Jobs at Djinni

We are looking for a B2B Marketing Manager who will drive consistent brand presence across digital and offline channels. Backed by a strong B2C legacy and technically advanced products (platform modules, payments, CRM, risk management, etc.), your mission is to enhance brand awareness, support business development, and strengthen lead generation through coordinated marketing, event, and media initiatives.

You will own and execute the B2B marketing strategy — covering online and offline brand activities, paid advertising (Google Ads, LinkedIn Ads), and email marketing (newsletters, automations, single sends).

Key Responsibilities

• Event Marketing: Plan and execute offline brand activities at industry events with internal teams and contractors. Oversee stand creation, staffing, media support, and distribution of merchandise and printed materials.
• Creative Production: Collaborate with content and design teams to produce banners, videos, and other visual materials as needed.
• Campaign Management: Launch, optimize, and analyze B2B campaigns (always-on and on-demand).
• Email Marketing: Set up automations, newsletters, and one-off campaigns. Create and maintain email templates and communication flows.
• Paid Advertising & Media Buying:: Manage, optimize, and analyze paid campaigns across Google Ads, LinkedIn Ads, and display/video networks.
• Website Management: Develop and optimize landing pages, forms, pop-ups, and banners to improve conversion and lead acquisition.
• Content Support: Provide briefs and technical assignments for the creation of sales and marketing content (blog posts, case studies, product pages).
• Reporting: Collect, aggregate, and analyze marketing data. Track KPIs and prepare performance reports.

Requirements

• 3+ years of experience in B2B marketing, preferably in iGaming, SaaS, or Fintech.
• Strong understanding of Inbound vs. Outbound marketing and the B2B sales funnel.
• Proven ability to launch, optimize, and analyze marketing campaigns from scratch.
• Hands-on experience with Google Ads, LinkedIn Ads, X Ads, and Meta Ads.
• Experience operating ESPs such as SendGrid, Mailchimp, Lemlist, etc.
• Analytical mindset with experience in Google Analytics 4, Google Tag Manager,  Power BI, Tableau, Looker Studio, or similar.
• Ability to brief and manage content creation for decks, one-pagers, brochures, case studies, and gated content.
• Experience managing website and landing page production, including collaboration with design and dev teams.
• Hands-on experience with WordPress CMS.
• Ability to work in cross-functional teams and multiple stakeholders.
• English level: Upper-Intermediate or higher.

Nice to Have

• Experience in event marketing, including exhibitions, stand management, and on-site operations.
• Familiarity with iGaming industry trends and major events.
• Experience producing webinars, podcasts, or interviews.
• Media buying experience and understanding of display advertising on external platforms.
• CRM management experience.

The product company is looking for a Lead C++ Developer to work remotely. 

The company provides ultra-low latency financial backbone systems to tier-1 banks in the EU and the US. The company is certified by more than 100 Forex trading platforms, accounting for over 95% of currency liquidity, providing a comprehensive solution using a single API for both Maker and Taker. These systems allow the bank to serve a multitude of algorithmic traders, providing market access and trading, risk management, price matching, liquidity aggregation, etc.
The company has created a product that allows international companies and banks to conduct instant transactions on global currency exchanges with minimal time delay, using its own low-latency gateway. This solution is an advantage for them to be ahead of competitors by fractions of a millisecond.

Two rounds of interviews are planned, including with the company's CEO.
The team consists of 17 C++ developers.
 

Required: experience in leading a team, experience in server-side development in C++ (Linux), multithreading.
It will be a plus: with High-load systems and on FinTech projects.

Description:

Our Client is a Fortune 500 company and is one of the biggest global manufacturing companies operating in the fields of industrial systems, worker safety, health care, and consumer goods. The company is dedicated to creating the technology and products that advance every business, improve every home, and enhance every life.

Minimum Requirements:

• Minimum of 4 years of experience in SQL and Python programming languages, specifically for data engineering tasks.
• Proficiency in working with cloud technologies such as Azure or AWS.
• Experience with Spark and Databricks or similar big data processing and analytics platforms
• Experience working with large data environments, including data processing, data integration, and data warehousing.
• Experience with data quality assessment and improvement techniques, including data profiling, data cleansing, and data validation.
• Familiarity with data lakes and their associated technologies, such as Azure Data Lake Storage, AWS S3, or Delta Lake, for scalable and cost-effective data storage and management.
• Experience with NoSQL databases, such as MongoDB or Cosmos, for handling unstructured and semi-structured data.
• Fluent English

Additional Skillset (Nice to Have):

• Familiarity with Agile and Scrum methodologies, including working with Azure DevOps and Jira for project management.
• Knowledge of DevOps methodologies and practices, including continuous integration and continuous deployment (CI/CD).
• Experience with Azure Data Factory or similar data integration tools for orchestrating and automating data pipelines.
• Ability to build and maintain APIs for data integration and consumption.
• Experience with data backends for software platforms, including database design, optimization, and performance tuning.

Job responsibilities:

• Responsible for the building, deployment, and maintenance of mission-critical analytics solutions that process data quickly at big-data scales
• Responsible for the design and implementation of data integration pipelines
• Contributes design, code, configurations, and documentation for components that manage data ingestion, real-time streaming, batch processing, data extraction, transformation, and loading across multiple data storages
• Take part in the full cycle of feature development (requirements analysis, decomposition, design, etc)
• Contribute to the overall quality of development services through brainstorming, unit testing, and proactive offering of different improvements and innovations.

Go Developer (Streaming / WebRTC)

Remote | Project-based | Part-time / Contract
 

OnePlusOne Solutions is looking for an experienced Go (Golang) Developer to help rewrite the backend of a streaming service for a fantasy-related project.

We have an application that allows users to combine and stream audio file sets via:

• Web interface
• Discord bot

The current streaming implementation creates excessive server load, which negatively impacts stability and performance as the number of users grows.
 

Our goal is to fully rebuild the streaming backend with a strong focus on performance, scalability, and stability under high load.

Responsibilities

• Rewrite the streaming backend service using Go
• Use GoAV or similar streaming/media processing solutions
• Optimize CPU and memory usage
• Ensure stable performance under high concurrency
• Improve backend architecture for scalability
• Collaborate with the team to integrate the new service into the existing system

Requirements

• Commercial experience with Go (Golang)
• Experience working with audio/video streaming systems
• Solid understanding of WebRTC principles
• Experience optimizing backend performance
• Experience working with high-load systems
• English level B1+ (for working communication)

Nice to Have

• Experience with Discord API
• Experience with real-time communication systems
• Docker / containerization experience
• Profiling and performance tuning experience
   

Work Format

• Remote
• Project-based (with potential for further collaboration)

We are looking for a skilled Senior/Team Lead Full Stack (Node.js/React) developer with 5+ years of professional experience to join our project for working on enterprise-level project from the Canada

Please note that this role requires a hybrid work format (2–3 days in the office in Toronto, the rest remote)

Requirements

Must have

• 5+ years of experience in full-stack development
• Proficiency with JavaScript and TypeScript
• Experience building web applications and APIs (Node.js + React)
• Experience with cloud platforms (preferably AWS, but others are acceptable)
• Strong problem-solving and research skills
• Ability to communicate complex technical topics clearly to both technical and non-technical stakeholders
• Strong desire to provide technical leadership and overall direction for the delivery team

About Project

Product

Our customer is one of the world’s most successful hotel companies. Hotel has 118 properties in 47 countries. For the second consecutive year, the hotel was named the Best Luxury Hotel Chain in the world by Business Traveller magazine.

Stage

Ongoing product ecosystem with continuous scaling and active development. Modern tech stack, no legacy.

Project team

Our technical team will consist of 6 people: a Project Manager, a Senior Node.js Developer, a Middle React Developer, a Junior Node.js Developer, and a Senior QA Automation Engineer. We also collaborate with a large Salesforce team on our side (up to 40 people)

Work Schedule

Full-time workweek (Monday to Friday), hybrid format (2–3 days in the office, the rest remote)

Interview Stages

• Сall with Recruiter (30 minutes)
• Interview with our Senior Full Stack developer
• Technical Assessment with the Client
• Cultural Fit Interview with the Client

Our Customer:

Our client is a fast-growing tech company that builds innovative web solutions. They are looking for a talented Front-end Developer to design and deliver impactful features, contribute to new services, and help advance their platform. The team values collaboration, learning, and continuous innovation.

Your tasks:

• Develop and maintain Angular-based web applications.
• Implement testing best practices to ensure high-quality code.
• Identify performance bottlenecks and optimize front-end functionality.
• Collaborate closely with backend services and APIs.
• Mentor junior developers and help grow the frontend team.
• Work alongside product managers and senior leadership to deliver features.
• Ensure high availability and reliability of the product, including participating in on-call rotations.
• Continuously learn, experiment, and share knowledge with the team.

Required Experience and Skills:

• 5+ years of experience in front-end development.
• Strong expertise in Angular and front-end architecture for large-scale applications.
• Solid understanding of web technologies and browser behavior.
• Experience building scalable, highly responsive, and reliable web apps.
• Passion for UI/UX and attention to detail.
• Ability to thrive in a fast-paced, collaborative environment.
• Excellent communication skills and ability to translate requirements into solutions.
• English level Upper-Intermediate or higher.
• BSc in Computer Science or equivalent practical experience.

Would be a plus:

• Hands-on experience with Angular CLI, testing frameworks (Jasmine, Karma), and Webpack

Working conditions

• 5-day working week, 8-hour working day;
• Remote work.

At WhiteTech, we empower businesses in the financial ecosystem with cutting-edge white-label and SAAS solutions.

Our comprehensive suite of tools is tailored for EMI, PSP, e-commerce, and open banking platforms. With WhiteTech, clients gain access to a platform designed for flexibility, scalability, and seamless integration.

Our mission is to help businesses unlock their full potential in a rapidly evolving financial landscape.

We are excited to invite a Senior Talent Acquisition Manager to join our progressive Recruitment team. We seek a driven professional who is passionate about identifying top talent and has a proven ability to excel in a dynamic, results-oriented environment. In this role, you will lead the identification, connecting with, and recruiting of top-tier IT professionals who will drive the company’s growth and achieve its strategic goals.

Key responsibilities:

• Be responsible for the Entire Recruitment Lifecycle, from job posting and candidate sourcing to offer negotiation;
• Develop and implement effective recruitment strategies to attract IT talent;
• Source candidates and evaluate applicant qualifications;
• Conduct initial screenings and interviews to assess candidate qualifications and fit and check references;
• Maintain and uphold Talent Acquisition process workflow and compliance;
• Be data-driven and use recruitment reporting and analytics to influence decisions;
• Collaborate with hiring managers to understand their needs to identify the right talent;
• Ability to monitor and analyze vacancies, pipeline, diversity, and quality of hire;
• Deliver a seamless candidate experience by maintaining clear and consistent communication throughout the recruitment process;
• Proficiency in using applicant tracking systems (ATS) and other recruitment tools to streamline processes and maintain accurate candidate records is required;
• Actively promote the company’s culture, values, and unique selling points to attract top talent and enhance the employer brand within the tech community;
• Ensure a smooth transition for new hires by coordinating with HR and hiring managers to facilitate onboarding processes.

Requirements & Skills:

• 💼 3+ years of experience in full-cycle recruiting for technical and non-technical roles, in the financial sector.
• 🔍 Strong understanding of the recruitment process (candidate sourcing, screening and initial interviews, offer negotiation, and reference checking)
• 💻 Strong understanding of IT roles, technologies, and market trends
• 🛠 Proficiency in using recruitment software and applicant tracking systems (ATS)
• 🎯 Exceptional assessment and interviewing skills and a strong command of assessment and selection methodologies, instruments, and processes
• 🕵️‍♂️ Experienced in sourcing passive talent
• ⏱ Excellent time management, follow-through, and organizational skills
• 🤝 Demonstrated experience working in a fast-paced, highly team-oriented environment
• 🔄 Ability to handle multiple priorities with a high degree of accuracy and ability to delegate work as needed
• 🧠 Strategic thinking and problem-solving skills
• 📝 Attention to detail and ability to maintain accuracy in candidate records
• 🌟 High level of responsibility, result-focus, and attentiveness
• 🚀 Proactive approach and curiosity
• ✅ At least an Upper Intermediate level of English

Our recruitment process typically follows these stages:

1. Application screening
2. Interview Stages (2 weeks):
   • Prescreening call 
   • Test Task
   • Final Interview with Talent Manager
3. Job Offer
4. Referrals: Employment and Background Check

The project develops disruptive robotic solutions for warehouse automation and supply chain transformation, drives results and focuses on customer satisfaction. Our modular and scalable solutions utilize existing space and high-speed robotics combined with proprietary software and technology. Since forming in 2007, it has grown to over 700 employees in North America and supports an impressive, high-profile customer base. We seek candidates who are passionate about our solution and approach problem solving with a creative mind and a commitment to excellence. If you seek a challenge and want to impact the way the world distributes product from manufacturers to store shelves, we invite you to join our team.

Requirements:

• Experience with PLC programming e.g. Rockwell, Siemens, Schneider etc.

• Experience with the IEC 61131-3 programming languages, especially ladder logic, sequential function chart and structured text.

• Demonstrated problem solving and troubleshooting skills, ideally in a service / support engineering context.

• Upper-intermediate English level

Desired

• Experience with user interfaces e.g. FactoryTalk View, WinCC.

• Experience with industrial robot programming e.g. ABB, Fanuc.

Responsibilities:

1. Provide remote technical support to site operators during downtime events, assisting them in returning the equipment to an operational state.

2. Investigate in-service technical problems, assembling information and performing root cause analysis.

3. Develop and validate solutions to issues discovered with existing equipment in-service, which can include PLC logic, industrial robot logic and user interfaces.

4. Develop troubleshooting guides and train equipment operators in their use.

5. Develop and maintain a database of troubleshooting guides.

6. Work schedule is shift based

Headway Inc is a global tech company, revolutionizing lifelong learning by creating digital products for over 150 million users worldwide. Our mission is to help people grow. We’re proud to be ranked 4th among the World’s Top EdTech Сompanies by TIME magazine. We believe lifelong learning should be accessible, personalized, and impactful to each individual. That’s how we change the world and why we bring together exceptional minds.

The core of our achievements is our team. We believe in people and shared values SELECT. That’s why, together with Pavlo Orlenko, Head of Product Marketing at Headway by Headway Inc, we’re looking for a Product Marketing Manager to drive CR, LTV, ROI, and new revenue growth by owning a web-based thematic direction end to end.

The product and team you will be working with:

Headway is our flagship app, offering summaries of nonfiction bestsellers, daily insights, and gamified challenges. Headway is the world’s most downloaded book summary app and has been featured as App of the Day in over 30 countries, including the US, the UK, and Canada.

You’ll join a cross-functional Product Marketing team at the intersection of marketing, product, and analytics, focused on sustainable growth through a structured A/B testing approach. Within this setup, we’re actively developing web-based thematic directions — and you’ll own one of them end to end.

The challenge you’ll take on:

As part of a tight creative trio — User Acquisition, Creative Marketing, and Product Marketing — your challenge is to unlock and scale a thematic direction end to end. From ad messaging and web funnel experience to conversion and monetization, you’ll own a coherent user narrative, understand cause-and-effect across the funnel, and apply best market practices to drive CR, LTV, ROI, and sustainable new revenue growth within a large thematic unit.

This job is perfect for you if you:

• Want real ownership and focus — owning one web-based thematic direction end to end and directly impacting business growth.
• Enjoy working in a fast, execution-driven environment, where ideas quickly turn into experiments and measurable results.
• Want to work in a cross-functional setup, closely collaborating with User Acquisition and Creative Marketing Specialists.
• Value strong team support, working with a product designer, frontend engineer, analyst, and market intelligence specialists dedicated to growth and data.
• Think in experiments and systems, using structured A/B testing to understand cause-and-effect and scale what works.

• Want to grow within a product ecosystem, where collaboration with experienced PMs and marketers accelerates learning and impact.

   

What will you do:

• Own one theme: understand user needs, pains, and motivations, and shape a clear value proposition for each segment.
• Design and optimize the full user journey together with User Acquisition and Creative: creatives, web funnels, quizzes, landings, paywalls, and upsells.
• Run reverse funnel engineering: identify gaps between the promise in ads and the actual product experience, and close them through A/B testing and new solutions.
• Build a shared hypothesis backlog with the team, prioritize it, launch experiments, and analyze results together with analytics.

• Work with key metrics: CR across all funnel steps, ARPU, LTV/CAC, as well as overall marketing spend and new revenue volume.

   

What do you need to join us:

• 2–3+ years of experience in Product Marketing, Growth, User Acquisition, or Creative Marketing — with hands-on experience working with web.
• Confidence in execution under uncertainty: no fear of acting without full clarity, combined with the ability to build confidence through data, prioritization, and hypothesis validation.
• Experience in day-to-day collaboration within a “creative trio” (Product Marketing, User Acquisition, Creative Marketing) is a strong plus.
• Hands-on experience working closely with UX specialists, analysts, and engineers on a daily basis.
• Strong understanding of how analytics, marketing, and product come together to drive growth and business results.

• Alignment with the values of our team (SELECT).

   

What do we offer:

• Work within an ambitious team on a socially impactful education product.
• An office with a reliable shelter, generators, satellite internet, and other amenities.
• Access to our corporate knowledge base and professional communities.
• Personal development plan.
• Compensation for English language learning, external training, and courses.
• Medical insurance and full sick leave compensation.
• Company doctor and massage in the office.
• Sports activities: running, yoga, boxing, and more.
• Corporate holidays: we go on a week-paid holiday to rest and recharge twice a year.

• Supporting initiatives that help Ukraine. Find out more about our projects here.

   

Working schedule

This is a full-time position with a hybrid remote option. It means that you can decide for yourself: whether you want to work from the office, remotely, or combine these options.

Are you interested?

Send your CV!

Role description
The OVO Group’s mission is to drive progress towards net zero carbon living. We’re a collection of companies with a single vision: to power human progress with clean affordable energy for everyone. At OVO, we are on a mission to solve one of humanity's biggest challenges, the climate crisis. And we know it takes all of us to change the world. That's why we need diverse people from all gender identities, ethnicities, ages, sexual orientations, life experiences and backgrounds to join us.

Being an Engineer here at OVO means being at the forefront of building innovative solutions that drive the sustainable energy revolution. As a part of our talented team, you'll collaborate on cutting-edge initiatives, tackle complex challenges, and make a meaningful impact in creating a greener future. Join us and unleash your expertise to transform the energy industry and pave the way for a sustainable tomorrow.

Responsibilities
Development of new features and improvements
Adopting and contributing to CI/CD pipeline and ways of working
Delivering product value iteratively
Ensuring best practices around observability and security
Working closely with other developers to ensure knowledge sharing
Designing and developing new platform functionality, from inception to deployment
Building on top of and integrating the existing estate
Helping to refine and deliver work items across our Agile delivery process
Contributing to efficiencies and improvements in Ways of Working
Designing, building, and maintaining efficient, reusable, and reliable code.
Sharing new ideas, techniques and methodologies.

Requirements
5+ years of software development experience.

Strong .NET skills and experience building web solutions.

Experience with React, 

Experience with clouds (AWS is preferred), Kubernetes, and Docker.

Understanding of ArgoCD or GitOps is a plus.

Understanding of BDD is also a plus.
Microservices /Serverless
Infrastructure as code
Event-driven architectures, RESTful interfaces and SQL databases
Experience using TDD principles would be an advantage
Experience in Data modelling/Database engineering would be a plus
Upper-intermediate English
Experience working in an Agile development process
Critical thinking and problem-solving skills

LITSLINK is looking for a motivated Sales Trainee / Junior Sales Manager who wants to start a career in IT services sales and learn how to acquire clients via different outbound channels and platforms. This role is ideal for candidates with strong communication skills, interest in IT, and a results-driven mindset. You will go through structured onboarding and hands-on training with real projects and mentorship from experienced sales managers.

Requirements

• Strong interest in IT services and software development
• English level: Intermediate+ (written & spoken)
• Good written communication skills
• Willingness to learn sales processes and work with KPIs
• Proactive, responsible, and result-oriented mindset
• Basic understanding of B2B communication or client interaction
• Readiness to work with cold outreach on platforms (e.g. Upwork, LinkedIn or similar)

Nice to have

• Any experience with freelance platforms (Upwork or similar)
• Previous experience in sales, lead generation, customer support, or recruitment
• Basic understanding of web/mobile development and tech stacks
• Familiarity with SDLC
• Experience with CRM tools (HubSpot, Pipedrive, etc.)

Responsibilities

• Learn how to sell IT services (software development, dedicated teams, UX/UI) via outbound channels and platforms
• Search for relevant projects and assist with proposal writing
• Communicate with leads and support pre-sales activities
• Qualify incoming requests and help clarify client requirements
• Support estimation and deal-closing process together with mentors
• Maintain CRM and sales reports
• Follow internal sales processes, templates, and guidelines
• Gradually start bringing first clients to the company

We offer

• Structured onboarding and mentorship with growth to Middle Sales Manager
• Commission-based income model with strong earning upside for top performers
• Flexible, remote-first work format
• High level of flexibility (non-exclusive cooperation model, subject to KPIs)
• Opportunities for international collaboration and future business trips
• Legal and organizational support for international cooperation
• Professional growth in IT outsourcing / outstaffing environment
• Supportive sales and delivery teams

Hiring process

• Screening call with a recruiter
• Interview with Head of Sales / Business Development
• Training program onboarding and cooperation offer

Important:
● Ability to search clients on Upwork, Linkedin, Facebook;
● Skill of finding the right words during negotiations;
● Desire to grow in IT field and achive new goals.

Requirements:
● Experience in lead generation or sales for at least 1 year;
● Proactivity and focus on achieving results and KPIs;
● Desire to develop and grow as a professional;
● Excellent communication and negotiation skills;
● High level of organizational skills and the ability to work in a fast-paced environment.

Responsibilities:
● Active search and attraction of new customers in the B2B segment;
● Building chains of contacts: creating scripts and message templates, sending them and responding to the first contacts with leads via LinkedIn, Facebook, E-mail and other channels;
● Conducting negotiations with potential customers and organizing meetings for Sales managers;
● Entering and updating data in the CRM system for efficient customer and contact record keeping;
● Enriching the base of potential customers using tools such as Snov.io, Sales Navigator and others.

Working conditions:
● The number of messages/letters sent;
● Number of scheduled meetings/calls with Sales managers.

Working conditions:
● Competitive salary;
● Transparent model of professional and career growth;
● 5/2 working week with a flexible schedule;
● Ability to work in the office or remotely;
 

Now our team has a position for Junior Lead Generation Manager.

You’re good with:
• at least Intermediate English, speaking and writing skills;
• client-oriented approach;
• understanding of IT sphere (Software Development process, modern technologies...);
• basic knowledge of sales techniques (B2B market).

It will be a plus:
• previous lead generation experience;
• previous experience as sales manager.
• previous experience as customer support.

Your responsibilities will be:
• Search for new customers;
• Identify prospective clients needs and communicate with the customer via email and Linkedin;
• Manage a part of sales cycle;
• Prepare proposals for the potential customers;
• Work closely with the presales team.

What the company offers:
• Constant and interesting work with foreign clients;
• Flexible working hours;
• Annual paid 10 days vacation and paid 5 sick days.

• Cash bonuses after clients onboarding

About the project:

We are finalizing a Telehealth platform designed to bridge the gap between doctors and patients. Our goal is to provide a seamless, secure, and accessible medical experience. We are currently in the critical phase of preparing our web and mobile applications (iOS & Android) for the official live release.

We are looking for a skilled Full stack web developer with strong Kotlin expertise to help us polish the functionality, ensure stability, and successfully launch the product.

A new team member will be in charge of:

• Finalize and prepare the platform for a stable and secure production launch.
• Develop and maintain backend services using Kotlin and Spring Boot.
• Optimize database design, queries, and system performance.
• Translate business requirements into scalable, maintainable technical solutions.
• Ensure code quality and stability through testing and debugging.
• Collaborate with mobile, QA, and product teams to support release readiness.
• Support deployment and performance optimization in Azure (if applicable).
• Contribute to frontend improvements using JavaScript / daisyUI when needed.
•  

Does this relate to you?

• 3 years of experience with Kotlin, including coroutines, null safety, and idiomatic syntax.
• 2 years of experience building scalable backends with Spring Boot, including Security and Data JPA.
• 2 years of experience with JavaScript.
• Strong ability to design database schemas and write optimized queries.
• Strong ability to translate complex business requirements into maintainable technical solutions.
• Strong skill in identifying and fixing bottlenecks in memory and database performance.
• Commitment to high code quality through unit and integration testing.
• 3 years of experience with Azure would be a plus.
• Experience using the daisyUI would be a plus.
• English is Uppere-intermediate.

About us
We are building a high-load decentralized platform at the intersection of blockchain and fintech: on-chain data indexing, trading automation, and integrations with DeFi and Web3.

Responsibilities

• Design and develop backend architecture: APIs, queues, indexers, bots/workers for on-chain event processing.
• Develop event-driven architecture with idempotency, exactly-once delivery (transactions + deduplication), outbox/inbox, retries, and DLQ.
• Integrate with Web3/EVM/Solana: read and process events, interact with smart contracts, manage nonces, handle reorg/finality, and multi-chain transactions.
• Work with Subgraph (The Graph): design schemas, implement TypeScript mappings, and optimize blockchain data indexing.
• Develop DeFi integrations: Uniswap v2/v3, AMM pools, pricing, liquidity, routing, slippage/MEV resistance.
• Optimize performance: profile hot paths, migrate critical components to Rust, ensure async/tokio efficiency, manage backpressure.
• Ensure observability and reliability: metrics/traces/logs (Prometheus, Grafana, OpenTelemetry), SLO/SLI tracking, degradation and fallback mechanisms.

• Provide leadership: define technical vision, mentor developers, conduct code reviews, prioritize backlog, and introduce best engineering practices.

   

Requirements

• 5+ years of commercial backend development experience.
• 3+ years in blockchain/DeFi (EVM, Solana, on-chain data, smart contracts, integrations).
• 2+ years in a Tech Lead or Team Lead role.
• Strong Rust experience: async/tokio, network programming, performance profiling.
• Proficiency with queues/events: RabbitMQ/AMQP, delivery guarantees, retries, DLQ, message contracts.
• Experience with Blockchain/DeFi: ABI, events, integration with Solidity and Solana programs, multi-chain interactions.

• Knowledge of Subgraph (The Graph): schema design, mappings, indexing optimization.

   

Nice to have

• Production experience with Rust (tokio, async, tracing), low-level performance profiling.
• Knowledge of Go (CLI/tools), ETL pipelines for on-chain data, DWH (ClickHouse/BigQuery).
• Experience with Layer 2 (Optimism, Arbitrum), cross-chain bridges/protocols.
• Experience with MEV, mempool monitoring, gas optimization.
• Familiarity with Web3 tools: Foundry, Hardhat, Ethers.js, web3.js, Anchor (Solana).