Jobs at Djinni

We`re looking for our team ProfiSea Labs Python Developer  

ProfiSea Labs, an innovative cloud management platform, is capable of handling all the most painful points felt by CloudOps engineers and IT managers who face increasing pressure to cut down IT costs, but only in a way that doesn't do any damage to business value. ProfiSea Labs is a new generation AI-Based multi-cloud management platform that helps users visualize cloud assets, maximize cloud utilization, reduce waste, and lower cloud spending pursuing business goals 

 Requirements:

- Familiarity with Python

- Good English

- Desire to learn something new and useful. 

- BS in computer science.  

Your Responsibilities: 

- Develop solutions according to technical and business requirements 

- Design new functionality 

- Be a part of international team of experts with a warm and friendly atmosphere 

- All we need from you is your desire to do great things!   

What we Offer 

- Great Salary 

- Flexible work hours 

- Career growth 

- Medical insurance 

- Sport compensations 

- Professional working environment, where you’d be an essential member of our company 

We are looking for a translator with a high level of English and Ukrainian, as well as experience working with technical texts.
 

The translator will work in the Technical Documentation Team alongside writers and editors. The team is part of a large In-house Agency within the Marketing Department. Together with the teams of Writing & Editing Team, Localization, Design, and Content Management, Technical Documentation Team creates and adapts content that embodies the product idea and presents it to audiences in more than 180 countries.
 

As a translator, you will work with the following formats:

• User manuals (sample).
• Technical specifications (sample).
• Technical articles (sample).
   

Key requirements:

• High language proficiency: Written English (C1) and Ukrainian (native).
• At least 2 years of professional experience in translating from English to Ukrainian and vice versa.
• Experience in working with technical topics.
• Experience in working with CAT tools and glossaries.
• Experience in working with CrowdIn would be an advantage.
• Self-discipline and high standards for the results of your work.
• Meeting deadlines and ability to follow and adapt to the defined editorial guidelines and tone of voice.
• Ability to quickly adapt and switch between different topics, formats, and tasks.
• Team player: skills of effective communication and readiness to interact with other teams for a better result.
• Experience in editing would be an advantage.
   

We offer:

• An amazing team of professionals and zero bullshit culture.
• Flexible work schedule, full-time office.
• Really diverse projects and fast professional growth.
• Medical insurance.
• English classes for fine-tuning your knowledge.
• Ajax security system kit for beta testing of the latest gadgets before their release.
   

Our cooperation with a translator starts with specialized onboarding, internal product training, and extensive support to ensure quick adaptation and full immersion in the company’s context. We expect a strong desire to learn about the product that you are to translate about.

If your experience and career goals match the job description, please apply. The application process implies the completion of a test task.

Company: UpToWin – a fresh perspective on the iGaming industry, offering you wide opportunities, freedom, and a direct impact on the company’s growth.
 

What we expect from you:

• 1+ year of experience as a Graphic Designer
• Preferably, experience in gambling/betting/gaming industry
• Strong skills in Figma, Adobe Photoshop, Illustrator
• Understanding of composition, color, and typography principles
• Experience in creating marketing materials
• Portfolio showcasing your works
• Would be a plus experience in motion design (After Effects, Premiere Pro)
   

What you will do:

• Design graphics for email campaigns
• Develop visual materials for the website
• Create creatives for social media
   

What UpToWin offers:

• Flexible working hours to match your productivity and rhythm: 08:00–17:00, 09:00–18:00, or 10:00–19:00 (your choice)
• 17 paid vacation days (available after 6 months)
• Medical insurance (available after 6 months)
• 50–75% reimbursement for gym or sports memberships (available after 6 months)
• Salary paid in USD
• Team challenges and corporate activities you’ll actually want to attend

⚡️ AI Engineer (Middle+/Senior)

We are looking for AI Engineers to join a long-term, full-time project that is currently in the pre-sale stage. This is a high-priority opportunity, so we are seeking highly skilled specialists who meet the key technical requirements and have strong communication skills in English.

Requirements:

Proven experience with AI/ML development (preferably production-level projects)

Strong Python skills, with experience in building and deploying machine learning models

Solid understanding of deep learning frameworks (TensorFlow, PyTorch, etc.)

Experience with cloud platforms (AWS, GCP, or Azure)

Proficiency in working with APIs and data processing pipelines

English level B2 or higher – must be comfortable communicating with international teams

Ability to work independently and in a team, with strong problem-solving skills

Nice to Have:

Knowledge of MLOps practices and experience with model deployment at scale

Experience with LLMs (Large Language Models) or Generative AI solutions

Familiarity with Docker, Kubernetes, and CI/CD processes

Background in data engineering or big data tools

Responsibilities:

Design, develop, and deploy AI-driven solutions for complex business problems

Build and optimize machine learning models and pipelines

Collaborate closely with data scientists, developers, and stakeholders

Ensure scalability, reliability, and performance of AI solutions

Stay up-to-date with the latest trends and advancements in AI/ML technologies

Recruitment Process:

Recruiting interview

Technical interview

Client interview in English

Offer

If you are ready to work on impactful AI projects and meet the requirements — send us your CV today! 🚀

Boosty is a company specializing in the sale of dietary supplements.
Our mission is to simplify people's lives by helping them use fewer but more effective products. We strive to build a community that aspires to live long and healthy lives.
 

Our products contain vitamins and minerals that strengthen the immune system and improve overall health.

We are actively expanding and looking for a part-time/outsourcing Email Marketing Specialist to help us increase conversions and boost LTV through effective customer base management.

📌 Main responsibilities:

1. Create, plan, and send email campaigns (newsletters, automation, promos).
2. Segment the contact database and personalize content for different audiences.
3. Develop automation flows (welcome series, abandoned cart reminders, post-purchase journeys, reactivation).
4. Build templates in drag-and-drop editors and make basic HTML edits when needed.
5. Analyze campaign results (OR, CTR, conversions) and implement optimizations.
6. Closely collaborate with marketing, content, and sales teams to align strategy.
7. Conduct A/B testing and implement new solutions to improve performance.
    

📌 Requirements:

1. 1+ year of experience in email marketing (preferably in nutra, wellness, or e-commerce).
2. Knowledge of email platforms (Klaviyo, Mailchimp, Brevo, Iterable, or similar).
3. Experience with drag-and-drop editors and basic understanding of HTML.
4. Ability to segment customer databases and set up automation flows.
5. Basic understanding of analytics and ability to work with performance metrics.
6. Proficient English (B2+); knowledge of additional EU languages is a plus.
7. Creativity, attention to detail, and strong teamwork skills.
    

📌 Preferred qualifications:

• Hands-on experience with Klaviyo, as we are already using this tool.

📌 Hiring roadmap:

1. Interview with a recruiter.
2. Final interview.
3. Receive an offer!

📌 What we offer:

• Remote work with a flexible schedule.
• Competitive salary with regular reviews.
• Professional development and training at the company's expense.
• Participation in exciting and ambitious projects.
• Friendly and supportive team.
• Career growth opportunities within the company.
• Compensation for work equipment (if needed).
• Access to modern tools and technologies.

• Are you passionate about turning complex cloud requirements into efficient, automated AWS solutions?
• Want to join a team that specializes in hybrid and cloud solutions?
• Ready to be a part of a stable global IT company, that is one of the top 3 Microsoft, AWS & GCP partners in Ukraine?

Practical Information:

Location: Ukraine | Reports to: Services Director | Work Arrangement: Remote | Visa Requirements: Valid working visa for Ukraine | Language Requirements: Ukrainian written and spoken, communicative English written and spoken | Learn more: www.crayon.com/ua/

As our new AWS Engineer, you will be part of a team specializing in hybrid and cloud solutions, offering advice and services through AWS Cloud services. In this role, you will assist our customers in understanding the strategic and business value of transitioning to the cloud through presales activities, utilizing AWS to design, implement, and operate the cloud infrastructure environment.

Other responsibilities:

• Developing and maintaining automated deployment processes, including CI/CD pipelines, configuration management, and infrastructure as code (IaC)
• Defining and documenting infrastructure requirements, architecture, and operational procedures
• Contributing to developing common processes like cloud governance, new technologies adoption, cost management and optimization
• Supporting and collaborating with customers and partners to scope requirements, designing the solutions, and assisting in building the technical proposal
• Executing implementation of consulting projects in hybrid and on-premises infrastructures

Your Competencies:

• 2+ years' experience with architecting and delivering AWS cloud projects with proven knowledge on cloud solution setups
• Extensive experience with one or more automation frameworks, such as Terraform, Ansible, and hands-on experience with IaC deployment and automation
• Proficiency in one or more CI/CD tools
• Certified AWS Solution Architect Associate

About You:

• Keen to learn and resilient
• Methodical self-starter who is passionate about quality
• Effective collaboration and problem-solving

What’s on offer?

• Competitive salary, bonuses and social package
• Possibility to access a comfortable and modern office and workplace in the centre of Kyiv on Podil
• Ecoflow in use
• Possibility of development and career growth in an international IT company
• 100% training coverage by the company
• Medical insurance after probation
• Sharing program

At Crayon, we are deeply committed to fostering a culture of diversity, equity, inclusion, and belonging (DEIB). We believe that diversity in all its forms strengthens our team and enhances innovation and effectiveness. We welcome applications from individuals of all backgrounds, regardless of race, color, age, origin, religion, sexual orientation, gender (identity), genetic information, neurodiversity, disability, or any other basis protected by local laws and regulations.

When filling vacancies, we prioritize equally qualified candidates who bring diverse backgrounds and experiences, helping to enrich our team dynamics and foster a vibrant, inclusive work environment.

If you require any assistance or reasonable accommodation during the application process, please let us know.

Apply to join an award-winning employer!

Join a cutting-edge project focused on building scalable, production-ready AI systems that power an advanced chatbot and intelligent search experience. You will work with large language models (LLMs), design robust data pipelines, and develop high-performance vector search solutions that integrate seamlessly with real-world user interactions.

The Ideal Candidate:

• 5+ years of experience with Python (Pandas, NumPy, FastAPI, LangChain, etc.).
• Deep hands-on expertise with LLMs (OpenAI, AWS Bedrock, or similar) and prompt engineering.Strong knowledge of PGVector (Postgres) and experience with NLP solutions.
• Proven track record in building ETL pipelines.
• Excellent communication and presentation skills, able to explain technical concepts clearly to clients.
• English level B2+.
• Leadership mindset: able to guide, mentor, and inspire the team.

What You Will Do:

• Design and implement robust ETL pipelines for structured and unstructured data
• Generate embeddings and maintain vector databases for semantic search
• Integrate LLMs and fine-tune prompts for intelligent chatbot interactions
• Develop logic for intent detection, ranking, and contextual responses
• Collaborate with engineers to integrate APIs, test, and deploy models
• Optimize performance, security, and scalability of AI/ML components
• Build feedback loops for continuous model improvement and adaptation
• Track metadata and ensure role-based access and compliance

What the Company Offers:

• Remote full-time opportunity on a B2B contract
• Involvement in a high-impact AI-driven product
• Cross-functional collaboration and autonomy in decision-making
• Scalable and challenging architecture in a fast-paced environment
• Flexible working hours and a highly skilled international team

We are hiring a Senior Full Stack Developer for a fast-growing European software company that builds large-scale fintech and travel-tech solutions. The company partners with international clients, delivering end-to-end development and cloud-native platforms.
 

This is a long-term contract role (12 months + extension), offering hybrid work in Poland (2 days on-site, rest remote).
 

Responsibilities

• Develop and maintain full stack applications using Angular + Python (FastAPI)
• Design and implement microservices and scalable APIs
• Work with SQL/NoSQL databases
• Integrate with cloud platforms (Azure, AWS)
• Collaborate with international teams in an English-speaking environment
• Contribute to system design and RAG engineering/MCP-related tasks
   

Requirements

• 5+ years of commercial experience with Angular
• 5+ years of commercial experience with Python
• Strong knowledge of FastAPI
• Solid experience with microservices architecture
• Hands-on with Azure & AWS cloud services
• Strong database background (SQL & NoSQL)
• Familiarity with MCP, RAG engineering
• Fluent in English
• Already in Poland or ready to relocate
   

Why join?

• Great company atmosphere and comfortable communications;
• 20 working days of vacation and 20 sick days;
• Development support;
• Free English classes;
• Financial support for learning;
• Financial support for sports;
• Accounting support.

At FluidLabs, we are launching a new direction in collaboration with DocuSign — one of the world’s leading players in digital signatures and contract management.
This is a rare opportunity to join a large-scale project and become a top-tier expert across the entire DocuSign product ecosystem, building unique expertise with true global value.


Key responsibilities:

• Design, develop, and maintain back-end services using Node.js and TypeScript
• Build and optimize serverless applications on AWS Lambda
• Work with DynamoDB (data modeling, performance tuning, query optimization)
• Set up monitoring, logging, and alerting via AWS CloudWatch
• Implement and maintain secure authentication/authorization flows with OAuth2/OIDC
• Collaborate with front-end engineers, architects, and product managers to deliver scalable solutions
• Write clean, maintainable, and well-tested code (TDD when possible)
• Participate in code reviews, provide feedback, and ensure high code quality
• Contribute to technical discussions, propose solutions, and share knowledge with the team

• Troubleshoot production issues, optimize performance, and ensure system reliability

   

Must-have technical skills:

• Strong proficiency in TypeScript
• Hands-on experience with Node.js (building and maintaining production-grade applications)
• Proven experience with AWS Lambda (serverless architecture)
• Practical knowledge of AWS DynamoDB (NoSQL data modeling, queries, performance tuning)
• Experience with AWS CloudWatch (monitoring, logging, metrics, alerts)

• Solid understanding and implementation of OAuth2 / OIDC (authentication & authorization flows)

   

Nice to have:

• Experience working with DocuSign products and building integrations on top of them
• Hands-on experience with event-driven architectures (SQS, SNS, Kinesis, RabbitMQ, WebSockets)
• Familiarity with broader AWS ecosystem (API Gateway, S3, Step Functions, IAM policies)
• Solid grasp of CI/CD workflows (GitLab CI, GitHub Actions, or similar)
• Knowledge of software design principles (SOLID, DDD, TDD)

• Some exposure to frontend frameworks (React, Next.js) for seamless integration

   

What we offer:

• Long-term collaboration on meaningful projects
• A passionate team with a healthy, positive culture
• Enterprise-level projects with real technical challenges
• Room to grow — both professionally and personally
• Partial tax compensation
• Referral bonuses for successful candidate recommendations
• Paid holidays and time off
   

Work terms:

• Working hours: 11:00–20:00 (Kyiv time)
• Vacation: 24 paid days per year
• Trial period: 3 months
  
   

We are an iGaming company with over three years of experience and a team of more than 1000+ specialists.

Our achievements include 8 major projects that are popular among our clients and successfully operate in Tier 1-3 countries. 
The company attracts and values highly qualified specialists, which allows us to efficiently build processes and successfully expand our presence in new locations.

With the launch of a new project, we are seeking an SEO Specialist who will play a pivotal role in the development, optimization, and management of our SEO product.

What you will do:

• Daily collection and monitoring of search engine results page (SERP) data.
• Conducting comprehensive competitor analysis: evaluating content, backlink profiles, and rankings.
• In-depth analysis of collected data to identify trends and patterns.
• Formulating conclusions and presenting practical, data-driven recommendations to improve SEO strategy.
• Maintaining a continuous and high-quality data processing workflow.
• Proposing ideas for improving and automating data collection and analysis processes.

• Conducting SEO experiments to test hypotheses.

   

What experience is important to us: 

• At least 6 months of hands-on experience in SEO.
• Analytical mindset and a systematic approach to problem-solving.
• Proficiency with spreadsheets (Google Sheets/Excel).
• Understanding of search engine ranking principles.
• Understanding of how textual, behavioral, and link-based algorithms work.

• High learning ability, willingness to experiment, and a desire to grow in SEO.

   

Will be an advantage:

• Experience in the iGaming niche.
• Basic understanding of markup and web technologies (HTML, CSS, JavaScript).
• Experience working with Private Blog Networks (PBNs).
• Experience with tools such as: Google Search Console, Ahrefs, SEMrush, Screaming Frog SEO Spider, and others.

Why you should join us:

• Work equipment – everything you need for your productivity and comfort.
• Paid vacation and sick leave – we care about your health and timely rest. 
• Cool creative gifts for holidays and events – we know how important it is to delight our employees on special occasions.
• Competitive salary – your contribution will be properly valued.
• Participation in company internal events – knowledge exchange among colleagues and enhancing your expertise.
  Freedom from micromanagement and rigid hierarchies – we make decisions quickly, and you can always reach out for advice directly from any team member.
• Referral program in the company – build a dream team with us and receive nice bonuses.

100% guaranteed professional development and acquisition of new skills.

As a team, we are constantly striving to be the best among our competitors! We offer a dynamic, forward-thinking work environment within a profitable company. We recognize that our specialists and managers are crucial to our success and are always ready to support their initiatives.

Join the best! 🚀

We're looking for a Senior Full Stack Developer (Node.js+React.js+Next.js). 

Requirements:

Basic Qualifications:

- Min 3 years of experience working as a full stack developer 
- Strong experience with Node.js.
- Proficiency in React.js, Next.js and modern JavaScript (ES6+).

- WordPress (custom themes and plugins) and PHP (Laravel)- is a plus.
- Solid knowledge of HTML, CSS, and responsive design principles.
- ⁠Experience working with REST APIs, SQL, and NoSQL databases.

- Experience with Git, CI/CD workflows, and Agile/Scrum methodologies.
- ⁠Working knowledge of AWS services and cloud-based architecture.
•⁠  ⁠Excellent communication skills in English.

•⁠  ⁠Excellent communication skills in Ukrainian.
 

Bonus Points (Nice-to-Have):

•⁠  ⁠Experience GraphQL
•⁠  ⁠⁠Experience working with headless CMS platforms (e.g., WordPress REST API, Strapi, etc.).
•⁠  ⁠Experience with Microservices architecture.
•⁠  ⁠Familiarity with Docker and containerized deployment technologies.

Job Description:

We are seeking a highly skilled Senior Python Developer with a minimum of 5 years of experience to join our dynamic team. The ideal candidate will have a strong background in Python development, along with expertise in the following tech stack: Mongo DB, FAST API framework, PostgreSQL, SqlAlchemy, Unit tests, and AWS.

Responsibilities:

Design, develop, and maintain scalable and robust backend solutions using Python and associated technologies.

Collaborate with cross-functional teams to define, design, and ship new features.

Ensure high performance and responsiveness of applications by optimizing code and database queries.

Write efficient, reusable, and reliable Python code following best practices.

Implement unit tests and conduct code reviews to ensure code quality and maintainability.

Work closely with DevOps teams to deploy applications on AWS infrastructure.

Troubleshoot and debug production issues and provide timely resolution.

Stay updated with the latest trends and technologies in Python development and suggest improvements to enhance system performance and efficiency.

Requirements:

Bachelor's degree in Computer Science, Engineering, or a related field.

Minimum of 5 years of experience in Python development.

Proficiency in working with Mongo DB, FAST API framework, PostgreSQL, SqlAlchemy, Unit tests, and AWS.

Strong understanding of object-oriented programming concepts and design patterns.

Experience with RESTful API development and integration.

Familiarity with containerization technologies like Docker.

Excellent problem-solving and analytical skills.

Strong communication and interpersonal skills, with the ability to collaborate effectively in a team environment.

Ability to work in a fast-paced and dynamic environment, handling multiple tasks simultaneously.

The CHI Software team is not standing still. We love our job and give it one hundred percent of us! Every new project is a challenge that we face successfully. The only thing that can stop us is… Wait, it’s nothing! The number of projects is growing, and with them, our team too. 
We are looking for a talented Data Engineer (GCP) to play a key role in implementing and supporting data solutions. This is a highly technical role with the opportunity to work on innovative tasks.
 

About the client:

Our client is a global consulting company headquartered in New York, with 60+ offices worldwide. Their 4,500+ professionals deliver strategic solutions for major players in the retail sector.

Requirements:

• 4+ years of experience as a Data Engineer;
• Strong knowledge of Python, SQL, Groovy (Bash scripting is a plus);
• Experience with Jenkins, GCP, and BigQuery;
• Hands-on experience with ETL tools such as Airflow;
• Familiarity with JIRA, Confluence, and other collaboration tools;
• Solid understanding of engineering best practices: version control, code reviews, coding standards;
• Experience working in an Agile (Scrum) environment;
• Upper-Intermediate English level.
   

Responsibilities:

• Expand the functionality of the existing data platform built on GCP (BigQuery);
• Add new client datasets, integrate them into the existing architecture, and submit them for product owner approval;
• Develop new features and rewrite legacy solutions;
• Handle incidents related to data quality, acting as the main contact point between the client and stakeholders;
• Manage release processes: use Jenkins (with Groovy scripts) to apply changes, fix bugs, and add new capabilities;
• Utilize Airflow as the ETL tool (create new DAGs, modify existing ones);
• Develop dashboards to monitor system health and enable proactive issue resolution;

• Work with Google Cloud services (e.g., Secret Manager for password access, system configuration changes);

   

Our perks

• Covered vacation period: 20 business days and 5 days off
• Free English classes
• Flexible working schedule
• Truly friendly and supporting atmosphere
• Working remotely or in one of our offices
• Medical insurance for employees from Ukraine
• Compensation of psychological counseling
• Legal support
• Relocation assistance

Softcery is a small, focused team building AI-driven B2B software solutions. We work closely with clients in the US and UK to launch AI voice agents and develop custom B2B platforms. Most of our work involves advanced R&D and complex problem-solving.
 

We’re looking for a B2B Marketing Specialist who can scale our content marketing and drive tangible business results. You’ll own content strategy and execution across all channels — from technical deep-dives that showcase our AI capabilities to website copy that converts founders into qualified leads.
 

This isn’t about managing campaigns or coordinating teams. This is about producing high-quality, high-volume content that builds trust with AI-focused founders and executives who need serious technical partners.
 

We are looking for our future team member in Lviv, as we have meetings at a coworking space. We also regularly organize online and offline meetings with the entire team to keep in touch, even during remote work.

 

What You’ll Do:

• Create comprehensive content strategies for AI-focused B2B audiences — founders, CTOs, and executives evaluating AI implementation partners.
• Write technical content that sells — articles, case studies, and thought leadership that demonstrates our AI expertise while driving pipeline.
• Develop website copy and landing pages that convert technical decision-makers into qualified leads.
• Produce presentation materials for sales calls, conferences, and partnership meetings.
• Manage social media presence — LinkedIn posts, comments, and engagement that builds credibility in AI/B2B software communities.
• Collaborate with our technical team to translate complex AI implementations into compelling business stories.
• Analyze and optimize content performance to improve lead generation and pipeline quality.

What We’re Looking For:

• 2+ years of B2B marketing experience in software services, consulting, or custom development services with up to 50 people.
• Proven track record creating content that drives qualified leads and supports complex B2B sales cycles.
• Deep understanding of AI/ML landscape — you know the difference between ChatGPT integrations and custom AI systems, and can communicate technical capabilities to business audiences.
• Content strategy expertise — you’ve built and executed content programs that scale, not just individual pieces.
• Technical curiosity — ability to quickly grasp AI implementations, SaaS architectures, and custom development projects.
• Self-directed execution — you can work independently, prioritize effectively, and deliver results in a startup environment.
• Experience working with technical teams — you know how to extract insights from engineers and product leads to create compelling content.
• Exceptional writing skills in English (C1+) — you can explain complex technical concepts clearly and persuasively.

Nice to Have:

• Previous experience marketing AI/ML products or services.
• Background in technical writing or developer marketing.
• Experience with account-based marketing for high-value B2B deals.
• Knowledge of marketing automation and lead nurturing systems.

What We Offer:

• Structured onboarding & dedicated support — you’ll get a clear onboarding plan, documented workflows, and a team that’s got your back.
• Flexible remote schedule — work from wherever and whenever you’re most productive.
• Learning budget — we cover books, courses, English lessons, and AI tools for your professional growth.
• Full accounting support — so you can focus on the work, not the paperwork.
• Time off — 20 paid vacation days, 12 sick days, 2 paid period leave days/month (for women), and your birthday off.
• IT Cluster membership — access to professional events and networking opportunities in the local tech community.

🔁 Hiring Process: Recruiter Interview → Qualification Interview → Final Interview → Reference Check.

 

Send us your CV and a short note. We’re excited to meet you 👋

We are seeking an experienced CDN & WAF Engineer to help build, harden, and scale our CDN and Web
Application Firewall (WAF) product. You will be responsible for implementing new features,
optimizing performance, and improving security controls across our edge stack. This role
requires deep hands-on expertise in Nginx/OpenResty, Lua, C/FFI module development, eBPF,
Linux networking and infrastructure-as-code tooling.

Responsibilities
• Design, implement and ship features and improvements for our CDN and WAF edge
stack.
• Develop and maintain Lua code running in Nginx/OpenResty and build high-
performance C modules or FFI bindings where needed.
• Implement packet- and kernel-level observability or filtering using eBPF (including
XDP/eBPF tracing for telemetry and enforcement).
• Tune and troubleshoot high-volume Nginx deployments for latency, throughput and
memory usage.
• Define, author and maintain WAF rule logic, request/response inspection and mitigation
workflows.
• Build automation for deployment and configuration using Infrastructure-as-Code
(Ansible, Puppet, Terraform, or similar).
• Work with networking protocols and operational requirements of a CDN: BGP, anycast,
TCP/IP stack, load balancing, connection handling.
• Create and run performance/load tests, fuzzing and security tests; profile and optimize
hotspots.
• Produce clear design documentation, runbooks, and hand over completed work to
operations. Participate in code reviews and mentor engineers.
• Collaborate with product, security and SRE teams to align feature work with product
goals and SLAs.

Required Qualifications
• 5+ years of production experience in Linux systems engineering, networked services or
edge infrastructure.
• Strong hands-on experience with Nginx and Lua (ngx_lua/OpenResty) including writing
Lua modules for request processing.
• Familiarity or experience building native C modules or FFI bindings used by Nginx/Lua;
comfortable with libc, POSIX APIs and building/packaging C extensions.
• Practical experience with eBPF (tools, BCC/libbpf, XDP) for telemetry, filtering or
tracing.
• Deep knowledge of networking and TCP/IP internals, load balancing, and CDN
operational patterns. Familiarity with BGP and anycast is a plus.
• Experience with Web application firewall, either appliance, service or software and its
capabilities.
• Solid Linux kernel and userland troubleshooting skills: perf, tcpdump/wireshark, strace,
systemtap.
• Experience with Infrastructure-as-Code and configuration management (Ansible, Puppet,
Chef, Terraform or similar).
• Experience deploying and maintaining WAF rulesets and policies; understanding of
OWASP top risks and typical web attack patterns.
• Experience with testing and benchmarking tools (wrk, ab, locust, etc.) and CI/CD
pipelines.
• Excellent communication skills; able to work independently and collaborate effectively
with distributed teams.

Preferred / Nice-to-have
• Prior experience building or operating CDNs or edge platforms.
• Familiarity with web security tooling/modsecurity or other WAF platforms.
• Experience with container workflows and edge deployment (Docker, HashiCorp Nomad).
• Exposure to cloud providers’ networking (AWS/GCP/Azure) and hybrid edge
deployments.
• Familiarity with observability stacks: Prometheus, Grafana, ELK/EFK.
• Experience cross-compiling or packaging modules for multiple Linux distributions.
• Experience programming in Lua and C, with familiarity using LuaJIT and the Lua FFI
for native, high-performance integrations.

Engagement Details
• Contractor position; term length: 1 year with possible extension based on outcomes.
• 100% remote. Some overlap (4–6 hours) with US timezones (EST/CST/MST/PST) or
Brazil (BRT) preferred for meetings.
• This position requires participation in an on-call rotation for high-severity and customer-
impacting incidents; availability for urgent response within agreed SLAs is expected.
• Competitive hourly/day rate dependent on experience.

Social package & benefits:

- Full medical insurance 
- MacBook & accessories
- English lessons

- Accountant assistance

- Minimal bureaucracy, synergy, and formalities, primarily focusing on effective communication