Jobs at Djinni

FlexMade is looking for an Email Marketing / Marketing Automation Specialist to join a long-term project for a U.S.-based digital media company.

This role is focused on email marketing operations and automation inside Blueshift CDP, including building email flows, working with user segments, personalization logic, and ensuring high-quality delivery.
It is not a pure HTML email development role — most of the work happens through automation, logic configuration, and low-code tools within the CDP.
 

Team & collaboration format

• The email/automation team currently consists of 4 people (team lead + 3 specialists).
• Long-term collaboration is expected.
   

How the work is structured

Most day-to-day tasks are performed inside Blueshift CDP, a large platform for email marketing and automation.

The role includes working with:

• email sequences and automation flows;
• user segmentation (e.g., users interested in Health, Money, Universities, etc.);
• automation logic, including:
  • first email → delay → follow-up;
  • if / else conditions;
  • triggers based on user actions on the website;
  • time-based sends after specific events.
     

Low-code & visual configuration

A significant part of the role involves low-code and visual setup, such as:

• working with drag-and-drop editors;
• selecting and configuring existing templates;
• setting conditions for when specific content blocks are displayed
  (e.g., different images or messages depending on the scenario or segment).
   

About templates and technical work

This role is not about constant manual HTML email coding or working in a code editor all day.

• Most templates are simple, classic newsletter formats:
  • no complex animations,
  • no parallax or unstable effects.
• In many cases, templates are configured directly inside the platform using visual tools.
• HTML / CSS / Liquid are still important, but mainly for:
  • adapting and fine-tuning templates;
  • configuring personalization and dynamic content;
  • fixing bugs;
  • testing and quality control.
     

What kind of specialist we are we looking for

The ideal candidate:

• feels comfortable working with CDPs and email marketing platforms;
• can logically and carefully build and maintain email automations;
• is highly detail-oriented and quality-focused:
  • correct segmentation,
  • relevant content for the right audience,
  • avoiding situations where users receive incorrect or irrelevant emails;
• communicates proactively, asks clarifying questions, and aligns decisions with stakeholders — rather than executing tasks blindly.
   

Communication & English

• At the beginning, there will be a lot of live communication, including:
  • video calls,
  • discussions around automation logic,
  • joint setup of initial scenarios.
• Therefore, confident spoken English is required, not just written communication.

Join a Company That Invests in You

Seeking Alpha is the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join Seeking Alpha to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We're Looking For

Seeking Alpha is looking for a Senior Data Engineer responsible for designing, building, and maintaining the infrastructure necessary for analyzing large data sets. This individual should be an expert in data management, ETL (extract, transform, load) processes, and data warehousing and should have experience working with various big data technologies, such as Hadoop, Spark, and NoSQL databases. In addition to technical skills, a Senior Data Engineer should have strong communication and collaboration abilities, as they will be working closely with other members of the data and analytics team, as well as other stakeholders, to identify and prioritize data engineering projects and to ensure that the data infrastructure is aligned with the overall business goals and objectives.

What You'll Do

• Work closely with data scientists/analytics and other stakeholders to identify and prioritize data engineering projects and to ensure that the data infrastructure is aligned with business goals and objectives
• Design, build and maintain optimal data pipeline architecture for extraction, transformation, and loading of data from a wide variety of data sources, including external APIs, data streams, and data stores. 
• Continuously monitor and optimize the performance and reliability of the data infrastructure, and identify and implement solutions to improve scalability, efficiency, and security
• Stay up-to-date with the latest trends and developments in the field of data engineering, and leverage this knowledge to identify opportunities for improvement and innovation within the organization
• Solve challenging problems in a fast-paced and evolving environment while maintaining uncompromising quality.
• Implement data privacy and security requirements to ensure solutions comply with security standards and frameworks.
• Enhance the team's dev-ops capabilities.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field
• 2+ years of proven experience developing large-scale software using an object-oriented or functional language.
• 5+ years of professional experience in data engineering, focusing on building and maintaining data pipelines and data warehouses
• Strong experience with Spark, Scala, and Python, including the ability to write high-performance, maintainable code
• Experience with AWS services, including EC2, S3, Athena, Kinesis/Firehose Lambda and EMR
• Familiarity with data warehousing concepts and technologies, such as columnar storage, data lakes, and SQL
• Experience with data pipeline orchestration and scheduling using tools such as Airflow
• Strong problem-solving skills and the ability to work independently as well as part of a team
• High-level English - a must. 
• A team player with excellent collaboration skills.

Nice to Have:

• Expertise with Vertica or Redshift, including experience with query optimization and performance tuning
• Experience with machine learning and/or data science projects
• Knowledge of data governance and security best practices, including data privacy regulations such as GDPR and CCPA.
• Knowledge of Spark internals (tuning, query optimization)

At Creava, we are looking for a designer who enjoys working with various products, platforms, and industries. You will have the opportunity to influence the quality of digital solutions, grow your skills, and contribute to meaningful projects. We value speed, communication, thoughtful approaches, and responsibility for results.

What we offer:

• Diverse projects: products, web and mobile applications for both B2B and B2C.
• A professional team that shares knowledge and supports growth.
• A flexible schedule and remote work options.
• 21 paid vacation days plus sick leave.
• Education compensation (10% of the cost).

What we expect:

• 3+ years of experience in UI/UX design.
• A portfolio with real projects in Figma (independently completed).
• Strong knowledge of Figma: components, auto-layouts, design tokens.
• Ability to structure and present projects, awareness of design trends, and the ability to justify your decisions.
• Experience in designing complex logic, creating user flows, interactive prototypes, and conducting research.
• Skills in responsive and adaptive design.
• Sufficient level of English to present work and understand requirements (real-world experience)
• Self-organization and the ability to work at different paces, including fast delivery when needed.

Nice to have:

• Experience with interface libraries (Material UI, Ant Design, etc.).
• Background or experience in graphic design and animation.
• Initiative in improving internal processes..

What you will do:

• Design web and mobile applications: from research to final mockups.
• Create interactive prototypes, user flows, and sitemaps.
• Collaborate with PMs, developers, and other designers.
• Manage several projects in parallel.
• Stay up to date with design trends and apply them in practice.
• Build and maintain component libraries.
• Conduct research to support design decisions.

We are looking for someone who is eager to work closely with the team and who sees UX/UI design as their passion.

If this sounds like you, send us your CV and Figma portfolio. We want to see how you structure and present your projects to understand your approach.

We look forward to meeting you! ✨

Backend Developer (Ruby on Rails, APIs) - Mid-Level

We’re hiring a mid-level Backend Developer (Ruby on Rails) to join our on-site team in Kyiv. You’ll work on U.S.based products, building and scaling API-driven backend services, and collaborating closely with experienced engineers and product teams.

⚠️ Important

• On-site / Hybrid remote UKRAINE Only. 
• NO full-time remote

What You’ll Do

• Build and maintain RESTful APIs using Ruby on Rails
• Implement business logic, authentication, and third-party integrations
• Design and optimize relational database schemas and queries (PostgreSQL / MySQL)
• Collaborate with frontend, mobile, and product teams
• Write clean, maintainable, well-tested code following Rails best practices
• Create and maintain unit and integration tests
• Work with CI/CD pipelines and automated testing
• Participate in code reviews and iterative delivery

What We’re Looking For

• 3+ years of commercial experience with Ruby on Rails
• Hands-on experience building API-first applications
• Solid understanding of REST, JSON, JWT authentication
• Strong knowledge of ActiveRecord and relational databases (Postgres or MySQL)
• Experience with RSpec (unit, request, integration tests)
• Comfortable with Git workflows and Agile teams
• Practical experience using Postman, Swagger, or similar API tools
• Familiarity with background jobs (Sidekiq / ActiveJob)
• Pragmatic mindset — focus on shipping value, not over-engineering
• Willingness to learn and improve with team support

Nice to Have

• Experience with service-oriented architectures or microservices
• Exposure to API performance optimization and caching
• Familiarity with Docker (Kubernetes is a plus)
• Interest in or basic exposure to Go / Golang

What You’ll Get

• On-site Kyiv team with strong engineering culture
• Free on-site parking
• Daily lunches, snacks, drinks
• Performance-based bonuses
• Work on real, high-impact U.S. products
• Clear growth path as the product and team scale

CLUST is a venture builder where successful businesses grow.
Young entrepreneurs launch and scale projects within our ecosystem, and specialised professionals realise their professional potential. We aim to work with talented entrepreneurs to learn and turn great ideas into profitable businesses.

Now, we’re looking for a PPC Specialist for a Health&Fitness company — a genuinely strong performer who will own and scale Google Media, strengthen performance efficiency, and help us grow in Tier-1 markets with a clear ROI focus.

What to expect:
— Real ownership: you’ll shape how Google Media grows, end to end.
— Tier-1 focus: US and other priority markets.
— Startup pace: flat structure, transparency, quick decisions, no red tape.
— Supportive leadership: we value speed, creativity, and initiative — and give you the trust to act.
— Strong team around you: you’ll work closely with Growth/UA, Product, Creative, and Analytics.

What you’ll do:
— Own Google Media (Display + Demand Gen): build the structure, scale, and optimize toward ROI and growth.
— Ramp up fast (first 1–2 months): grow sustainably, not through one-time spikes.
— Support Google Search (light-touch): keep it stable, share insights, stay aligned with the growth strategy.
— Make scaling easier: improve processes and automation (rules/scripts, feed-based setups, smart bidding, workflows).
— Think in funnels: look beyond ads into landing flows and conversion steps, and suggest improvements.
— Turn data into action: spot shifts, find drivers, and translate them into clear next steps (creatives, audiences, bidding, placements, feeds, landing flows).
— Work with creatives: analyze what’s working (angles, hooks, formats) and run structured tests.
— Track the market: monitor competitors and trends to find new targeting and messaging angles.
— Collaborate cross-functionally: align with Growth/UA, Product, Creative, and Analytics to maximize ROI.
— Help grow TikTok: support or lead initial scaling with ROI discipline and a clear testing approach.

What we’re looking for:
— 3+ years in PPC with hands-on ownership of Google Ads.
— Budget ownership: experience managing $50k+/month total spend with ROI-first decisions.
— Google Search + web funnels: experience with landing flows, conversion tracking, and funnel optimization.
— Demand Gen/Display: proven scaling from $20k/month+.
— Creative analysis: you can clearly explain what’s working, what’s not, and what to test next.
— Automation: practical experience with rules/scripts, feeds, smart bidding strategy, and workflow automation.
— Strong analytics: you can turn complex performance data into simple, high-impact actions.
— Ownership + communication: you can explain what’s happening, why, and what we do next.
— English: B2 or higher.

Nice to have:
— Domain experience: Health & Fitness, Education, or MedTech.
— TikTok Ads expertise.

What we offer:
— Work from anywhere with a fully remote setup that adapts to your lifestyle.
— Flexible working hours that align with your most productive rhythm.
— Basic benefits package, including paid vacation, sick leave, and more.
— Personal and professional support, with advocacy available when you need a hand.
— Access to a curated corporate library filled with resources to fuel your continuous learning and development.

We’re not looking for someone to just “join the team” — we’re looking for someone ready to shape the product, lead meaningful growth, and make an impact from day one.
If that sounds like you — send over your CV, and let’s talk!


 

Format: Full-time
Compensation: Fixed salary + %
Work format: Remote

Responsibilities:

• Working with the automated lead generation system Convertix.io (must-have)
• Adjusting and fine-tuning job application criteria (niche, budget, keywords, filters)
• Handling incoming responses from clients
• Communicating with clients and guiding them to:
  • a call, or
  • a direct deal
• Client handover after agreements are reached

Requirements:

• Mandatory experience with Convertix.io
• Hands-on experience with Upwork (practical, not theoretical)
• Understanding of the funnel: proposal → reply → call → deal
• Confident written English (B2+)
• Ability to lead clients to a decision, not just reply to messages

📩 How to apply

In your application, please include:

1. Your experience with Convertix.io (what exactly you configured)
2. Your experience with Upwork

3. Your average reply / interview rate

Format: Full-time
Compensation: Fixed salary + % per closed deal
Work format: Remote

Responsibilities:

• Working with the automated lead generation system Convertix.io (must-have)
• Monitoring and fine-tuning lead generation criteria (niche, budget, keywords, filters)
• Leading sales conversations with clients (chat-first)
• Qualifying leads and identifying real buying intent
• Negotiating pricing, scope, and timelines

Requirements:

• Proven experience with Convertix.io
• Strong hands-on experience with Upwork sales (not theory)
• Clear understanding of the sales funnel: proposal → reply → negotiation → deal
• Confident written English (B2+ / C1 preferred)
• Strong negotiation and closing skills
• Ability to push deals forward and drive clients to a decision

How to apply:

In your application, please include:

1. Your experience with Convertix.io (what you managed or configured)

2. Your Upwork sales experience

3. Your average reply rate / close rate

Format: Full-time
Compensation: Fixed salary + % per closed deal
Work format: Remote

Responsibilities:

• Working with the automated lead generation system Convertix.io
• Monitoring and fine-tuning lead generation criteria (niche, budget, keywords, filters)
• Leading sales conversations with clients (chat-first)
• Qualifying leads and identifying real buying intent
• Negotiating pricing, scope, and timelines

Requirements:

• Strong hands-on experience with Upwork sales (not theory)
• Clear understanding of the sales funnel: proposal → reply → negotiation → deal
• Confident written English (B2+ / C1 preferred)
• Strong negotiation and closing skills
• Ability to push deals forward and drive clients to a decision

How to apply:

In your application, please include:

1. ICP and tech stack you were working with

2. Your Upwork sales experience

3. Your average reply rate / close rate

An international product-driven company operating in the performance marketing and B2B partnerships space. The core focus is on traffic acquisition and monetization through CPA-based models, working closely with providers and scaling across multiple international markets. The company develops its own products, builds long-term partnerships, and prioritizes revenue growth and profitability.

Responsibilities:
- Conducting and controlling daily financial transactions: payments to suppliers, partners, freelancers, and employees;

- Managing payment systems, banks, e-wallets, and corporate cards;

- Consolidation and control of expenses by projects and departments;

- Monitoring compliance with limits and budgets;

- Preparing weekly and monthly reports on expenses, income, profit, and liabilities;

- Working with internal spreadsheets and BI systems to automate reporting;

- Maintaining registers of contracts, payments, statements, and invoices;

- Reconciling data with accounting, the bank, and partners;

- Monitoring budget execution and forecasting cash gaps;

- Participating in budget planning and fund allocation;

- Optimizing payment processes and searching for more favorable conditions;

- Analyzing the financial efficiency of campaigns and projects.

Requirements:
- At least 2 years of experience with financial operations, accounting, or payments;

- Understanding of the fundamentals of financial management, budgeting, and reporting;

- Advanced knowledge of Excel / Google Sheets and experience working with CRM / ERP / BI systems;

- Attention to detail, strong organizational skills, and responsibility;

- Ability to work in a multitasking environment and meet deadlines;

- Will be a plus: Experience in IT, Digital, Affiliate Marketing, or traffic arbitrage;

- Will be a plus: Knowledge of tax legislation in Ukraine / the EU / Poland.

An international product-driven company operating in the performance marketing and B2B partnerships space. The core focus is on traffic acquisition and monetization through CPA-based models, working closely with providers and scaling across multiple international markets. The company develops its own products, builds long-term partnerships, and prioritizes revenue growth and profitability.

Responsibilities:

- Communication and collaboration with account providers (Facebook, Google);

- Acquisition of necessary resources at the request of media buyers;

- Maintaining financial records and reporting;

- Recording all purchases and expenses;

- Interaction with the financial manager for report reconciliation;

- Participation in building and improving the financial accounting system;

- Completing daily and monthly reports;

- Supporting the buying team and assisting in resolving operational issues;

- Participating in process optimization — searching for ways to speed up and simplify tasks;

- Adjusting processes and spreadsheets when errors occur or data is missing.

Requirements:
- System thinking — ability to maintain order in numbers and documents;

- Attention to detail — ability to spot errors and discrepancies before they become a problem;

- Reliability and confidentiality — working with sensitive data;

- Experience in traffic arbitrage, affiliate marketing, or financial management;

- Confident use of Google Sheets / Excel, ability to structure and visualize data;

- Understanding of basic arbitrage metrics (spend, profit, ROI, hold, payout);

- Accuracy, punctuality, and ability to work under deadlines;

- Responsibility and readiness to keep the financial system in perfect order;

- Experience with cryptocurrency transactions and multi-currency systems.

At Mindojo, we’re developing advanced ed-tech platforms, used by market-leading test-prep courses such as Bloom Prep as well as language learning apps for children. 

On our platform, students engage in a rich, personalized dialogue with our AI private tutor, far surpassing the efficacy of existing resources like textbooks, video or classroom lectures, and various e-learning products. 

As a Senior AI-First Full-Stack Engineer, you’ll design lean development pipelines where AI agents assist in building, testing, and releasing product features. You’ll act as both architect and quality gatekeeper—owning solutions from idea to deployment, ensuring every learner-facing feature meets Mindojo’s high bar for reliability and impact.

Note: This role is not about developing new AI models—it’s about leveraging existing AI tools (LLM frameworks, agent orchestration, AI-augmented coding workflows) to engineer better products, faster.

Our culture

We move fast, prioritising the highest-impact work and discarding anything that does not advance learner outcomes. We operate with wide autonomy and a can-do attitude: if you spot a problem, you fix it. Transparency in plans and results, coupled with personal responsibility for quality and security, underpins every decision.

Requirements:

• Demonstrable track record of applying LLM-based tools (e.g., Cursor, Copilot, Windsurf, LangGraph, AutoGen, CrewAI or equivalent) in real-world development workflows.
• Deep software architecture and development experience across the full stack, with expert knowledge in Python, JavaScript.
• Ability to audit AI-produced code for hidden dependencies, insecure patterns and concurrency edge cases.
• Cloud infrastructure management experience along with server administration skills.
• Comfortable leading features through discovery, implementation, testing, deployment and monitoring.
• Proven ability to multitask and manage multiple priorities effectively.
• Exceptional autodidacticism.
• Excellent organizational skills and a proactive attitude are essential.
• Excellent communication skills in both written and spoken English.

Bonus points for:

• Start-up experience.
• Portfolio demonstration – a brief README, blog post or video walkthrough showing an AI-agent workflow you built and the impact it delivered.

Operations expectations:

• Availability – be responsive in Slack during core hours (UTC+3 overlap)—we value fast unblockers, not constant pings, and respect deep-focus time.
• Planning transparency – publish a daily plan in the calendar and an end-of-day progress update.
• Delivery rhythm – break work into tasks that close or deploy at least weekly.
• Incident participation – collaborate in real-time when production issues affect learners.

What you will be doing:

• Architect and maintain agent pipelines (planning → coding → test/validation).
• Review AI-generated pull requests for security, performance and edge-case correctness; no tolerance for bad code or slow, error-prone deployments.
• Automate repetitive engineering and operational tasks as soon as they are recognised.
• Own solutions end-to-end—from design through deployment to monitoring—without hand-holding or bottlenecks.
• Run focused experiments to validate product ideas and workflow improvements.
• Thrive in a fast-paced environment, adapting quickly to new challenges across various tasks.

What you won’t deal with:

• Endless ticket grooming, rigid specs, or waterfall hand-offs.
• Bureaucratic status meetings or drawn-out manual deployments.

What we offer:

• Competitive compensation package.
• Stock option plan.
• Challenging and interesting projects.
• Flexible work schedule and the ability to work from anywhere.
• A real chance to play a key part in revolutionizing education worldwide.

We are looking for an experienced Senior C++ / Python Software Development Engineer with a strong background in networking systems and Cisco protocols. This role combines low-level software development, network device engineering, and Python-based automation/testing. You will work close to hardware, data/control planes, and real networking traffic. Candidates with experience spanning both development and QA engineering are highly encouraged to apply.

Details

Location: Europe / Ukraine / Ukrainians currently outside Ukraine

Employment Type: Full-time

Work Format: 100% Remote

Start Date: ASAP

Experience Level: Senior (5+ years)

Language: English – Fluent

Networking / Cisco - MUST

Key Responsibilities

Develop and maintain firmware and software for networking devices (routers, switches) using C / C++

Build Python-based automation and data-path test frameworks for networking devices

Design and implement data-plane and control-plane related functionality

Develop automated tests for networking devices using Python and Pytest

Participate in SW/HW bring-up, integration, and debugging

Work closely with network engineers to validate routing, forwarding, and traffic behavior

Analyze and troubleshoot low-level networking and performance issues

Contribute to test strategy, tooling, and CI/CD improvements

Operate with senior-level ownership, autonomy, and technical decision-making

Requirements

Networking Experience (Mandatory)

Commercial experience with networking devices (routers, switches)

Firmware / software development for networking devices using C / C++

Strong Python development experience

Experience with BSP, data plane, or control plane protocols

Development of data-path automated tests using Python / Pytest

Experience with SW/HW bring-up and integration

Solid understanding of:

Routing vs forwarding

Switches vs routers

VLANs

TCP/IP and UDP

Advanced Networking Knowledge

Link aggregation and LACP

Load-balancing algorithms, including ECMP

SPAN / RSPAN / ERSPAN

ACLs and traffic filtering

Traffic mirroring concepts

Dynamic routing protocols:

BGP

OSPF

RIP

IS-IS

Programming & Tools

Advanced C / C++

Advanced Python

Hands-on experience with:

Pytest

Scapy

Traffic generators and traffic analyzers

Version control: Git / GitHub

Nice to Have

Embedded systems background

Linux internals and low-level debugging

Experience with CI/CD pipelines

Familiarity with Jira

Key Notes

Cisco networking protocol experience is mandatory

Strong commercial background in network engineering + software development

Senior-level independence and problem-solving are expected

Rates are flexible and discussed individually

Location: Remote, EST Time Zone (7:00 AM – 4:00 PM EST)
Engagement format: Part-time / Project-based (by agreement)

About Us

We are a global innovation company with over 20 years of successful history.
We build our own AI-driven technology products that transform markets and receive international recognition.

What people say about us:
Featured in Forbes, The Wall Street Journal, Fox Business, and leading global publications
Winners of international innovation and technology competitions
Trusted by global brands such as Apple, Uber, L’Oréal, Johnson & Johnson, and others

Our Team

We attract professionals from Microsoft, Google, McKinsey, PwC — people who strive to build meaningful things.
Every employee here is a valued contributor, not a “resource”.
We care about team morale and create an environment where everyone feels at home.

This is not a classic Business Coach or HR role.

What You’ll Do
• Work directly with founders and key leaders as a Business Coach
• Support leaders in decision-making, clarity, and prioritization
• Help structure goals, responsibilities, and leadership processes
• Identify blockers, blind spots, and patterns impacting execution
• Improve communication and leadership effectiveness
• Provide regular 1:1 coaching sessions
• Support execution, accountability, and performance
• Act as a practical business partner, not a motivational speaker
• Use structured thinking and real business context

Who We’re Looking For

You:
• Are comfortable working in dynamic, evolving environments
• Bring clarity and structure without slowing execution
• Take responsibility for outcomes, not just conversations
• Can challenge constructively and support growth
• Communicate clearly with senior stakeholders
• Work independently without constant supervision
• Focus on results, not theory
• Adapt quickly to new contexts

Requirements
• 5+ years of experience in business coaching, leadership coaching, or executive advisory roles
• Proven experience working with founders, CEOs, executives, or senior managers
• Hands-on experience supporting decision-making, prioritization, and execution in real business contexts
• Background in tech companies, startups, scale-ups, or fast-growing organizations
• Experience working with leadership challenges during growth, change, or scaling phases
• Ability to translate complex leadership or business challenges into clear actions and accountability
• Strong understanding of business operations, team dynamics, and performance drivers
• High emotional intelligence combined with structured, pragmatic thinking
• Experience working remotely with international teams
• English: C1 (advanced, confident communication)

What We Offer
• Remote work in an international team
• Full-time engagement
• OR flexible engagement: part-time or per-project (based on scope and objectives)
• Fixed working hours: 7:00 AM – 4:00 PM EST
• Opportunity to work with AI-driven technology products
• Work with a time tracker

We are looking for a Full Stack Developer (Middle / Middle+) to join our team on a part-time or full-time basis.

This role is for a true full-stack engineer, not just a frontend developer who connects to an API. The ideal candidate is backend-strong, confident on the frontend, and able to design and build systems from scratch with future scalability in mind.

Backend Requirements (primary focus)

We consider the following backend stacks:

Option A

• Node.js
• GraphQL and REST APIs
• PostgreSQL - strong knowledge beyond ORM level (queries, indexing, performance, data modeling)
• Supabase experience is a big plus

Option B

• Python

• Django and/or FastAPI

   

Frontend Requirements

• React
• Next.js
• Tailwind CSS

• TanStack Query (React Query)

   

What we are looking for

• Strong knowledge of both backend and frontend development
• Backend-first mindset, with the ability to work confidently on the frontend
• Solid architectural thinking
• Ability to design and build systems from scratch
• Experience in laying a strong foundation and planning for future extensibility
• Understanding of clean architecture, scalability, and maintainability

Level

• Middle to Middle+ Full Stack Developer

• Not a pure frontend role

   

Language

• Conversational English is required (spoken and written)

   

If you enjoy building well-architected systems, thinking beyond just implementation, and owning features end-to-end, we’d be happy to talk.

Ubidex is seeking a highly skilled Software Engineer to join our team and contribute to the development of a large-scale SaaS platform. In this role, you will be responsible for designing and implementing architectural solutions to ensure high performance and efficiency in our platform for retargeting advertising campaigns and analytics.

Required Skills and Experience:

• 7+ years of experience in backend development in total;
• 5+ years of experience with Go development; capable of building and maintaining high-load backend systems;
• Experience with Linux (Debian / Ubuntu);
• Solid understanding of Docker and container orchestration systems (k8s, swarm);
• Experience with PostgreSQL;
• Experience with In-memory storage (Redis, Aerospike);
• Experience with distributed systems and high-load services;
• Experience with Microservices (API, patterns, background processing);
• Experience in developing REST, GraphQL, gRPC API;
• Solid understanding of KISS, DRY, SOLID principles and design patterns;
• Practical experience with event-driven development patterns;
• Experience with Ansible and CI/CD tools like Gitlab CI;
• Experience with monitoring and logging tools and performance tunning;
• Fast learner with a strong desire to continually acquire new knowledge;

Nice to have:

• Experience with ClickHouse;
• Experience with designing GraphQL and gRPC API;
• Experience with message brokers like RabbitMQ, Apache Kafka, NATs;
• Experience with scripting languages like Python, Bash;
• Experience with Node.js development;

Responsibilities:

• Build high-load (500k+ RPS) distributed system using Golang and Node.js;
• Design and implement backend features from conception through to deployment;
• Analyze system performance metrics and bottlenecks to fine-tune services for maximum efficiency;
• Work closely with team to deliver high-quality features and resolve issues;
• Review code and provide feedback to ensure best practices (e.g., style guidelines, accuracy, testability, and efficiency);
• Define and implement testing strategies, including unit testing, integration testing, and performance testing, to ensure the reliability of the system;
• Stay updated on the latest technologies and tools relevant to the project, and big data processing, making informed decisions on technology adoption
• Be a part of the critical path in a fast-growing project's development and delivery processes.

Product stack:

• On-premise: Docker, Swarm, k8s
• Programming languages: Golang, JavaScript / Node.js
• DB: PostgreSQL, Redis, ClickHouse, Aerospike, Mongo
• Monitoring: Prometheus, Loki, Grafana
• CI/CD: GitLab, Ansible
• Storage: S3(minio)
• Web: nginx, traefik, cloudflare