Codex) to maintain and extend a codebase 
• Operate with full team autonomy, collaborating closely with the Engineering Manager in a "co-author" environment.
• Follow the "you-build-it-you-own-it" philosophy, taking full responsibility for the SDLC and production readiness.
• Explore and implement emerging AI frameworks and technologies to keep the product at the forefront of the GenAI market.

Requirements:

• 7+ years of experience developing reliable, highly available, and scalable software systems.
• Strong experience working with AI agents (Claude Code, ChatGPT/Codex) to maintain and extend a codebase
• Strong proficiency with backend development using Node.js / Java/ .Net and TypeScript.
• Deep experience with Model Context Protocols (MCP).
• Proven track record of using AI tooling (ChatGPT, Codex, Claude Code) for rapid operator-driven development.
• Hands-on experience with modern cloud infrastructures, specifically AWS, Terraform, and Docker.
• Strong proficiency with frontend development (HTML, CSS, JavaScript) and component-based SSR frameworks like Next.js or React.
• Experience with SQL and NoSQL datastores, as well as developing in service-based API environments.
• Strong understanding of software architecture, design patterns, and clean code principles.
• A modern, energetic mindset with critical thinking and systemic vision skills, the ability to work independently and take high-level ownership.
• Experience with formal CI/CD pipelines and monitoring services.
• Upper-intermediate English level.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

We are looking for a senior full-stack engineer with proven experience in AI-powered document workflows.

Requirements

• 5+ years of software development experience
• Hands-on experience building production-grade AI document pipelines — not just LLM API integration, but full pipeline design and reliability
• Comfortable working with legal/commercial document structures — contracts, agreements, leases — at a level where no explanation of the basics is needed
• Experience with PDF processing: extraction, parsing, classification at scale
• Comfortable in fast-moving, small-team environments with high autonomy

• Familiarity with AI-assisted development tools (Claude Code, Cursor, or similar)

   

• Nice to Have
  Direct experience in real estate tech or legal tech products
  E-signature or document execution workflow experience
  Background in deal or transaction management platforms

Key Responsibilities

• Build AI pipelines to ingest and process document knowledge bases (regulations, contract templates, legal frameworks) and generate structured rules and logic
• Develop document understanding features: summarization, classification, party identification, payment terms, key dates, and required actions from uploaded PDFs
• Implement document state analysis — execution status detection, document categorization, follow-up identification
• Contribute across the deal intelligence stack: contract creation, e-signing workflows, payment triggers, file management, and compliance tracking
• Work autonomously and communicate proactively — own features end-to-end

Required Tech Stack

• Next.js / React — primary framework (frontend and API)
• Python — basic understanding
• Supabase — database and authentication
• Vercel — deployment infrastructure
• Claude API (Anthropic) — AI layer; strong prompt engineering skills required
• TypeScript — used throughout the codebase

Requirements:

• 1–3 years of commercial development experience;
• Strong knowledge of JavaScript and TypeScript;
• Experience with Node.js and/or Bun.js;
• Experience with Vue.js is preferred; React is also acceptable;
• Good understanding of full-stack web application development;
• Understanding of WebSockets and real-time communication;
• Experience working with PostgreSQL;
• Good understanding of asynchronous programming;
• Confident working with the Git version control system;
• Strong analytical and problem-solving skills;
• Intermediate level of English.

Would be a plus:

• Experience with modern backend architecture and API design;
• Experience working with ORMs or query builders;
• Familiarity with deployment, CI/CD, and cloud environments;
• Experience building scalable products or SaaS platforms.
• Experience using AI tools for coding to improve productivity;

Responsibilities:

• Develop and maintain full-stack product features with attention to quality and performance;
• Participate in end-to-end development, from idea to production;
• Build both backend and frontend parts of the application;
• Work with real-time features using WebSockets;
• Deliver features quickly and efficiently;

On behalf of our Client from Israel, Mobilunity is looking for a Senior Full-Stack Engineer on full-time engagement.

Our Client is developing a SaaS platform that evaluates how brands perform across LLMs and provides actionable insights to improve visibility and performance.

The system includes:
A user-facing SaaS platform (customer dashboard, insights, reporting) A data processing backend that interacts with multiple LLMs to generate analysis

Currently:
- Platform is live with ~20 paying customers
- Initial MVP was built quickly using a “vibe coding” approach → now undergoing restructuring and productionization
- Moving toward a more scalable, clean architecture with APIs and separated systems
- Future plans include expanding into automated implementation of recommendations

About the Team:

Looking for experienced proactive person who can take on tech leadership from current R&D developer and tackle next challenges:

• Existing codebase is messy and requires refactoring/re-architecture.
• Need to stabilize and scale a working but early-stage system.
• Managing two separate systems (frontend app + LLM data engine).
• Increasing need for complex integrations (LLMs, analytics tools, CRMs, enterprise systems).
• Lack of strong internal technical leadership to define roadmap and best practices.

Key Responsibilities:

• Own and improve overall system architecture (frontend, backend, data/LLM systems).
• Refactor and scale existing MVP into production-grade system.
• Hands-on full-stack development.
• Lead LLM integrations (APIs, prompting, orchestration).
• Build and maintain integrations (payment, CRM, analytics, erp, custom APIs).
• Work closely with founders on product and technical roadmap.
• Participate in hiring and mentoring future engineers.

Required Skills and Experience:

• 5+ years in full-stack development building and scaling SaaS products.
• Background in early-stage/startup environments refactoring or rebuilding MVP systems.
• Background working with data/AI-driven products.
• Strong full-stack skills (React/Vue + Node.js/Python or similar).
• Solid understanding of system architecture and scalability.
• Experience with API design and system integrations.
• Hands-on experience with LLM/AI integrations: OpenAI, Gemini, or similar APIs. Prompting and workflow design.

Nice-to-Have skills:

• Experience with domains related to SEO / eCommerce / marketing tech.
• Experience with enterprise integrations (Salesforce, ERP, etc.).
• Experience connecting 3d-party APIs & tools.

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

We are building RailX — an AI-native B2B web marketplace for block train backhaul capacity on the Poland–Ukraine rail corridor. Built by United Multimodal Services LLC (Szczecin, Poland), a rail and multimodal logistics operator on the US–Poland–Ukraine corridor.

The platform lets block train operators post available return-leg capacity and cargo owners commit to it. The core interface is Rex — an AI agent powered by the Anthropic Claude API. Rex replaces all forms and search bars with expert conversation. 6 agents total at MVP.

We are looking for one senior developer (freelance or small team) to build the MVP. Contract: 6 months, fixed price €20,000–€35,000. Fully remote.

REQUIREMENTS:

— Proven Anthropic Claude API experience — you MUST provide a live product URL. Generic LLM or ChatGPT experience is not sufficient.

— Next.js (App Router)

— Supabase (auth, database, storage)

— Stripe (payments)

— Multi-agent architecture experience strongly preferred

— Senior level: able to own architecture decisions independently

NICE TO HAVE:

— Experience with logistics, marketplace, or B2B SaaS products

— Familiarity with the Vercel AI SDK

PRODUCT LANGUAGES: English, Polish, Ukrainian

HOW TO APPLY:

Apply directly via Djinni. In your application message, please include a live URL of a product you built using the Anthropic Claude API. Applications without this will not be considered.

PM: Sani Ezugbaia | Company: United Multimodal Services LLC, Szczecin, Poland

Job Description

5+ years of experience in software development, with a focus on C#, React, and .NET Core.
Strong knowledge of object-oriented programming, design patterns, and modern software architectures (e.g. serverless, microservices, containerized, etc.).
Proficiency in front-end development using React.js and modern JavaScript/TypeScript frameworks.
Experience with cloud platforms (e.g., Azure, AWS, or GCP). - Azure preferred
Experience with CI/CD pipelines, unit testing, and deployment automation tools.
Excellent problem-solving skills and ability to work in a fast-paced, agile environment.
Experience working with Azure DevOps for task tracking and code repository would be a plus.
Experience working with AI-based productivity tools would be a plus.
Experience with NextJS and Syncfusion UI component library would be a plus.

Job Responsibilities

• Perform as part of a team in designing, developing, and deploying high-quality applications using C#, React, and .NET Core working on one of the workstreams on the project in Healthcare domain.
• Design and deliver individual system modules and microservices.
• Conduct code reviews and support junior team members to ensure technical excellence and professional growth.

• Troubleshoot complex technical issues and optimize performance of applications.

   

Department/Project Description

Client is a leading global Contract Research Organization (CRO) that provides Phase I-IV clinical trial management, market access, and technology solutions with over 30 years of experience.

We are seeking an experienced developer for a 2-3 month, full-time project-based position.
 

It is important that the candidate has a broad knowledge of technologies and be independent and responsible.
 

Requirements:
- JavaScript, React, TypeScript, Node.js, at least 5 years of experience
- Any other technology (back end) is an advantage - at least 5 years of experience
 

Remote work.
 

Responsibilities:
- Software development for our own project
- Consulting and assistance in developing architecture and technical solutions
- Product and business thinking

We're looking for a Senior FullStack Engineer with strong AI and agentic development experience to join our growing team. You'll lead the development of user interfaces and services that power marketing analytics, identity resolution, and cross-platform personalization — leveraging AI agents and spec-driven workflows to ship faster and smarter.

What You'll Do

• Build and maintain high-performance, scalable web applications using Node.js, React.js, GCP, MongoDB.
• Develop features end-to-end using AI-assisted, spec-driven workflows — creating detailed technical specifications and implementing them via AI coding agents (Claude Code, Codex, Gemini CLI).
• Work closely with Data Scientists, GTM Engineers and Backend Engineers to bring graph-based identity resolution, campaign analytics, and data activation to life.
• Design UIs with advanced data visualization (e.g., using Highcharts, Recharts, etc.).
• Collaborate on multi-tenant architecture, OAuth-based integrations, and automated onboarding experiences using Auth0, Firebase, and Google Cloud Functions.
• Work with the backend team to integrate features and deliver end-to-end value, including billing, Slack alerting, email messaging and integration with various third-party services.
• Drive test automation using Vitest and Jest, and help ensure performance monitoring with OpenTelemetry and Sumo Logic.
• Define and refine AI agent configurations — custom instructions (CLAUDE.md), hooks, skills, and prompt templates — to optimize team-wide development workflows.
• Build and maintain MCP Servers to expose internal REST/HTTP APIs to AI agents, enabling seamless tool-use across the development lifecycle.
• Champion UI/UX best practices while maintaining clean, maintainable code using ESLint, Prettier, SonarQube, etc.
• Act as a Feature Lead, leading the architecture, technical documentation, communication with CTO, Tech Lead and Product Owner on the best tech realization of the selected feature.

Must-Have Qualifications

• 4+ years experience with JavaScript/TypeScript and modern frameworks.
• 3+ years experience with React.js, including hooks and context API.
• 3+ years experience with Node.js 20+, Express.js 4+, (or Nest 10+), and related tooling.
• Proven experience with AI-assisted development — using tools such as Claude Code, Codex, or Gemini CLI to accelerate coding, debugging, and code review.
• Ability to author and interpret detailed technical specifications for front-end and back-end features, enabling efficient development through AI agents.
• Solid experience working in a Serverless environment (especially with Google Cloud Platform: Firebase, Cloud Run/Functions, App Engine, Logging, API Gateway).
• Deep understanding of REST APIs.
• Experience with CI/CD workflows using GitHub Workflows/Actions.
• A strong drive to build products through AI Agents rather than writing code manually.
• English: intermediate level or higher.

Bonus Points

• Experience with Neo4j and graph data modeling (e.g., identity graphs).
• Familiarity with Mongoose, MongoDB, BigQuery, and CDP tools.
• Experience building dashboards for analytics or marketing tech platforms.
• Hands-on experience building or integrating agentic AI workflows (e.g., LLM-powered pipelines, tool-use agents, RAG systems).
• Familiarity with prompt engineering and LLM API integration (Anthropic, OpenAI, Google).
• Experience creating custom skills/plugins for AI agents and building MCP Servers on top of existing REST/HTTP APIs.
• Ability to use Claude Code (or similar tools) beyond code generation — for technical documentation, DevOps troubleshooting, and CI/CD pipeline configuration.

Tech Stack You'll Work With

• Frontend: React, Vite, MUI, AntD, Tailwind, D3, Highcharts, Recharts, Formik, Yup
• Backend: Node.js, Express, Nest, MongoDB, BigQuery, Auth0, Slack APIs, Google APIs
• AI Development: Claude Code, Codex, Gemini CLI, MCP Servers, spec-driven development workflows
• DevOps/Tooling: GitHub Actions/Workflows, Husky, Prettier, ESLint, npm, pnpm, Vitest, Jest

What We Offer:

• 4 weeks of paid vacation per year (with flexible scheduling)
• Unlimited sick leave — we trust your judgment and care about your health
• US Bank Holidays off — following the American holiday calendar
• A chance to work in a dynamic, multicultural team of professionals driven by a
• shared passion for product innovation and real impact
• A flat structure, no micromanagement, and full ownership of your work
• Remote-first culture and flexible working hours

Our Interview Process Is Simple and Fast:

1. Recruitment Screening Call

General conversation about your background, English check, and Q&A from your side.

2. Technical & Soft Skills Interview

Conducted by our Head of Delivery and Tech Lead.

3. Final Culture Fit Interview

General conversation in English with our CОO and CTO.

Why Join Us?

Be part of a product-first, data-driven startup reshaping martech

Work on modern tech with real ownership and creative freedom

Collaborate with senior-level professionals in a global, fast-moving environment

Ready to build the future of data-powered marketing with us?

Apply now and let’s talk!

🔎About SoftPlus Ukraine

SoftPlus Ukraine is a growing software development company with roots in Ukraine and partnerships around the globe. We collaborate with companies of all sizes and stages — from ambitious startups to established enterprises. What unites our team is a shared passion for technology, a commitment to quality, and a drive to keep improving every day.

Our people are at the heart of what we do. We’re a diverse team of skilled professionals working remotely across different cities and countries, yet closely connected through teamwork, knowledge-sharing, and mutual support.

📌The Role

We’re looking for a Trainee/Junior Flutter Developer who is eager to learn, grow, and contribute to real-world projects from day one. This is a great opportunity if you have a solid foundation in programming and want to put your skills into practice while building modern, user-friendly applications. You’ll be part of a supportive team that values collaboration, knowledge sharing, and continuous improvement.

📋Key Responsibilities

• Assist in identifying and fixing bugs and issues in the codebase
• Contribute to mobile development using Flutter by designing and implementing user-friendly interfaces
• Participate in code reviews with more experienced developers to learn best practices and coding standards
• Help refactor existing code to improve efficiency, readability, and maintainability
• Collaborate closely with senior developers, gaining hands-on experience and guidance in both front-end and back-end development

📝Requirements

• Completed or ongoing Bachelor’s degree in Computer Science or a related field
• Solid understanding of software development principles and best practices
• Demonstrated coding skills with pet projects available on GitHub (or similar platform)
• English proficiency at B1+ level
• Availability for a full-time schedule: 12:00 – 20:30 (Mon–Fri, including a 30-minute lunch break)
• Willingness to participate in regular team meetings during working hours
• Strong analytical and problem-solving skills
• Excellent communication and teamwork abilities

What We Offer

💸  Paid probation period — 4 weeks of full-time, hands-on experience before official hiring

📈  Growth opportunities — clear paths for professional development and career advancement

🔋 Supportive culture — a friendly, collaborative environment where your ideas matter

🖥️  Modern projects — work with cutting-edge technologies on meaningful, real-world applications

💡 Talented team — join a motivated group of professionals who are always ready to share knowledge and help you grow

Join our team at SoftPlus Ukraine and contribute to the success of our innovative projects. 
Apply now!

OneTablet helps restaurants sell more across Glovo, Bolt, DoorDash, Uber Eats, Grubhub and others — we optimize platform algorithms, enhance menus with AI, and expand sales surface so restaurants make more money, measurably, in dollars. We're a small senior team shipping fast with real customers. We build AI-first: agents, MCP servers, autonomous workflows — not as a gimmick, but as how we actually work. We're looking for a strong fullstack engineer who already develops this way and understands that AI shifts the role toward more product thinking and ownership, not less engineering.

What you'll do

• Build and own product features end-to-end (backend + frontend)
• Design business logic and workflows used daily by restaurants
• Work with GraphQL APIs and build React-based UI focused on clarity
• Use AI deeply in daily work — agentic workflows, not just autocomplete
• Collaborate closely with product and design
• Improve development practices and push what's automatable

What we expect

• Strong full-stack: Node.js / TypeScript + React + GraphQL in production
• UX sensitivity — you care how things feel
• AI is your default development mode (Claude Code, Cursor, or similar) — deep usage, not surface-level
• Product sense — you think about what to build, not just how
• High ownership: you ship, you fix, you improve
• Startup / small team experience

Nice to have

• Experience building AI agents, MCP servers, or autonomous dev workflows
• Dashboards, admin tools, B2B products
• GCP, PostgreSQL, React Native

How we work

Small senior team · High trust, high ownership · Fast decisions, short loops · You build it → you own it

Requirements:

• 7 years total
• 3+ yrs - Next.js
• 5+ yrs - Node.js (Nest), Typescript
• 1+ year of experience with AI domain
• Experience with Clickhouse preferable

An AI platform for YouTube creators that analyzes channels and competitors, searches for viral ideas, generates video scripts and engaging thumbnails, prepares SEO-optimized titles and descriptions, analyzes retention and CTR, provides detailed channel analytics, offers AI agents for content creation, includes a Telegram bot and web app for management, and facilitates content planning.

Core responsibilities:

• Support and development of the ClickHouse scraping pipeline,
• Monitoring core platform logs,
• Improving the current architecture,
• Developing new features.

Work directly with CEO and CTO with no project managers, well defined tasks - tasks are set in chat Strong ownership; knowledge of architecture patterns.

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Full-stack developer to join one of our clients' team. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.

Responsibilities:

•Develop, optimize, and maintain Next.js-based front-end applications with pixel-perfect UI and high

performance across all 6 portals

• Build and maintain NestJS-based APIs, microservices, and scalable back-end architecture with

Prisma ORM

• Own Prisma migration workflows - schema changes, migration generation, seeding, and

coordination with QA on data integrity

• Deploy and manage infrastructure on AWS and Google Cloud Platform (dual-cloud architecture)

• Implement and maintain multi-tenant architectures with tenant isolation at the code level - each

portal has distinct user roles and data access patterns

• Use Claude Code as your primary AI-assisted coding tool to accelerate development, generate code,

debug, and refactor

• Leverage Cursor as a secondary AI IDE for rapid iteration and code exploration

• Orchestrate and configure sub-agents within Claude Code for complex multi-step development tasks

(test generation, documentation, migration scripts, code reviews)

• Build MCP (Model Context Protocol) integrations to connect AI tooling with platform data sources and

workflows

• Write code that passes SonarCloud quality gates on first push - understand code smell resolution,

quality gate criteria, and static analysis compliance (4,484+ issues being burned down in waves)

• Respond to and address feedback from 5 PR review bots (Devin, Bugbot, Codex, Copilot, Augment)

in addition to human reviewers

• Work on front-end aspects including data extraction tools, dynamic scheduling, dynamic pricing, and

workflow automation interfaces

•Optimize application performance for millions of concurrent users - efficient database queries,
connection pooling, caching strategies (Redis/ElastiCache), lazy loading, and code splitting
• Design and implement scalable data access patterns - pagination, cursor-based queries, read
replicas, and query optimization for high-throughput workloads
• Build systems that handle tens of millions of sessions without degradation - connection management,
rate limiting, graceful degradation, and horizontal scaling patterns
• Profile and resolve performance bottlenecks across the full stack: frontend rendering, API response
times, database query plans, and cache hit ratios
• Collaborate closely with designers, product managers, and QA to deliver features rapidly
• Contribute to the Marcia Enabled ecosystem - building AI-powered features across the platform

Job requirements

•AI-Assisted Development (Critical): Proven, daily experience using Claude Code (or equivalent

agentic coding tool) as your primary development environment. You must demonstrate fluency in

prompt engineering for code, sub-agent orchestration, multi-file refactoring via AI, and AI-driven test

generation.

• Claude Code & Sub-Agents: Hands-on experience configuring and using sub-agents for parallelized

tasks - writing tests, generating docs, running migrations, and reviewing PRs via AI.

• Cursor / AI IDE: Comfortable using Cursor as a secondary tool for code exploration, inline

completions, and rapid prototyping.

• Strong JavaScript/TypeScript and Next.js expertise (App Router, Server Components, Suspense)

• Deep proficiency with NestJS for backend API development, microservices patterns, and Prisma

ORM (schema design, migrations, seeding)

• Scale & Performance (Critical): Proven experience building and optimizing applications serving

millions of users with high concurrency. You must understand database query optimization,

connection pooling, caching strategies, horizontal scaling patterns, and how to profile and resolve

bottlenecks across the full stack.

• Cost Optimization: Experience identifying and reducing unnecessary cloud spend, optimizing

database costs, right-sizing infrastructure, and writing efficient code that minimizes compute and

memory consumption at scale.

• Proficiency with AWS services (ECS, Lambda, S3, CloudFront, RDS, SQS) and Google Cloud

Platform (GKE, Cloud Run, BigQuery, Cloud Functions)

• Experience in multi-tenant front-end and back-end architecture with tenant isolation

• Redis/ElastiCache for caching and session management (this is core infrastructure, not optional)

• pnpm monorepo experience - the codebase is a monorepo with pnpm workspaces. This is a daily

workflow requirement

• SonarCloud compliance - understanding quality gates, code smell categories, and writing clean

code that passes static analysis

• Proficiency with CI/CD pipelines (GitLab CI, GitHub Actions) and deployment automation

• Comfortable with remote development environments - developers work on EC2 dev boxes accessed

via Tailscale VPN, not local machines. SSH-based workflows required

• Experience with real-time features: Socket.io, Redis, BullMQ

• Security hygiene: IP allowlists, secret scanning, and push protection are enforced at the GitHub org

level. Pushing secrets triggers alerts. Security consciousness is non-negotiable.
 

Nice-to-Have Skills:

• Experience building or integrating MCP servers and tools

• Background in LLM integration (API calls, prompt management, token optimization)

• Exposure to serverless architecture and microservices integration on AWS/GCP

• Experience in healthcare/veterinary/scheduling-heavy applications