Jobs Fullstack

About YouScan

YouScan.io is one of the most successful Ukrainian SaaS companies. Our deep tech product, powered by in-house developed AI technology, is one of the leaders in the social listening space globally. The entire engineering department works on collecting billions of social media posts daily, processing them with cutting-edge technologies, and providing meaningful insights to our customers.
We are a creative, low-ego, team-spirited company. Our organization is very flat, and our team is small and talent dense. We particularly like people who are truthseeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code.

We really value innovation, bottom-up ideas, and execution.

We hold company-wide hackathons twice a year:
https://medium.com/youscan/are-you-afraid-of-hackathons-85a99081d8cf

We're in-person in a cozy office in central Kyiv with a beautiful terrace overlooking the historic center.

 

About the role

You'll join a small, self-contained squad building analytics products with and for some of the world's largest consumer brands.
These products are greenfield builds with real users on the other side from day one. The brand partner sees what you ship, and the feedback loop is short, sometimes uncomfortably so.  That's the appeal of the role, and it's also the bar.
 

Responsibilities:

• Build and ship features on a new product, from the ground up
• Own your work end to end: UI, API, data model, tests, deployment, and whatever breaks at 6pm on a Thursday.
• Work directly with the project manager to turn a partner's vague ideas into a smooth user experience
• Pull, blend, and model data from multiple sources - our own social listening pipeline plus partner-supplied datasets that will never arrive in the shape you'd like.
• Contribute to technical decisions and help shape the product’s overall architecture.
• Keep an eye on performance, scalability, and maintainability as the product grows.

What we're looking for

Someone who is a strong engineer and, above all, a good teammate: shares their thinking early, communicates clearly, brings ideas, listens properly, and can hold a different view without making it a fight.
You care about the product, not just the ticket. You're curious about how people actually use what you build. You're comfortable making a decision with incomplete information, asking the question nobody's asking, and taking something on without waiting to be assigned it.
 

Must-haves:

• Experience 4+ years working in product-focused teams (especially SaaS)
• Node.js, C#, or Python as backend language.
• Solid frontend skills - you can build a clean, responsive interface yourself, not just wire up an API for someone else. Experience with data visualization is a real plus.
• Hands-on experience with large-scale data systems
• You take strong ownership of your tasks.
• Curiosity about UX and product design — not just how it works, but how it feels to users.
• Comfort with making architectural decisions and trade-offs.
• A collaborative mindset: you value teamwork, feedback, and knowledge sharing
• Proactive, self-starter approach

Nice to have

• Exposure to marketing analytics, media measurement, or social data.
• Experience integrating LLMs into production features.

Recruitment process

• Interview with our Head of Talent Acquisition
• Intro call with the Hiring Manager
• Test task
• Technical interview
• Reference check

Perks:

• Flexible work options with some in-office days.
• Four-day workweek in summer.
• Unlimited paid time off.
• Medical insurance.
• Professional growth and development supported by the company.
• Work with a dynamic, highly engaged, and friendly team.
• Strong company culture where we encourage experiments, mistakes, and learning.

PwC is a global network of more than 370,000 professionals in 149 countries that turns challenges into opportunities. We create innovative solutions in audit, consulting, tax and technology, combining knowledge from all over the world.

PwC SDC Lviv, opened in 2018, is part of this global space. It is a place where technology is combined with team spirit, and ambitious ideas find their embodiment in real projects for Central and Eastern Europe.

What do we guarantee?

• Work format: Remote or in a comfortable office in Lviv - you choose.
• Development: Personal development plan, mentoring, English and Polish language courses.
• Stability: Official employment from day one, annual review of salary and career prospects.
• Corporate culture: Events that unite the team and a space where everyone can be themselves.

 
PwC is looking for a skilled Full-Stack Developer proficient in Python and JavaScript to build and maintain web-based solutions. You’ll work across the stack to support digital initiatives, from UI development to backend services and database design.

Key Responsibilities:

• Develop responsive, accessible UIs using HTML5, CSS3, and React or Angular;
• Build and maintain APIs and backend services with FastAPI, Django, or Flask;
• Design and manage databases (PostgreSQL, MongoDB);
• Ensure performance, security, and scalability across the stack;
• Collaborate with cross-functional teams to deliver high-quality solutions;
• Participate in code reviews and CI/CD workflows;
• Stay current with modern frameworks and best practices.

Required Skills:

• Strong experience with Python and JavaScript frameworks;
• Solid front-end skills (HTML5, CSS3, modern JS);
• Proficiency in RESTful API design and database management;
• Familiarity with Git, CI/CD, and secure coding practices;
• Strong problem-solving and communication skills.

 
Preferred:

• Experience in agile environments;
• Knowledge of Azure or AWS;
• Familiarity with Docker, Kubernetes, or GitOps;
• Exposure to AI or data-driven systems.

Policy statements:
https://www.pwc.com/ua/uk/about/privacy.html

The Role

We’re looking for a Strong Junior/Middle Full Stack Angular/.NET 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.

In this role, you’ll work closely with experienced developers, gaining hands-on experience in Angular, .NET Core, and MS SQL. 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 front-end development using Angular by designing and implementing user-friendly interfaces
• Support database maintenance tasks, including writing SQL queries and helping optimize performance
• 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), preferably in C#
• Hands-on (non-commercial) experience with:
  • .NET Core (EF Core, MVC, Onion Architecture, or CQRS)
  • SQL databases
• English proficiency at B2+ 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
• Experience with Angular (or any other JS) framework

What We Offer

📈  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!

PwC is a global network of more than 370,000 professionals in 149 countries that turns challenges into opportunities. We create innovative solutions in audit, consulting, tax and technology, combining knowledge from all over the world.

PwC SDC Lviv, opened in 2018, is part of this global space. It is a place where technology is combined with team spirit, and ambitious ideas find their embodiment in real projects for Central and Eastern Europe.

What do we guarantee?

• Work format: Remote or in a comfortable office in Lviv — you choose.
• Development: Personal development plan, mentoring, English and Polish language courses.
• Stability: Official employment from day one, annual review of salary and career prospects.
• Corporate culture: Events that unite the team and a space where everyone can be themselves.

We are seeking a Power Platform Full-Stack Associate to join our growing technology team. In this role, you will contribute to the design, development, and support of business applications and process automation solutions built on Microsoft Power Platform.

You will collaborate with business stakeholders, developers, and solution architects to deliver scalable solutions that improve operational efficiency and support digital transformation initiatives.

This role offers an excellent opportunity to develop expertise across the Power Platform ecosystem while working on enterprise-level projects.

Your responsibilities:

• Design, develop, test, and maintain Power Apps Canvas Applications.
• Build and support Power Automate cloud flows to automate business processes.
• Develop solutions leveraging Dataverse, SharePoint, and SQL data sources.
• Implement business logic using Power Fx.
• Create and maintain reusable components and application design patterns.
• Work with APIs, JSON payloads, and integrations with external systems.
• Participate in solution deployment and environment management across development and production environments.
• Troubleshoot application and workflow issues and provide ongoing support.
• Contribute to technical documentation and knowledge-sharing activities.
• Stay current with emerging Microsoft Power Platform and AI capabilities.

Key Requirements:

• 1+ years of hands-on experience with Power Apps and/or Power Automate.
• Experience building applications using Microsoft Power Platform.
• Understanding of Power Fx formulas and application logic.
• Experience working with Dataverse, SharePoint, or SQL databases.
• Basic understanding of relational database concepts and SQL queries.
• Familiarity with REST APIs and JSON.
• Knowledge of Git and version control principles.
• Strong analytical and problem-solving skills.

Nice-to-have:

• Experience with JavaScript, TypeScript, React, HTML, or CSS.
• Power Platform CLI and custom connectors.
• Azure Functions and Microsoft Graph API.
• Power BI integration.
• Power Automate Desktop (RPA).
• Microsoft Copilot Studio or AI Builder.
• CI/CD pipelines using Azure DevOps or GitHub Actions.
• Knowledge of Power Platform governance and Data Loss Prevention (DLP) policies.

Policy statements:
www.pwc.com/ua/uk/about/privacy.html

This is a fantastic opportunity to join a fast-growing company at the heart of the digital revolution. Our software product is revolutionising manufacturing through automation. We are trusted by global brands and work across sectors (mobility, consumer goods, machinery etc).

We have a talented and ambitious team. We value integrity and are passionate about our mission to revolutionise advanced manufacturing.

This is your opportunity to:

• Be part of a fast-growing software product company in advanced manufacturing.
• Learn and fulfil your potential in an open, knowledge-driven culture.
• Share in our ambitious vision and make a meaningful difference towards autonomous manufacturing.

Responsibilities: 

• Development of new features and new parts of the app.
• Work in a cross-functional Scrum team alongside Frontend and QA Engineers.
• Maintaining, improving and extending existing functionality.
• Сonstantly improving code organization and evolving application design.

You will be joining a well-versed team if you have:

• Bachelor’s Degree or Master’s Degree in Computer Science.
• Minimum of three years of experience in Node.JS development.
• Minimum of two years of experience in React.JS development.
• Experience with Sequelize, PostgreSQL, database design, microservices.
• Test automation coverage.
• Understanding of CI/CD.
• Git branching strategies.
• Scrum Agile principles and processes.
• English level - Intermediate and higher.

 Nice to have:

• AI-minded engineering mindset – ability to creatively apply AI tools and approaches to accelerate development and problem-solving.
• Experience using Cursor or AI-powered development workflows.
• Passion for continuous learning and exploring emerging technologies.

Our tech stack: microservices, Node.JS, React.JS, PostgreSQL, Kubernetes, AWS.

Про компанію

• Платформа ШІ-агентів дозволяє компаніям розгортати індивідуальні рішення на основі штучного інтелекту (такі як автоматизація документообігу, операційна аналітика та агенти штучного інтелекту) за лічені дні, а не місяці. 

Вимоги до кандидата:

• Освіта та фундаментальні знання: вища освіта в галузі Computer Science (бакалавр або магістр) з акцентом на алгоритми, структури даних та дискретну математику. Обов'язкове глибоке розуміння основ: асимптотичний аналіз (Big O, Theta, Omega), динамічне програмування, графи (BFS/DFS, найкоротші шляхи), дерева (бінарні, AVL, B-дерева), хеш-таблиці, черги, стеки та купи. Кандидати без формальної CS-освіти не розглядаються.
• Інженерний майндсет: Доведений досвід у розв'язуванні складних проблем з фокусом на ефективність, масштабованість та оптимальність. Ми очікуємо, що ви можете пояснити, чому вибрали певну структуру даних для задачі (наприклад, чому Trie краще за хеш-мапу для автодоповнення) та проаналізувати trade-offs (час vs. простір).

• Практичний досвід: Мінімум 2-3 роки в розробці, де ви застосовували CS-концепції на практиці (наприклад, оптимізація алгоритмів у production-коді). Знання мов програмування (JS, C++, Java, Python) на рівні, достатньому для competitive programming.

   

Бонуси (значно підвищують шанси):

• Призові місця на олімпіадах з програмування (IOI, ICPC, Google Code Jam, Facebook Hacker Cup) або регіональних змаганнях.
• Високий рейтинг на платформах: LeetCode (Knight+ або 2000+ rating), HackerRank (Gold+), Codeforces (Expert+ або 1900+ rating). Надсилайте посилання на профіль у резюме – ми перевіримо.
• Участь у хакатонах з фокусом на алгоритмічні задачі (наприклад, перемоги на HackMIT, AngelHack).

Важливо: Ми шукаємо тільки тих, хто має солідний теоретичний бекграунд і може довести його на технічному інтерв'ю (live coding з задачами на алгоритми). Якщо ви самоучка без формальної освіти чи досягнень у competitive programming, ця вакансія не для вас – ми не розглядаємо резюме без підтвердження CS-фундаменту. Подання: надішліть CV з прикладами розв'язаних задач (посилання на GitHub або LeetCode).

Над чим ви працюватимете

• Впровадження та налаштування розгортання платформи для корпоративних клієнтів на базі стеку JavaScript/TypeScript (Express, Vue.js), баз даних PostgreSQL. 
• Створення інтеграцій між платформою та клієнтськими системами
• Співпраця з внутрішніми командами для розуміння вимог клієнтів та їх перетворення на технічні рішення
• Внесок у розробку інструментів впровадження, документації та повторюваних процесів розгортання
• Виправлення неполадок та вирішення проблем під час та після розгортання
• Періодична участь у дзвінках клієнтам для збору вимог або надання технічних рекомендацій

-----------

About the Company

• Enterprise AI development platform that emerged from a hidden activity in 2025 thanks to $50+ million in funding.
• Main purpose: The platform allows companies to deploy customized AI solutions (such as document automation, operational analytics, and AI agents) in days, not months.
• Enterprise segment and deep integrations with enterprise business processes.
• Key features: The platform is model-agnostic, meaning users can use their own AI models, and it guarantees data privacy without training third-party models on customer data.

Candidate requirements:

• Education and fundamental knowledge: Higher education in Computer Science (Bachelor's or Master's) with a focus on algorithms, data structures, and discrete mathematics. A deep understanding of the fundamentals is required: asymptotic analysis (Big O, Theta, Omega), dynamic programming, graphs (BFS/DFS, shortest paths), trees (binary, AVL, B-trees), hash tables, queues, stacks and heaps. Candidates without a formal CS education will not be considered.
• Engineering mindset: Proven experience in solving complex problems with a focus on efficiency, scalability and optimality. We expect you to be able to explain why you chose a particular data structure for a problem (e.g. why a Trie is better than a hash map for autocompletion) and analyze trade-offs (time vs. space).

• Practical experience: Minimum 2-3 years in development, where you applied CS concepts in practice (e.g. optimization of algorithms in production code). Knowledge of programming languages ​​(JS, C++, Java, Python) at a level sufficient for competitive programming.

   

Bonuses (significantly increase your chances):

• Prize-winning places at programming olympiads (IOI, ICPC, Google Code Jam, Facebook Hacker Cup) or regional competitions.
• High rating on platforms: LeetCode (Knight+ or 2000+ rating), HackerRank (Gold+), Codeforces (Expert+ or 1900+ rating). Send a link to your profile in your resume - we will check it.
• Participation in hackathons with a focus on algorithmic problems (for example, victories at HackMIT, AngelHack).
• Important: We are only looking for those who have a solid theoretical background and can prove it at a technical interview (live coding with algorithmic problems). If you are a self-taught person without formal education or achievements in competitive programming, this vacancy is not for you - we do not consider resumes without confirmation of CS-foundation. Submission: send a CV with examples of solved problems (link to GitHub or LeetCode).

What you will be working on

• Implement and configure the deployment of a platform for enterprise customers based on a JavaScript/TypeScript stack (Express, Vue.js), PostgreSQL databases.
• Create integrations between the platform and customer systems
• Collaborate with internal teams to understand customer requirements and translate them into technical solutions
• Contribute to the development of implementation tools, documentation, and repeatable deployment processes
• Troubleshoot and resolve issues during and after deployment
• Periodic participation in customer calls to collect requirements or provide technical recommendations

Job Description
Front-End Development

Strong commercial experience with React
Proficiency in TypeScript
Experience building applications using Next.js
Experience developing and documenting reusable UI components with Storybook
Ability to interpret and implement designs from Figma
Experience writing unit and component tests using Jest
Strong knowledge of modern HTML and CSS, including CSS custom properties, responsive design, Flexbox and CSS Grid
Understanding of accessibility, browser compatibility and front-end performance best practices
Back-End Development

Strong commercial experience with ASP.NET Core and C#
Experience designing and developing secure, maintainable REST APIs
Experience with Azure Functions and serverless application development
Knowledge of Azure API Management
Experience working with Microsoft SQL Server, including database design and query optimisation
Experience working with Azure Cosmos DB
Understanding of authentication, authorisation and API security, ideally Duende Identity Server
Job Responsibilities
Design, implement and unit test core application components running on Azure
Drive and participate in the functional design
Contribute to the review and analysis of business requirements and development of code reviews and technical designs/specifications
Participate in SCRUM

Department/Project Description
The client is a holding company that administers association football clubs including Manchester City F.C. As for the product, it is mancity.com website and all innfrastructure around. We are using Scrum. Technologies/Tools: - Back-end: C#, .Net; ASP.NET; ASP.NET Web API; Umbraco; MS SQL. - Front-end: HTML/CSS, Angular, WebPack. - Other: Jira, Git, Docker, MS Azure.

About the Role

We’re a lean product team developing a consumer commerce platform that combines real-time 3D interactions with the purchase of physical products. The product also includes a real-money wallet and operational workflows for order processing and fulfillment.

Our technology stack is built entirely around TypeScript. The engineering team is small and experienced, with engineers working closely with and reporting directly to the CTO, allowing for fast communication and decision-making.

We’re looking for a Full-Stack Engineer to work across a customer-facing web application, internal operational tools, and the Node.js services supporting both.

The scope is varied: you might build a new feature for the customer-facing React application together with the required API and data model, then move on to an internal workflow that improves operational efficiency or a background process handling inventory-related data.

The engineering team has a thorough code-review culture, with senior engineers actively reviewing pull requests and maintaining a strong focus on testing, code quality, and continuous improvement.

What You'll Do

• Develop end-to-end product functionality using React 19, Vite, TanStack Query, CSS Modules, Node.js/Fastify, PostgreSQL, and RabbitMQ.
• Build and improve internal operational tools covering areas such as catalog management, orders, fulfillment, and financial workflows.
• Create and maintain shared API contracts using Zod schemas to keep frontend, backend, and worker services aligned.
• Write automated tests alongside development using Vitest for unit/component testing and Playwright for important end-to-end scenarios.
• Take part in code reviews, technical discussions, and post-incident analysis.
• Take ownership of the features you build through deployment and production operation.

What We're Looking For

• Around 3–5 years of professional full-stack engineering experience.
• Experience with TypeScript is preferred, although engineers coming from .NET or Java with solid frontend experience are also welcome.
• Good knowledge of modern React, including hooks, rendering behavior, state/data-fetching patterns, and component lifecycle.
• Practical experience developing server-side APIs and working with relational databases and SQL.
• Ability to design database tables, write efficient queries, and understand indexing fundamentals.
• A quality-focused approach to development, including testing your own work rather than treating testing as a separate final step.
• Clear and pragmatic communication and the ability to collaborate effectively through code reviews and technical discussions.

Nice to Have

• Experience with message queues or brokers such as RabbitMQ.
• Familiarity with Redis or similar caching technologies.
• Experience with Drizzle or another strongly typed ORM.
• Hands-on Playwright experience, including more complex scenarios beyond basic happy-path testing.
• Interest in 3D, animation, or visually creative frontend development.

Technology Stack: TypeScript · React 19 · Vite · TanStack Query · Node.js · Fastify · PostgreSQL · RabbitMQ · Zod · Vitest · Playwright

About the Role

We’re a lean product team developing a consumer commerce platform that combines real-time 3D interactions with the purchase of physical products. The product also includes a real-money wallet and operational workflows for order processing and fulfillment.

Our technology stack is built entirely around TypeScript. The engineering team is small and experienced, with engineers working closely with and reporting directly to the CTO, allowing for fast communication and decision-making.

We’re looking for a highly experienced individual contributor to take technical ownership of backend architecture across a customer-facing web product, an internal operations platform, and the supporting services.

A key part of the role involves systems where correctness and reliability have direct financial impact, including wallet and ledger functionality, transaction settlement, verifiable outcome generation, and fulfillment workflows.

The platform follows an event-driven architecture within a TypeScript monorepo. It includes separate Fastify BFF services for customer and administrative applications, asynchronous workers, and shared domain components backed primarily by PostgreSQL. MongoDB supports analytics use cases, Valkey is used for caching and presence, RabbitMQ handles messaging, and S3-compatible storage with CDN delivery manages object distribution.

The infrastructure runs on AWS ECS with infrastructure-as-code and automated CI/CD. You’ll work closely with the CTO on architectural direction and the continued evolution of the platform.

What You'll Do

• Take ownership of architectural decisions across backend services, including service boundaries, data ownership, idempotency, outbox patterns, caching, and failure handling.
• Document important technical decisions and revisit them as requirements and system constraints evolve.
• Design and evolve financially sensitive functionality, including double-entry wallet accounting, payments and withdrawals, inventory settlement, and auditable outcome-generation mechanisms.
• Work across layers when necessary, from database schemas and Drizzle migrations through domain logic, Fastify APIs, asynchronous consumers, and React interfaces.
• Provide technical leadership for the internal operations platform supporting catalog, fulfillment, finance, and customer-support workflows.
• Establish engineering standards around contract-first APIs, deterministic testing, database migrations, and code-review quality.
• Mentor other engineers while maintaining a hands-on individual-contributor role.
• Own production reliability through observability, incident response, capacity planning, performance analysis, and ongoing reliability improvements.

What We're Looking For

• 8–9+ years of professional software engineering experience, including several years with direct responsibility for architecture and technical decisions in production systems.
• Proven experience defining service boundaries, selecting appropriate storage technologies, and scaling production systems.
• Practical understanding of capacity planning, caching strategies, database connection management, performance bottlenecks, and production debugging.
• Ability to evaluate architectural trade-offs such as consistency vs. availability, synchronous vs. asynchronous communication, caching vs. source-of-truth access, and build vs. buy decisions.
• Strong server-side engineering background with Node.js/TypeScript, .NET, or Java. Engineers coming from .NET or Java should be comfortable transitioning to TypeScript.
• Deep experience with relational databases, including schema design, transactions and isolation levels, indexing, and migrations of live production systems.
• Experience using document databases and caching systems where they provide clear advantages alongside relational storage.
• Production experience with event-driven architectures, message brokers, idempotent processing, outbox patterns, and delivery guarantees.
• Experience owning financially sensitive systems such as payments, billing, ledgers, trading, or similar transaction-heavy functionality.
• Ability to document architectural decisions clearly and challenge technical assumptions when necessary.

Nice to Have

• Experience with AWS ECS, infrastructure as code, and GitHub Actions-based CI/CD.
• Experience with CDN infrastructure and object storage at scale.
• Background in regulated or compliance-sensitive consumer products such as fintech, real-money gaming, or marketplaces.
• Experience managing developer experience and tooling in large monorepos using technologies such as pnpm workspaces or Turborepo.

Technology Stack: Node.js · TypeScript · Fastify · PostgreSQL · Drizzle · MongoDB · Valkey · RabbitMQ · Zod · AWS ECS · S3/CDN · React 19 · Vite · pnpm · Turborepo

Sovrano AI, SL is a Barcelona company selling verified European expert capacity to frontier AI labs, robotics companies and enterprise AI teams. A network of 400,000 or more professionals, 100 or more partner universities across Europe, EFMD certification, 23 languages, a funding round led by b2venture, and a proprietary benchmark in EuroExec.

The job

You build the interview agent: a real time voice system that talks to candidates, listens, and holds a conversation that has to feel right on the first attempt. Speech to text on the way in, an LLM in the middle, text to speech on the way out, and a latency budget measured in hundreds of milliseconds. Someone interrupts halfway through a sentence and the agent handles it the way a person would. A model stalls, and the failure sounds like a pause rather than a crash.

Real time voice is unforgiving in a way that ordinary product work is not. There is no loading spinner. It either feels like a conversation or it does not, and the difference is measured in milliseconds you have to go and find.

The interface is as much of the product as the model behind it. You lead on the UI, and you care how it feels rather than only whether it works.
 

The stack

The agent is Python on LiveKit, with streaming speech to text and streaming text to speech either side of an LLM. The interface and the wider platform are Node.js, TypeScript and React, on PostgreSQL and Google Cloud. You work across both halves.
 

You own

• The interview agent end to end: the real time voice pipeline, the model integration, and the prompt and evaluation loop behind it
• Latency, interruption, endpointing, turn taking, and what happens when a model or a network stalls mid sentence
• The candidate facing interface, from interaction design through to shipped frontend
• Model quality, measured rather than asserted. Eval datasets, regression testing on prompt changes, and knowing whether a change made the conversation better or only different
• Integrations that bring the agent, its output and its evidence into the rest of the platform

The experience we require
 

• Five or more years building production software, full stack, with strong frontend depth in TypeScript and React
• Real time audio shipped to production. Streaming speech to text and text to speech, WebRTC or an equivalent transport, and the work that comes with them: voice activity detection, endpointing, turn taking and barge in
• LLM APIs in production. Streaming, tool calling, structured output, first token latency, cost, and what the product does when the model answers wrongly in front of a user
• You measure latency rather than estimate it. A p50 and a p95 you can quote per stage of the pipeline, and tracing good enough to say which hop is the expensive one
• Genuine UI and UX judgement. You take a rough idea to a designed, shipped interface and can explain the choices
• AI native. You already work with AI tools daily and build what you need without being shown how
• English at B2 or above
   

Also worth having

• LiveKit, or another real time agent framework run in production
• A view on the providers at each stage and why: Deepgram, AssemblyAI or Whisper for speech to text, ElevenLabs or Cartesia for speech out
• Speech to speech models, OpenAI Realtime or Gemini Live, and a position on when collapsing the pipeline is worth the control you give up
• Async Python and FastAPI
• Evaluation tooling: Langfuse, LangSmith, or something you built yourself
• Voice treated as personal data: redaction, retention and access control

Sovrano AI, SL is a Barcelona company selling verified European expert capacity to frontier AI labs, robotics companies and enterprise AI teams. A network of 400,000 or more professionals, 100 or more partner universities across Europe, EFMD certification, 23 languages, a funding round led by b2venture, and a proprietary benchmark in EuroExec.
 

The job

You are the engineering lead on the platform, working alongside the CTO every day. Platform architecture, scaling, infrastructure and data are yours. When a query gets slow, when a service will not hold the next order of magnitude, when a feature needs to be designed before it can be built, that is your call to make.
 

This is roughly 70 percent building and 30 percent raising the standard of everyone else's work: reviewing pull requests, setting the code quality bar, unblocking teammates and making decisions that stop being reversible three months later.
 

You own

• Platform architecture and the scaling path, from schema and query performance to infrastructure and cost
• Delivery of the harder platform features end to end, from design through production
• Code quality across the codebase: review standards, testing, what ships and what does not
• Technical decisions made with the CTO, and the ones made on your own when the CTO is not in the room
• The engineers around you getting better, through review, pairing and design conversations
   

The experience we require

• Seven or more years building production software, with real time spent on systems that grew past their first architecture
• Depth in relational data: schema design, query optimisation, and diagnosing performance from first principles rather than by guessing
• Cloud infrastructure and CI/CD owned in production, not consumed as a service someone else runs
• A track record of raising other engineers' work through code review and design feedback
• AI native. You already work with AI coding tools daily and build the tooling you need without being shown how
• English at B2 or above
   

Also worth having

• Experience in an AI or data platform company
• Time as a founding or first senior engineer somewhere
• Comfort moving across the stack when the work demands it

Project description

The project focuses on developing advanced software solutions for the oil and gas industry, supporting key stages of the reservoir lifecycle, including exploration, development, production, operations, maintenance, and abandonment.

The successful candidate will join the Information Management and Platform Technologies Development team and contribute to the design and development of next-generation software products. The role offers an opportunity to work with modern technologies, apply innovative ideas, and build solutions used in complex energy industry environments.

Responsibilities

Key Responsibilities/Accountabilities:

Knowledge of software engineering best practices (including requirements analysis, system design, modularity, version control, testing, documentation, etc.) for productivity, collaboration, quality, and maintainability.

Knowledge of how a component fits into a larger ecosystem of products and services.

Understanding of how these different pieces work together, and communicate with them (using library calls, REST APIs, database queries, etc.)

Know how to build appropriate interfaces for components that others will depend on. Knowledge of basic system design patterns to avoid bottlenecks and let your algorithms scale well with increasing volumes of data.

Perform research and development tasks.

Expected to design, code, test, do troubleshooting and document engineering systems applications by following the software development lifecycle.

Accomplishes engineering and organization mission by completing related results as needed.

Updates job knowledge by studying state-of-the-art development tools, programming techniques, and computing equipment; participating in educational opportunities; reading professional publications; participating in professional organizations.

Skills

Must have

Degree in Computer Science, Engineering, or equivalent. Master's preferred

Software Development Fundamentals

Strong understanding of Object-Oriented Design and Principles

5+ years of professional experience with Java and Angular

Build & CI/CD: Git Ci/CD, Helm

Database background: Posgtess

REST API Express

Hapi

Self-motivated

Problem Solving skills

Works well within a team

Excellent communication skills

Nice to have

Web front-end technologies and tools: HTML5, CSS, SASS, JavaScript, Angular 16+, Angular CLI, Typescript, NPM, and VS Code.

Web back-end technologies: RESTful APIs using Microservices (NodeJS, C#, C++, Python), Express, JSON, OData, Web Sockets, and Java EE.

Testing: JEST, Karma/Jasmine, E2E testing with Protractor.

MAVEN, Jenkins & Ansible, Containerization.

Cloud: Knowledge in cloud technologies (Azure and Amazon)

Location: Remote
Employment: Full-time
Project: Long-term
Rate: up to $25/hour
 

Open positions: 5

About the Role

We are looking for 5 Senior Full-Stack Developers with a strong backend focus to join a long-term project and collaborate directly with a UK-based engineering team.

The ideal candidate is a mature and independent engineer with deep commercial experience in Node.js, strong hands-on expertise with Nest.js, PostgreSQL and AWS, and solid commercial experience with React.

This role is particularly suitable for engineers who are comfortable taking ownership, understanding existing architecture, solving complex technical problems, and contributing to technical decisions rather than simply implementing isolated tasks.

Requirements

Must-have:

• 7+ years of commercial software development experience with Node.js, with a strong backend focus
• Strong hands-on experience with Nest.js
• Solid commercial experience with React
• Strong experience designing and building REST APIs and backend services
• Strong knowledge of PostgreSQL
• Practical experience with AWS, including:
  • AWS Lambda
  • ECS
  • API Gateway
  • related AWS infrastructure and services
• Good understanding of software testing practices
• Experience with Git workflows
• Experience working with CI/CD pipelines
• Strong analytical and problem-solving skills
• Ability to work independently and take ownership of technical tasks
• Upper-Intermediate English (B2+) or higher for daily communication with the client's UK-based team

Nice to Have

• Experience designing scalable or distributed backend systems
• Microservices architecture experience
• Docker / containerized environments
• Experience with event-driven or serverless architectures
• Infrastructure-as-Code experience
• Experience participating in architecture and technical design discussions
• Experience mentoring developers or conducting code reviews

Responsibilities

• Develop and maintain backend services using Node.js and Nest.js
• Design, implement, and maintain REST APIs
• Develop and maintain frontend functionality using React
• Work with PostgreSQL databases, including data modeling and query optimization
• Build and maintain integrations with AWS services
• Contribute to architecture and technical decisions
• Write clean, maintainable, and testable production code
• Participate in code reviews
• Troubleshoot and solve complex production and development issues
• Work with CI/CD pipelines and modern Git-based development workflows
• Collaborate directly with engineers and stakeholders from the client's UK team
• Take ownership of features from technical analysis through production delivery

What We’re Looking For

Beyond the technical stack, we are looking for senior engineers with a strong engineering mindset: proactive, responsible, technically curious, and comfortable working without constant supervision.

You should be able to understand the broader product and architecture context, challenge technical decisions when necessary, suggest solutions, and take responsibility for the quality of your work.

Long-term remote project with a strong international engineering team.

Lead Engineer | Node.js, React Native, AI Agents

Location: London / hybrid preferred, or remote from Central & Eastern Europe
Level: Mid-to-Senior, hands-on Lead
Employment: Full-time, permanent

About the company

We are an early-stage UK product company building an AI-powered platform focused on professional relationships and network intelligence.

The product combines a social graph, relationship data and an AI agent that helps users identify relevant people, understand their network and strengthen important connections.

We are looking for a Lead Engineer / Founding Senior Engineer who will own the technical architecture, write production code and help grow the engineering team.

This is a hands-on engineering role, not a pure management position.

Tech stack

• Node.js / TypeScript / Express
• React Native + Expo
• MongoDB Atlas
• Atlas Vector Search + BM25 / hybrid retrieval
• OpenAI / custom LLM tool-calling agents
• AWS EC2, Cognito, S3
• Docker, Nginx
• GitHub Actions / CI/CD

Responsibilities

• Own technical architecture and production infrastructure
• Ship features across backend, mobile and AI agent layers
• Build and improve LLM agents, prompts, tool-calling flows and evaluation
• Mentor engineers and establish strong engineering practices
• Implement privacy-by-design and GDPR requirements
• Build and use synthetic data for development, testing and model evaluation
• Own CI/CD, monitoring, secrets management and incident response
• Own application and infrastructure security
• Secure AI agents against prompt injection, data leakage and unintended tool actions
• Work directly with the Founder on product and architecture decisions

Must-have

• 4+ years of professional software engineering experience
• Strong Node.js / TypeScript backend experience
• Experience owning real production systems
• Comfortable across backend, frontend/mobile and infrastructure
• MongoDB or similar document database experience
• Hands-on experience building LLM agents and prompting systems
• Experience with agent tool usage and evaluation
• Practical GDPR and data privacy knowledge
• Strong security fundamentals
• Understanding of AI-agent risks such as prompt injection, data leakage and unintended actions
• Experience working with synthetic data
• Production deployment, monitoring and incident-response experience
• Previous mentoring or technical leadership experience
• Comfortable with ambiguity and a fast-moving startup environment

Nice-to-have

• React Native / Expo
• RAG / vector search
• AWS Cognito
• Previous Tech Lead, CTO or founding engineer experience
• Application security / pentesting background
• Experience securing LLM / AI-agent applications

Compensation

Competitive salary + equity depending on experience and location.

We are looking for someone interested in a long-term role and growing together with the company, not a freelance or short-term contract position.

We are looking for a Middle+ / Senior Full-Stack Developer to join a team working on a modern SaaS platform in the healthcare domain.

The project focuses on a healthcare scheduling and visit management platform that helps healthcare organizations coordinate appointments, field visits, communications, and operational workflows. The system also includes integrations with external healthcare services and third-party tools, as well as real-time communication features used in day-to-day healthcare operations.

The role combines backend development with Python/Django and frontend development with Angular/TypeScript, with a strong focus on integrations, real-time communication, and scalable cloud-based solutions.

Strong backend expertise is slightly more important for this position than frontend expertise.

Додаткові переваги:

• Long-term cooperation on a mature SaaS product
• Fully remote work format
• Full-time or part-time engagement options
• Opportunity to work on a real-world healthcare product
• Modern technology stack with a focus on real-time communication and integrations
• Opportunity to work with integration-heavy and scalable SaaS solutions

Requirements:

• 5+ years of professional full-stack software development experience
• Strong backend development experience with Python and Django
• Experience with Django REST Framework (DRF) and/or Django Ninja
• Strong frontend development experience with Angular and TypeScript
• Experience with PostgreSQL and relational database design
• Experience building RESTful APIs and modern web applications
• Strong understanding of software architecture and application design
• Experience working with real-time communication or integration-heavy applications
• Nice to Have:
• Experience with Hasura and GraphQL
• Experience with Apollo Client
• Experience with Redis, Django Channels, and WebSockets
• Experience with Docker and Docker Compose
• Experience with GitLab CI/CD
• Experience with OpenTelemetry
• Experience integrating Twilio, Firebase, FCM, or APNS
• Experience with SOAP/XML integrations
• Experience integrating with external healthcare systems
• Familiarity with Swift/iOS or Java/Android development
• Experience with Ionic and Capacitor

Responsibilities:

• Develop and maintain backend services using Python, Django, DRF, and Django Ninja
• Develop and maintain frontend applications using Angular and TypeScript
• Build and optimize REST and GraphQL APIs
• Design and maintain PostgreSQL database schemas and data models
• Develop real-time communication features using WebSockets and Django Channels
• Integrate third-party communication, healthcare, and analytics services
• Collaborate with cross-functional teams to design and deliver new platform functionality
• Participate in code reviews, testing, and continuous improvement initiatives
• Troubleshoot production issues and optimize system performance

Індустрія:

Software Development

Розташування:

Sweden

Про проєкт:

Systems integration and legacy modernization - analyze business-critical systems, understand their architecture and constraints, and extend them without breaking existing functionality. Modern web and application development - build digital services where technology, user experience, and business goals need to align. Projects use React and TypeScript on the frontend, with Python/Django or PHP/Drupal on the backend, connected through REST APIs and GraphQL, backed by PostgreSQL and Redis. AI-driven business solutions - help clients understand how AI creates real business value, then implement that in practice rather than as a proof of concept.

Про клієнта:

A digital agency specializing in web and mobile development projects. The company positions itself as entrepreneurially driven and technology-strategic, combining cognitive science, strategy, communication, technology, and design in its service offering.
They start by understanding the client's business goal and user needs before selecting technology, rather than leading with a preset tech stack. They work closely with both marketing/communications teams and IT departments, aiming to get involved before the solution is decided. They are a part of a larger group of independent specialist companies operating under a shared alliance, and hold a partnership with a professional sports club for networking purposes. Client base spans automotive, marine equipment, healthcare (telemedicine), sports and events, food retail, hospitality, and B2B sectors, with many engagements sourced through referral.