Jobs Fullstack

About us

We build AI-powered solutions that solve real business problems. You’ll work with the latest technologies and implement production-grade AI features, including RAG pipelines, agentic and multi-agent workflows.

Responsibilities

• Solve engineering problems related to process automation, knowledge systems, and agentic / multi-agent architectures.
• Design, build, and maintain AI-powered features that go beyond basic LLM API calls.
• Develop backend services using Node.js (Express, Fastify, or NestJS).
• Implement and iterate on RAG pipelines (retrieval strategies, chunking, evaluation, quality improvements).
• Integrate external APIs, payment systems, and authentication flows.
• Design clean REST APIs and ensure reliable client–server communication.
• Work with PostgreSQL.

Requirements

• Strong problem-solving mindset, creativity, and ability to learn quickly.
• Solid Node.js experience in production (2+ years).
• Practical experience and strong interest in LLM-based systems, not just simple ChatGPT-style wrappers, including:
  • RAG
  • LangChain (bonus: LangGraph, LangSmith)
  • Prompt engineering
• Understanding of backend fundamentals: APIs, databases, performance, and debugging.

Nice to have

• Experience with Python and FastAPI.
• Redis, queues, caching.
• AWS or GCP familiarity.
• CI with GitHub Actions.
• Monitoring and tracing tools (Prometheus, Grafana, OpenTelemetry).

What we offer

• Competitive salary and bonuses
• Remote-first culture
• Flexible schedule
• Open-minded, results-driven environment
• Product ownership and impact

Workload: full-time, remote
Start: September 2026
Duration: initially 6 Months with potential prolongation
Location: any
Working hours: Standard UK business hours, with occasional out-of-hours release or hypercare support
English: B2

MOST IMPORTANT !!!:

• Updated CV clearly evidencing hands-on Apache OFBiz work and the OFBiz components used
• Examples of Java, Groovy, FreeMarker, ERP integration and SQL delivery

Overview
Our client is supporting an established UK organisation seeking a Full Stack Java Developer to design, enhance and maintain web applications and ERP-related solutions that support core business processes.
This is a hands-on role spanning backend services, user interfaces, relational data and integrations. The strongest candidates will combine practical Java development with genuine Apache OFBiz experience, including Groovy and FreeMarker, and be comfortable troubleshooting across application and data layers.

About the Role
The developer will work across frontend, backend, and database layers to deliver scalable and maintainable business applications. The role includes translating requirements into technical solutions, extending an Apache OFBiz-based ERP environment, building integrations, improving user interfaces and supporting releases into production.
A key part of the role is production ownership: investigating issues, identifying root causes and implementing durable fixes and preventative improvements.

Architecture & Technology
Core application stack
• Java for backend services and business logic
• Apache OFBiz, including entities, services, events, screens and components
• Groovy for business rules, integrations, automation and scripting
• FreeMarker templates for user interfaces within OFBiz
• HTML, JavaScript and CSS for responsive, accessible web interfaces
• SQL for query design, optimisation and relational data modelling
Integration and delivery context
• ERP workflows, interfaces, data mappings and scheduled jobs
• Web application architecture, API design and secure coding practices
• Unit and integration testing, code review and technical documentation
• Release support and post-release hypercare

Must-Have Experience & Skills
Technical
• Proven commercial experience as a Full Stack Developer, Java Developer or similar
• Strong Java development capability across business logic and web applications
• Hands-on Apache OFBiz development experience
• Practical Groovy and FreeMarker experience within an OFBiz or closely related environment
• Experience delivering or integrating ERP applications and workflows
• Frontend capability using HTML, JavaScript and CSS
• Strong SQL skills, including query optimisation and relational data modelling fundamentals
• Understanding of web application architecture, API design and secure coding
• Strong debugging and root-cause analysis across application and data layers

Business & delivery
• Ability to translate business requirements into technical specifications
• Clear communication with technical and non-technical stakeholders
• Collaborative approach to development, review and delivery
• Willingness to support occasional travel and out-of-hours release activity

Nice-to-Have Experience
• CI/CD pipelines, Git or another version-control platform, and release management
• Containerisation, cloud hosting or Linux administration in application environments
• Performance tuning within Apache OFBiz and relational databases
• Relevant degree or equivalent practical experience
• Relevant Java, web development or database certification

Key Responsibilities
Solution design and development
• Design, develop and implement maintainable solutions across frontend, backend and database layers
• Work with cross-functional stakeholders to gather requirements and translate them into technical specifications
• Apply good practices across coding, testing, security, performance and deployment
Backend and OFBiz
• Build and enhance backend services and business logic using Java and Apache OFBiz
• Develop and maintain OFBiz entities, services, events, screens and components
• Use Groovy to implement rules, integrations, automation and scripting
• Troubleshoot production issues, complete root-cause analysis and implement robust fixes

Frontend, data and integration
• Develop interfaces using FreeMarker, HTML, JavaScript and CSS
• Deliver responsive and accessible components, with cross-browser consistency
• Design efficient SQL queries and appropriate schema enhancements
• Support ERP workflows and integrations while protecting data integrity and process alignment
• Develop interfaces, data mappings, and scheduled jobs with integration and application teams

Quality and delivery
• Write unit and integration tests and contribute to automated coverage
• Participate in code reviews and uphold development standards
• Maintain appropriate technical documentation
• Support releases and post-release hypercare, including occasional out-of-hours activity

Success Criteria
• Delivers reliable, maintainable changes across the OFBiz application stack
• Translates business needs into clear and proportionate technical solutions
• Improves the stability, performance and supportability of ERP-related applications
• Diagnoses production issues efficiently and implements durable preventative fixes
• Maintains data integrity and dependable system integrations
• Collaborates effectively with business, application and integration stakeholders

Working Practices
Reporting line: Software and Integration Lead
Team: Expected to work with cross-functional business, integration and application stakeholders; exact team composition to be confirmed.

Assessment Process
• CV review focused on recent Java, Apache OFBiz, Groovy, FreeMarker, ERP and SQL delivery
• Technical screening
• Practical or collaborative technical assessment covering Java/OFBiz problem-solving and system integration
• Final client interview covering technical fit, stakeholder collaboration and working arrangements

 

We're a creative agency looking for an AI-native builder to be our go-to for anything that can be built or automated with AI. We work project by project, and we move fast. If you can build in days what used to take weeks, that speed is exactly what we're paying for.
 

What you'd work on

It changes weekly: a custom site for us, an app one of us is building, a membership portal or rewards program, an internal automation that saves hours, or something we haven't thought of. If it can be built intelligently, it lands with you. We want someone energized by that range, not thrown by it.
 

Who we're looking for

• You live in AI tools (Claude Code, Cursor, whatever you've made your own) and have real opinions about them.
• You know where AI fails. Generating a prototype is easy now; knowing when the output is wrong, insecure, or won't survive real use is the actual skill. That's what we're paying for.
• You design as well as build, or at least have a real eye. We give brand direction and references; you make it real.
• You've shipped things people use, ideally maintained something past launch.
• You think like an owner, not a contractor counting hours. You'd rather solve it than pad it.
• You're comfortable with ambiguity: landing page one day, automation the next, internal tool after that.
   

On tools: you'll know your stack better than we do. Shopify, Webflow, WordPress, custom, whatever fits the job. We care that you pick right and execute well, not that you know one platform. Automation and app experience (n8n, Make, backends) is a plus.
 

How this works

Your first project is real, a website build we already have scoped, so you're producing from day one, not interviewing in the abstract. It's paid like any other project, and if it goes well there's ongoing work from there.
 

Compensation: $700 to $2,000 per project depending on scope, experience, and speed. Website builds fall in that range; larger apps, portals, or automation work are scoped and quoted separately. Open on location and hours as long as output is strong and communication is reliable.
 

To apply, send:

1. Live links to things you've built. Not screenshots.
2. A few sentences on a time AI got you 80% there, and what you did for the last 20%.
3. One thing you automated or built that saved real time.

That second answer tells us more than any portfolio.

We are looking for an AI Product Engineer for a project-based role to design, build, and ship cutting-edge AI systems from initial concept to robust production deployment. If you excel at building agentic workflows, optimizing RAG pipelines, managing LLM latency and costs, and actively leverage modern AI coding tools like Cursor or Claude Code in your daily development, we’d love to have you on our team!

Responsibilities:

• Architect and implement AI features end-to-end—from technical design through to production launch.
• Integrate LLMs and external AI APIs, handling streaming, structured outputs, retries, fallback strategies, and function/tool calling.
• Build and optimize RAG systems for private data (ingestion pipelines, chunking strategies, embeddings, vector search, and reranking).
• Develop AI agents and multi-step workflows utilizing tools, MCP (Model Context Protocol), or Agents SDKs.
• Establish AI evaluation (evals) and monitoring tools, implement guardrails, and control for performance, speed, cost, and security.

Requirements:

• Production experience with Python and/or TypeScript developing backend services and APIs (FastAPI or Node.js).
• Hands-on experience integrating major LLM APIs (OpenAI, Anthropic, Gemini, Bedrock, or similar), including streaming, structured output, retries, and tool/function calling.
• Practical production experience with prompt engineering and RAG architecture (chunking, embeddings, vector databases, retrieval, and reranking).
• Experience developing AI agents, multi-step agent workflows, MCP, or function-calling systems.
• Proven track record with AI evaluations, monitoring, guardrails, latency/cost optimization, testing, Git, and CI/CD pipelines.
• Hands-on, daily experience using AI coding tools (Claude Code, Cursor, Codex, GitHub Copilot, etc.) on real production codebases - including rigorous code review and refinement of generated code.
• Upper-Intermediate level of English

What We Offer:

• Work from Anywhere (Fully Remote): Setup your workspace wherever you feel safest, happiest, and most productive.
• Control Your Day: Structure your working hours around your lifestyle and team syncs.
• Time to Recharge: 20 paid day-offs per year + 11 official public holidays in Ukraine.
• 5 fully paid sick days: no questions asked, so you can focus entirely on recovering when you're under the weather.
• Master your English with company-sponsored English courses, ensuring you feel perfectly confident collaborating with our clients.
• Upskilling Allowance: We fully reimburse educational courses and certifications that align with your professional goals and our business growth.

We are looking for a Senior AI / .NET Full-Stack Software Engineer to help design, develop, and operate modern cloud-based applications for the healthcare domain.

In this role, you will work across Front-end, Back-end, and DevOps domains while designing and integrating AI-powered features into business applications used by doctors and clinics. The position requires hands-on commercial experience with modern AI and LLM technologies.

CUSTOMER AND PROJECT

Our Customer operates in the medical domain and develops applications for doctors and clinics.

The project combines .NET Full-Stack development, cloud-native engineering, DevOps practices, and the integration of AI-powered capabilities into healthcare applications.

TECHNOLOGY STACK

• React, Angular
• C#, .NET
• Kafka, Terraform
• Kubernetes, Helm, ArgoCD
• Azure OpenAI or similar AI platforms

RESPONSIBILITIES

• Develop and maintain modern web applications using .NET and modern Front-end technologies
• Design, develop, and integrate AI-powered features into business applications
• Build AI agents, intelligent workflows, and automation solutions
• Work with modern LLM platforms and AI development tools
• Build and operate cloud-native services with a strong focus on reliability, security, and scalability
• Collaborate with Product, UX, Architecture, and Engineering teams
• Drive engineering excellence and AI adoption within development teams

REQUIREMENTS

• Senior-level .NET Full-Stack development experience
• Strong Front-end expertise with React or Angular
• Strong Back-end expertise in C# and .NET
• At least 1 year of hands-on commercial experience developing and integrating AI-powered features into software products
• Practical experience building AI agents, intelligent workflows, or automation solutions
• Practical experience with modern LLM ecosystems and AI platforms, such as Azure OpenAI or similar
• Experience with cloud-native architectures and DevOps practices
• Demonstrated practical use of AI tools in software engineering
• Degree in Computer Science or an equivalent technical background
• Strong English communication skills

Location: Bucharest, Romania
Work format: Remote
Employment type: Full-time

We are looking for a Senior AI / Java Full-Stack Software Engineer to help design, develop, and operate modern cloud-based applications for the healthcare domain.

In this role, you will work across Front-end, Back-end, and DevOps domains while designing and integrating AI-powered features into business applications used by doctors and clinics. The position requires hands-on commercial experience with modern AI and LLM technologies.

CUSTOMER AND PROJECT

Our Customer operates in the medical domain and develops applications for doctors and clinics.

The project combines Java Full-Stack development, cloud-native engineering, DevOps practices, and the integration of AI-powered capabilities into healthcare applications.

TECHNOLOGY STACK

• React, Angular
• Java, Spring Boot
• Kafka, Terraform
• Kubernetes, Helm, ArgoCD
• Azure OpenAI or similar AI platforms

RESPONSIBILITIES

• Develop and maintain modern web applications using Java, Spring Boot, and modern Front-end technologies
• Design, develop, and integrate AI-powered features into business applications
• Build AI agents, intelligent workflows, and automation solutions
• Work with modern LLM platforms and AI development tools
• Build and operate cloud-native services with a strong focus on reliability, security, and scalability
• Collaborate with Product, UX, Architecture, and Engineering teams
• Drive engineering excellence and AI adoption within development teams

REQUIREMENTS

• Senior-level Java Full-Stack development experience
• Strong Front-end expertise with React or Angular
• Strong Back-end expertise in Java and Spring Boot
• At least 1 year of hands-on commercial experience developing and integrating AI-powered features into software products
• Practical experience building AI agents, intelligent workflows, or automation solutions
• Practical experience with modern LLM ecosystems and AI platforms, such as Azure OpenAI or similar
• Experience with cloud-native architectures and DevOps practices
• Demonstrated practical use of AI tools in software engineering
• Degree in Computer Science or an equivalent technical background
• Strong English communication skills

WHO WE ARE 

We are Edge Solutions Lab, a team of engineers with a strong background in product development of edge solutions and data platforms.

We have a long-term partnership with a customer in the US who is looking to expand their onsite team with talented engineers like you. This is an exciting opportunity to collaborate with industry leaders, work on impactful projects, and contribute to the development of next-generation data analysis technologies for healthcare, biotechnology, and research domains.
 

WHO WE ARE LOOKING FOR
 

We are seeking a highly skilled Full Stack Developer to join our team, working on an innovative bioinformatics platform focused on simplifying the analysis and interpretation of RNA-sequencing data through intuitive web applications and cloud-backed services. In this role, as part of a team, you will be building, modifying, and improving user-facing web applications, implementing REST APIs and back-end business logic, and building data processing workflows that help researchers and scientists explore data, visualize results, and derive actionable insights.
 

KEY RESPONSIBILITIES

• Design customer-facing Web UI, RESTful services, and APIs for a modern bioinformatics analysis platform.
• Design and maintain data processing pipelines to support data processing and analysis workflows.
• Design user interactions on web pages.
• Develop high-performance applications by writing testable, reusable, and efficient code.
• Develop effective SQL and NoSQL data layers by utilizing various databases.
• Develop integrations with third-party services using external APIs.
• Implement effective security protocols, data protection measures, and storage solutions.
• Collaborate with team members and stakeholders on the integration of various parts of the platform.
• Ensure that non-functional requirements such as security, performance, maintainability, scalability, usability, and reliability are considered when architecting solutions.
• Document processes, including database schemas, as well as prepare reports.
   

WHAT YOU BRING ALONG

• At least 6 or more years of working experience in a Full Stack position.
• Strong proficiency in TypeScript, JavaScript ES6+, HTML5, and CSS3.
• Extensive knowledge of ReactJS and Next.js, along with their ecosystem and common frontend development patterns.
• Solid hands-on experience with Node.js and building applications in TypeScript.
• Experience with RESTful architecture.
• Experience with OAuth2-based authentication and authorization flows.
• Proficiency in database design and hands-on experience with SQL, including PostgreSQL.
• Experience with event-driven architecture and messaging middleware (MQTT).
• Familiarity with common software development and management tools such as GitLab CI, Jira, and Confluence.
• Good understanding of common programming paradigms and architectural design patterns.
• Strong interpersonal, analytical, and organizational skills.
• Bachelor's degree in Computer Science, Software Engineering, Information Science, or other related fields.
   

WILL BE A PLUS

• Hands-on experience with containerization tools (Docker) and orchestration platforms (Kubernetes).
• Experience with Airflow and DAG pipeline development.
• Hands-on experience with development of cloud-native applications and utilizing AWS services (S3, ECS/EKS, RDS).
• Hands-on experience with Auth0.
• Experience working with billing providers, preferably Chargebee.
• Familiarity with R and experience working with data-processing or analysis pipelines written in R.
• Experience with Python for backend or data processing tasks.
• Development of IoT applications.
• Experience with testing frameworks.

ROLE OVERVIEW

We are looking for a Senior AI/Python Full-Stack Software Engineer to help design, develop, and operate modern cloud-based applications for the healthcare domain.

In this role, you will work across Front-end, Back-end, and DevOps domains while designing and integrating AI-powered features into business applications used by doctors and clinics. The position requires hands-on commercial experience with modern AI and LLM technologies.

CUSTOMER AND PROJECT

Our Customer operates in the medical domain and develops applications for doctors and clinics.

The project combines Python Full-Stack development, cloud-native engineering, DevOps practices, and the integration of AI-powered capabilities into healthcare applications.

TECHNOLOGY STACK

• React, Angular
• Python
• Kafka, Terraform
• Kubernetes, Helm, ArgoCD

• Azure OpenAI or similar AI platforms

   

RESPONSIBILITIES

• Develop and maintain modern web applications using Python and modern Front-end technologies
• Design, develop, and integrate AI-powered features into business applications
• Build AI agents, intelligent workflows, and automation solutions
• Work with modern LLM platforms and AI development tools
• Build and operate cloud-native services with a strong focus on reliability, security, and scalability
• Collaborate with Product, UX, Architecture, and Engineering teams

• Drive engineering excellence and AI adoption within development teams

   

REQUIREMENTS

• Senior-level Python Full-Stack development experience
• Strong Front-end expertise with React or Angular
• Strong Back-end expertise in Python
• At least 1 year of hands-on commercial experience developing and integrating AI-powered features into software products
• Practical experience building AI agents, intelligent workflows, or automation solutions
• Practical experience with modern LLM ecosystems and AI platforms, such as Azure OpenAI or similar
• Experience with cloud-native architectures and DevOps practices
• Demonstrated practical use of AI tools in software engineering
• Degree in Computer Science or an equivalent technical background
• Strong English communication skills

We are looking for a Senior AI Software Engineer with strong full-stack experience to help design, develop, and operate modern cloud-based software products. The engineer should be comfortable working across frontend, backend, and DevOps domains while integrating AI-native capabilities into business applications.

Key Responsibilities

Develop and maintain modern web applications.

Design and implement AI-powered features and agentic workflows.

Build and operate cloud-native services with strong focus on reliability, security, and scalability.

Collaborate with product, UX, architecture, and engineering teams.

Drive engineering excellence and AI adoption within development teams.

Required Skills

Senior-level full-stack development experience.

Strong frontend expertise in React or Angular.

Strong backend expertise in Java/Spring Boot or Python or C#.

Experience with cloud-native architectures and DevOps practices.

Demonstrated practical use of AI tools in software engineering.

Degree in Computer Science or equivalent technical background.

Preferred Qualifications

Experience building AI agents, workflows, or automation solutions.

Familiarity with modern LLM ecosystems and AI tooling.

Understanding of product development processes.

Technology Stack

React, Angular

Java/Spring Boot, Python, C#

Kafka, Terraform

Kubernetes, Helm, ArgoCD

Azure OpenAI or similar AI platforms

Engagement

Full-time engagement

Strong English communication skills required

Middle Full Stack Engineer

We’re building the Production ready system from the PoC and looking for a Middle Full Stack Engineer who enjoys creating scalable products and taking ownership of real technical decisions. You’ll work closely with product and design teams, shape parts of the architecture, and help turn ideas into a production-ready platform.

Requirements:

• 3+ years of software development experience with JavaScript, TypeScript, and modern ES6+
• Good experience with React and Next.js
• Good experience with backend development using Node.js / NestJS
• Hands-on experience with MongoDB and PostgreSQL
• Experience building scalable applications and contributing to system architecture
• Comfortable working in fast-paced, product-driven environments
• Good communication skills and ability to collaborate with both technical and non-technical stakeholders
• Upper-Intermediate English (B2+)

Nice to Have:

• Experience with MQTT
• Experience with React Native or WebSockets
• Experience working in startup or early-stage environments
• Experience building applications that can be deployed on both OnPrem and Cloud platforms
• Experience with Azure, IoT Hub, Microsoft Entra ID

Responsibilities:

• Develop and deliver key features of a new product from concept to launch
• Contribute to the design and implementation of scalable frontend and backend architecture
• Collaborate closely with product, design, and engineering teams
• Continuously improve performance, reliability, and scalability of the platform.

Full-Stack Developer (React + Node.js)

Format: Remote (office optional)

NovaCore builds modern web products with pixel-perfect UX and reliable engineering foundations. We’re looking for a Full-Stack Developer (React + Node.js) who writes clean, maintainable code and is confident working across both frontend and backend parts of the stack.

Requirements

• 2+ years of commercial full-stack experience.
• Hands-on experience with React, Node.js, Express.js (production-level projects).
• Strong proficiency in JavaScript (ES6+) and TypeScript.
• Solid understanding of RESTful APIs, authentication mechanisms, and server–client data flow.
• Experience with Redux / React Query / Context API for state management.
• Practical skills in HTML5, CSS3, and responsive UI development.
• Understanding of database design (SQL or MongoDB) and ORM/ODM principles.
• English level — B1+ for technical communication and documentation.

Nice to have

• Experience with Next.js (SSR/SSG) or similar frameworks.
• Knowledge of GraphQL and API integrations.
• Familiarity with Docker, CI/CD pipelines, or cloud deployments (AWS, GCP, Vercel).
• Understanding of software design patterns and clean architecture principles.
• Ability to debug performance bottlenecks on both frontend and backend.

Responsibilities

• Develop and maintain full-stack web solutions using React and Node.js.
• Build reusable, scalable components and REST/GraphQL APIs.
• Work closely with NovaCore’s core engineering team to implement new features.
• Review and optimize code for performance and readability.
• Research and resolve issues using official documentation and trusted resources.
• Meet deadlines and communicate progress proactively.
• Keep client/company tracking systems and repositories up to date.

What we offer

• Personalized growth plan toward Senior Full-Stack Developer with regular performance reviews.
• Flexible schedule: work remotely or from the office.
• Educational support — paid courses, internal workshops, and learning materials.
• 12 paid vacation days and 12 paid sick days annually.
• Official public holidays according to Ukrainian legislation.
• Competitive compensation based on experience and results.

Hiring process

1. Short recruiter screen (15–20 min)
2. Technical interview with engineers (60–90 min)
3. Optional short coding task or live-coding
4. Final chat with manager → offer

Tech stack:
React, Node.js, Express.js, TypeScript, JavaScript, Redux, REST, GraphQL, Next.js, HTML5, CSS3, MongoDB, SQL

About NovaCore
We build smart digital solutions in Healthcare and E-commerce sectors — scalable, performant, and visually polished products trusted by clients worldwide.

🌐 www.novacore.digital

Softsich is an international product tech company that develops scalable digital B2B solutions.

We are looking for a Full Stack Engineer with strong Java backend experience and solid frontend experience with React, JavaScript, and TypeScript to join our product development team.
The specialist will work on existing company services, contribute to backend solutions, integrations, internal services, and frontend features. We expect a proactive mindset, willingness to grow, and readiness to take ownership of results.

General Requirements:
• Ability to work effectively in a team.
• Clear communication and willingness to participate in technical discussions.
• Ability to analyze problems, suggest solutions, and take ownership of tasks.
• Product-oriented mindset and attention to code quality.
Backend Requirements:
• Commercial experience in Java development.
• Strong knowledge of Java Core and OOP principles.
• Experience with Spring Framework: Spring Boot, Spring Data, Spring Security.
• Experience working with relational databases and SQL.
• Experience with Apache Kafka and event-driven architecture.
• Experience with MongoDB or Amazon DocumentDB.
• Understanding of REST API design principles.
• Understanding of microservices architecture.
• Experience writing unit and integration tests.
Frontend Requirements:
• 5+ years of commercial frontend development experience with React, JavaScript, and TypeScript.
• Experience with SSR frameworks such as Remix or Next.js.
• Experience with Tailwind CSS.
• Experience with Shadcn/UI, Radix UI, or similar component libraries.
• Experience with i18n and multilingual applications, preferably i18next or react-i18next.
• Experience with forms and validation using React Hook Form and Yup or similar tools.
• Experience with modern React patterns: hooks, component composition, state management.
• Understanding of REST API integration on the frontend.
• Experience working with forms, validation, tables, filters, modals, and user-facing business flows.
• Understanding of Core Web Vitals and frontend performance optimization.
• Basic understanding of responsive layout and cross-browser compatibility.
• Experience with Git and GitLab-based development workflows: merge requests, code reviews, and CI/CD pipelines.
Nice to Have:
• Experience designing data schemas for MongoDB/DocumentDB.
• Experience optimizing queries and working with indexes in MongoDB or DocumentDB.
• Experience with Docker and Kubernetes.
• Experience with Kafka or other message brokers.
• Experience with cloud platforms: AWS, Azure, or GCP.
• Knowledge of CI/CD processes.
• Understanding of DevOps principles and observability solutions.
• Experience with frontend testing.
• Experience with design systems or component libraries.

Responsibilities:
• Develop new features and maintain existing services.
• Design and implement REST APIs.
• Build and improve frontend functionality using React.
• Integrate frontend applications with backend services.
• Integrate internal and external systems.
• Optimize performance and improve code quality.
• Participate in code reviews and technical discussions.
• Analyze and fix defects.
• Collaborate closely with backend, frontend, QA, and product teams.

What We Offer:
• Work remotely or from our offices in Kyiv or Warsaw — your choice.
• Full-time position.
• Standard 5/2 working schedule.
• 24 paid vacation days, sick leaves, and health insurance currently available in Ukraine, with other locations in progress.
• A friendly and supportive team where it’s easy to ask questions, learn, and be yourself.
• Coverage of professional events and learning opportunities.
• Birthday celebrations, team-building activities, and genuine human connections beyond work.
• Zero joules of energy to the aggressor state or any businesses affiliated with it.

Project: it's a modern AI-powered SaaS platform built for Swiss tax advisory firms. 

Tech stack: 

Frontend: React 19, TypeScript

Backend: Supabase, PostgreSQL

Responsibilities:

• Develop and maintain product features across the full stack.
• Build complex React interfaces for AI-powered document workflows.
• Design PostgreSQL schemas, SQL migrations, and RLS policies.
• Develop Supabase Edge Functions and backend services.
• Integrate and improve AI/LLM-powered features.
• Participate in architecture and technical decisions.
• Write and maintain automated tests.
• Optimize application performance, scalability, and security.
• Estimate tasks, identify risks, and contribute to planning.

• Collaborate directly with customers in English.

   

Requirements:

• 5+ years of commercial Full-Stack development experience.
• Strong expertise in React and TypeScript.
• Strong SQL and PostgreSQL skills.
• Experience designing secure backend systems and APIs.
• Experience integrating third-party APIs (AI/LLMs is a plus).
• Experience writing automated tests.
• Experience with Docker and modern development workflows.
• Ability to estimate tasks and work independently.
• English level B2+ (spoken and written).

Job Summary
We are looking for a Full Stack Developer with experience in React.js and Node.js. The ideal candidate has a strong backend focus, FinTech experience, and can independently own features from planning to release.

Requirements

• 3-4 years of experience with React.js and Node.js.
• Experience in FinTech, including lending, payment processing, banking integrations, or financial reporting.
• Experience building SaaS, CRM, ERP, or other data-heavy applications.
• Strong knowledge of PostgreSQL, TypeORM, Redis, and Docker.
• Experience with Express.js or NestJS.
• Experience designing and integrating REST APIs.
• Strong knowledge of Material UI.
• Clear communication in an async-first environment.
• Work independently and own features end-to-end.
• Active use of AI development tools such as Claude Code, Cursor, Codex, or AI agents.

Nice to Have

• Lending or mortgage experience.
• Financial calculations and interest schedules.
• Document generation and e-signatures.
• Workflow automation.
• Legacy system migration.
• AI-assisted financial workflows.

Benefits

• Regular performance and salary reviews. 
• Working with complex large-scale SaaS projects, from 6 months.
• 18 working days of vacation and 10 sick days.
• Compensation 50% for professional development cources. 
• Free Internal English classes.
• Company equipment. We’ll provide a laptop after 6 months of work. 
• Financial compensation of coworking 100% (during blackouts).
• Flexible work schedule, remote.

Are you passionate about building intelligent systems that can think, act, and adapt? We are looking for a AI-augmented Software Developer to join our team remotely from Albania, Europe, or Ukraine. 

At Sigma Software, we work on innovative AI-driven solutions that push the boundaries of technology. In this role, you will design, build, and optimize cutting-edge agentic AI systems, from autonomous agents to complex orchestration layers, for both greenfield products and established platforms. 

Why join us? You will have the opportunity to work with advanced AI tools, collaborate with top-tier engineers, and contribute to projects that redefine how AI interacts with the world — all while enjoying flexibility, professional growth, and a supportive global team. 

Job Description

DESIGN & DEVELOPMENT

• Build and maintain AI SDLC pipelines, tooling, and automation logic across the development lifecycle
• Implement agentic AI patterns, multi-agent workflows, and intelligent task automation
• Work with tools such as Claude Code, Cursor, Microsoft Copilot, and other AI engineering environments

RESEARCH & EXPERIMENTATION

• Evaluate emerging agentic AI models, frameworks, and toolkits
• Build POCs and prototypes to benchmark scalability, reliability, and architecture fit
• Propose optimal designs based on hands-on research and clear analysis of trade-offs

CONSULTING & COLLABORATION

• Work with product teams, architects, and clients to define requirements and shape agentic AI solutions
• Communicate complex technical concepts clearly to non-technical stakeholders
• Guide clients on AI tool adoption (both greenfield and brownfield) 

Qualifications

• 5+ years as a Software Engineer, including 1 year of extensive AI Agentic Systems experience 
• Strong practical development experience — JavaScript/TypeScript preferred; Python, Java, Go also acceptable 
• Hands-on experience implementing agentic AI architectures, AI orchestration frameworks, autonomous agents & multi-agent systems, MCP integrations 
• Solid understanding of AI model lifecycle, prompting, evaluation loops, and continuous improvement 
• Ability to work independently and own end-to-end technical delivery 
• Consulting experience or strong client-facing communication skills 
• Curiosity and experimentation mindset 
• Experience running POCs, technical evaluations, or benchmarking approaches 

WILL BE A PLUS

• Experience with vector databases, RAG, and embeddings 
• Background in backend engineering, MLOps, or system design 
• Understanding of LLM fine-tuning or model customization 
• Experience integrating AI into production-grade applications 

PERSONAL PROFILE

• Self-driven engineer with strong programming skills 
• Consulting mindset with ability to advise clients 
• Passion for experimenting with cutting-edge AI frameworks 
• Strong communication skills for cross-functional collaboration 
• Ability to deliver robust, scalable AI solutions