Jobs at Djinni

Project Description

A B2B marketing analytics platform for LinkedIn advertisers wants to know whether the early signals of an ad campaign can predict its outcome months ahead. Small B2B advertisers close only a handful of deals per year, so standard attribution has too little data to work with. The proof of concept tests a different approach on the platform's historical data across many advertisers. Engagement and website signals from the first 7-21 days of a campaign are combined into a surrogate index that predicts later pipeline outcomes and states how confident the prediction is.

The PoC is time-boxed to 5-6 weeks and ends with a Go or No-Go decision backed by numbers.

Client Description
A B2B marketing analytics platform for LinkedIn

• A B2B marketing analytics platform for LinkedIn advertisers wants to know whether the early signals of an ad campaign can predict its outcome months ahead. Small B2B advertisers close only a handful of deals per year, so standard attribution has too little data to work with. The proof of concept tests a different approach on the platform's historical data across many advertisers. Engagement and website signals from the first 7-21 days of a campaign are combined into a surrogate index that predicts later pipeline outcomes and states how confident the prediction is.
   

Requirements:

• 5+ years of applied data science or statistics at a senior level.
• Strong command of regression modeling, including regularized and hierarchical (multilevel) models.
• Proven experience with small or sparse datasets and with probability calibration.
• Rigorous validation practice: temporal splits, leakage prevention, overfitting control.
• Python (pandas, scikit-learn, statsmodels) and SQL.
• Ability to explain uncertainty to non-technical stakeholders.
• English - upper-intermediate.

Nice to have

• Bayesian tooling such as PyMC, Stan or bambi.
• Familiarity with surrogate index and proxy metric methods, such as the work of Athey, Chetty, Imbens and Kang.
• B2B marketing analytics: attribution, account-based marketing, LinkedIn Ads, CRM pipeline data.
• Holdout design, controlled experiments and sequential testing.
  Statistical process control.
• Part-time, 0.5-0.8 FTE, about 20-32 hours per week.
  5-6 weeks, starting in October 2026, exact date to be confirmed.
• Possible continuation into productization if the PoC succeeds.

Responsibilities:

• Define, together with the client and a business analyst, what counts as campaign success, the outcome window and the cut-off between signals and outcome.
• Design the analytical dataset: candidate signals, outcome labels, exclusion rules and safeguards against future information leaking into the signals. A Python data engineer builds the dataset in ClickHouse to this design.
• Build the surrogate index as a regularized or hierarchical model, with signal weights shared across advertisers and adjusted per advertiser in proportion to its own data volume.
• Validate the model on campaigns it has not seen: temporal backtesting and leave-one-advertiser-out evaluation, with AUC, Brier score and calibration curves.
• Compare the model against the current practice of judging campaigns by CTR and CPC, and measure how prediction quality changes between day 14 and 21.
• Run error analysis, source ablation and learning curves to show which data is missing for a reliable forecast.
• Present weights, patterns and uncertainty to the team and reccomend Go or No-Go for the future phase.
   

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.

We are looking for a Lead Generation Specialist who will work primarily on UpWork. As a lead generator, you’ll help us generate qualified sales opportunities from Upwork, qualify customers, and assist the Sales Manager in closing deals.

Responsibilities:

• Scan & qualify opportunities on UpWork across different categories: UI/UX Design and Web Development.
• Create high-quality bids and proposals.
• Track conversion rates, review analytics, and keep the CRM & pre-CRM up to date.

• Qualify customer replies and book calls with SQL.

   

Requirements:

• At least 1 year of experience in UpWork lead generation.
• Upper-intermediate to advanced English proficiency, with fluent written communication.
• Ability to write concise, value-based proposals.
• Understanding of UX/UI Design and popular frameworks, approaches, and trends in Web Development.
• Deep understanding of lead qualification processes and reply management.
• High proficiency with Google Sheets, including filtering, combining lead databases, using formulas, and preparing .CSV files.

• Experience with HubSpot.

   

Would be a plus:

• Experience with LinkedIn email generation and campaign tools (such as Instantly, Smartlead, or similar), LinkedIn automation tools (such as Lemlist, HeyReach, Phantom Buster), and enrichment platforms (such as FullEnrich or similar).
• Experience in scraping data from various sources, building lead lists, enriching them, and validating emails using automation tools.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote. 

We are the creators of a new fintech era!
Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.
We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.

The future of Web3 starts with you: join us as a Senior Analyst.

Requirements:

— 5+ years in analytics at a Trading Desk, CEX, prop trading or market-making firm — not bank BI analytics
— Deep hands-on knowledge of trading mechanics: P&L attribution, spread, slippage, funding rates, quoting uptime, inventory exposure — candidate knows these metrics from practice, not from textbooks
— Python — mandatory: pandas, numpy, report automation, exchange 
API data processing
— SQL — advanced: window functions, CTEs, time-series aggregations
— Tableau — proficient: calculated fields, blending, workbook publishing
— Grafana — operational dashboard design, alert configuration
— Track record of building P&L, position, and operational reports from scratch for a trading desk
— Ability to define the right KPIs independently without extensive onboarding
— Understanding of crypto exchange mechanics: derivatives, futures, spot/perp

Responsibilities:

— Build and own management reporting — independently, from week one
— Configure and maintain dashboards for real-time operational monitoring with alerting
— Audit existing dashboards and correct inaccurate metrics — including restoring broken monitors
— Independently define KPIs: proposes the structure, does not only execute tasks
— Formulate data requirements and pass requests to the tech team
— Support the reporting cycle (daily / weekly / quarterly) with direct interaction with desk heads
— Document calculation methodology and standardise metric definitions

It will be a plus:

— Experience working with market makers or institutional liquidity providers
— Familiarity with major CEX platforms (OKX, Binance, Bybit)
— Experience integrating external market datasets

Working conditions:

Immerse yourself in Crypto & Web3:
— Master cutting-edge technologies and become an expert in the most innovative industry.
Work with the Fintech of the Future:
— Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
— Gain unique experience and be part of global transformations.
Drive Innovations:
— Influence the industry and contribute to groundbreaking solutions.
Join a Strong Team:
— Collaborate with top experts worldwide and grow alongside the best.

Work-Life Balance & Well-being:
— Modern equipment.
— Comfortable working conditions, and an inspiring environment to help you thrive.
— 22 business days of paid leave.
— Additional days off for national holidays.
— Health insurance.

We are the creators of a new fintech era!
Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,200 professionals united by a shared vision of shaping the Web3 future.
We are building our own blockchain ecosystem, ensuring maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.
Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT, and VISA.

The future of Web3 starts with you — join us as Risk Manager!

 

Requirements:

- 4+ years of experience in risk management, including 2+ years in crypto or digital assets;
- Bachelor's or Master's degree in Finance, Economics, Quantitative Finance, Mathematics, Engineering, or a related field;
- Solid understanding of market microstructure and how trading strategies generate and hold risk exposure;
- Practical knowledge of market risk metrics and methodologies - VaR/CVaR, stress testing, scenario analysis, P&L attribution;
- Proficiency in working with data (SQL), BI tools (Tableau/Grafana), and automating KRIs/reporting;
- Hands-on experience with crypto spot and derivatives markets;
- Knowledge of risk identification methodologies and practical application (SWOT, checklists, environmental analysis, expert assessment);
- Hands-on experience with crypto platforms and DeFi protocols;
- FRM, CFA, PRMIA, or similar certifications are a plus.

Mindset & Soft Skills:
- Proactive and initiative-driven;
- Highly organized with strong attention to detail;
- Comfortable in a fast-paced environment;
- Excellent communication and negotiation skills;
- Balanced and pragmatic decision-making;
- Resilient under pressure;
- Strong mentoring mindset.

Responsibilities:

- Develop, implement, and own the risk framework, including risk appetite and exposure limits;
- Monitor market, liquidity, and counterparty risk;
- Monitor and analyze P&L and risk exposure, distinguishing performance drivers from risk exposure;
- Review risk parameters with the trading and quant teams;
- Conduct stress testing and scenario analysis to evaluate the resilience;
- Define and maintain Key Risk Indicators (KRIs) and early-warning systems;
- Prepare regular risk reports for senior management;
- Coordinate the work of risk analysts and provide mentorship;
- Support incident response and crisis management for trading-related events;
- Collaborate with Strategy, Ops, and Engineering teams to ensure comprehensive risk identification and mitigation planning.

Work conditions

Immerse yourself in Crypto & Web3:
— Master cutting-edge technologies and become an expert in the most innovative industry.
Work with the Fintech of the Future:
— Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
— Gain unique experience and be part of global transformations.
Drive Innovations:
— Influence the industry and contribute to groundbreaking solutions.
Join a Strong Team:
— Collaborate with top experts worldwide and grow alongside the best.
Work-Life Balance & Well-being:
— Modern equipment.
— Comfortable working conditions, and an inspiring environment to help you thrive.
— 24 calendar days of paid leave.
— Additional days off for national holidays.

Job Description:
 

• Bachelor of Science in Computer Science, Electrical Engineering, or a related field plus heavy experience in low-level network programming.
• Mastery of Rust (for DPDK tre_flow), and Go for high-performance networking software.
• Solid understanding of Linux network stack internals, socket layers, and packet processing.

• Network feature development.

   

  Nice to Have Skills

• Experience porting custom network daemons (Goblin, Comet) to new CPU architectures.

   

Job Responsibilities:
 

• Port internal networking daemons and tools (Goblin, Comet, golinject) to run natively on ARM64 host environments.
• Local Environment & Stack Setup: Stand up and maintain a local development environment running the entire Akamai Compute (Linode) stack (e.g., running on a single VM owned by the developer).
• Debugging & ARM Porting: Proactively identify and debug complex issues across the software stack (including VMs, VM disks, and networking), and port existing software stack components to the ARM architecture.
• Network Feature Development: Develop and enhance networking capabilities, including adding support for protocols (such as DHCPv6) into networking daemons and offloading network stack processing into NICs.
• Performance & Profiling: Conduct performance tuning and packet-throughput profiling on high-speed network interfaces.
• Cross-Team Collaboration: Proactively flag identified issues and collaborate with other engineering teams to drive resolutions.
   

Department/Project Description:

Seeking a Mid-Level Software Engineer to join the Platform Networking Team. The team builds low-level networking software, driver integrations, and custom daemons powering our data center network fabric. You will port network daemons and enable next-generation SmartNIC and NIC hardware support on our new ARM server fleet.

We are the creators of a new fintech era!

Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,500 professionals united by a shared vision of shaping the future.

We are building our own blockchain ecosystem to ensure maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.

Our official partners include Juventus, FC Barcelona, Lifecell, FACEIT, and VISA.

Join us as an Quantitative Researcher. 

Requirements:

• 4–6+ years of experience in Information Security, GRC, Risk Management, Compliance, IT Audit, or a related field.
• Strong practical knowledge of information security and compliance frameworks such as ISO 27001, SOC 2, PCI DSS, CCSS or similar.
• Experience working with applicable regulatory requirements such as NIS2, DORA, GDPR, or other relevant regulations.
• Hands-on experience conducting information security risk assessments, control assessments, gap analyses, and compliance reviews.
• Experience supporting or coordinating internal and external audits, certifications, and regulatory assessments.
• Ability to independently manage compliance initiatives, track remediation activities, and follow up with control owners.
• Experience developing, reviewing, and maintaining security policies, standards, procedures, controls, and related documentation.
• Understanding of common information security domains, including access management, vulnerability management, incident management, third-party risk, business continuity, cloud security, and data protection.
• Experience working with third-party/vendor risk assessments and security due diligence.
• Experience responding to customer security questionnaires, RFIs/RFPs, or customer compliance requests.
• Ability to translate regulatory, contractual, and security requirements into clear and actionable controls for technical and business teams.
• Strong stakeholder management skills and experience collaborating with Security, IT, Engineering, Legal, Privacy, Procurement, and business teams.
• Strong analytical skills and ability to identify, assess, document, and communicate security and compliance risks.
• Excellent written and verbal communication skills, including the ability to explain GRC topics to both technical and non-technical stakeholders.
• Strong organizational skills and ability to manage several compliance, risk, and audit activities in parallel.
• Ability to work independently, prioritize effectively, and take ownership of GRC activities from identification through remediation and closure.
• Professional working proficiency in English.

Nice to have:

• Experience in SaaS, cloud-based, technology, or other highly regulated environments.
• Experience with GRC platforms or compliance automation tools such as ServiceNow GRC, OneTrust, Vanta, Drata, AuditBoard, or similar.
• Familiarity with cloud platforms such as AWS, Azure, or GCP from a governance and compliance perspective.
• Relevant professional certifications such as CISA, CISM, CRISC, CISSP, ISO 27001 Lead Implementer, or ISO 27001 Lead Auditor.
• Experience participating in or leading compliance improvement and control maturity initiatives.

Responsibilities:

• Own and coordinate day-to-day GRC activities across information security, risk management, compliance, and assurance.
• Conduct information security risk assessments, identify control gaps, document risks, and track remediation actions with relevant owners.
• Support the implementation, maintenance, and continuous improvement of security and compliance frameworks such as ISO 27001, SOC 2, PCI DSS, and other applicable standards.
• Monitor relevant regulatory and contractual requirements and help translate them into practical security controls and compliance activities.
• Coordinate and support internal and external audits, certification activities, customer assessments, and regulatory reviews.
• Maintain and improve security policies, standards, procedures, control documentation, risk registers, and other GRC documentation.
• Perform control assessments and periodically evaluate the effectiveness of implemented security controls.
• Track audit findings, compliance gaps, risks, and remediation plans through to closure.
• Support third-party and vendor security risk assessments, including due diligence and ongoing risk reviews.
• Manage and respond to customer security questionnaires, security reviews, and compliance-related requests in collaboration with relevant teams.
• Partner with Security, IT, Engineering, Legal, Privacy, Procurement, and business stakeholders to ensure security and compliance requirements are understood and implemented.
• Provide guidance to control owners on compliance requirements, risk treatment, evidence collection, and remediation activities.
• Identify opportunities to improve and automate GRC processes, evidence collection, reporting, and compliance monitoring.
• Develop and maintain GRC metrics, dashboards, and reporting to provide visibility into risks, compliance status, audit findings, and remediation progress.
• Support security awareness and compliance initiatives where relevant.
• Stay informed about changes in security standards, regulations, and industry practices and assess their potential impact on the organization.

Working terms

Immerse yourself in Crypto & Web3:Master cutting-edge technologies and become an expert in the most innovative industry.

Work with the Fintech of the Future:

• Develop your skills in digital finance and shape the global market.

Take Your Professionalism to the Next Level:

• Gain unique experience and be part of global transformations.

Drive Innovations:

• Influence the industry and contribute to groundbreaking solutions.

Join a Strong Team:

• Collaborate with top experts worldwide and grow alongside the best.

Work-Life Balance & Well-being:

• Modern equipment.
• Comfortable working conditions, and an inspiring environment to help you thrive.
• 24 calendar days of paid leave.
• Additional days off for national holidays.

With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!

Let’s Build the Future Together!

We're looking for an experienced C++ System Engineer to build, customize and maintain our own Chromium-based browser fork. The role involves working with Chromium source code, deep modification for specific business needs, performance optimization and setting up the infrastructure for regular upstream updates.

 Responsibilities 

- Build clean Chromium from scratch for Windows, macOS and Linux.

 - Modify Chromium source: strip Google telemetry, customize the network stack, control fingerprint generation algorithms. 

- Set up and optimize CI/CD pipelines for automated browser builds and testing. 

- Regularly port security patches and new releases from the main Chromium branch (upstream updates). 

- Profile, find and fix memory leaks, optimize performance.

 Requirements 

- 3+ years of commercial C++ development (C++17/20).

 - Hands-on experience with Chromium, CEF or WebKit architecture and source code. 

- Deep understanding of multi-process browser architecture: IPC, sandbox. 

- Confident with depot_tools, GN, Ninja. 

- Experience with large monorepos in Git, complex merge/rebase conflicts.

 - Understanding of network protocols: HTTP/S, WebSockets, WebRTC, SSL/TLS, proxy handling. 

Nice to have 

- Background in CyberSecurity, AdTech or anti-detect browsers.

 - Own powerful workstation for local builds, or experience with cloud build servers (AWS/GCP). 

- Experience optimizing V8 or Blink. 

We offer 

- Technically challenging R&D project, no routine. 

- Flexible schedule, minimal bureaucracy. 

- On-time payment and long-term cooperation, including fork maintenance after release.

Kraków, Poland. Hybrid — 2 days per week from the office.
Own Caliente's data lake — the system of record for millions of financial events a day (bets, wallet movements, live odds) across 12M+ active users. You decide how that data lands, is stored, retained, and governed on S3 + Snowflake/Databricks, so analytics, finance, and regulators all see accurate, reconciled data with zero drift from source.

Kraków, Poland. Hybrid — 2 days per week from the office. 

What you'll be doing

• Own the lakehouse architecture: bronze/silver/gold layers, Iceberg/Delta tables, schema evolution.
• Land operational data via CDC streaming (Kafka, Debezium), handling late and duplicate events.
• Design data layout for speed and cost: partitioning, compaction, file sizing, query performance on Trino/Athena/Snowflake.
• Own retention and archival: storage tiering, regulatory retention, immutability, GDPR deletion.
• Guarantee correctness: freshness SLAs, drift detection, reconciliation against the source wallet and ledger systems.
• Own governance: catalog and lineage, row/column access control, PII masking, encryption, audit trails.
• Monitor ingestion health, data anomalies, and cloud storage/compute spend.

Must-have

• Lakehouse architecture — bronze/silver/gold layering, an open table format (Iceberg, Delta, or Hudi), schema evolution.
• Data layout & query optimization at TB+ scale — partitioning, compaction, file sizing, query performance on Trino/Athena/Snowflake.
• Cloud lakehouse/DWH in production — Snowflake, Databricks, or BigQuery.
• CDC & streaming ingestion — Kafka + Debezium or equivalent; late, duplicate and out-of-order events.
• Strong SQL and data modeling — enough relational grounding to reason about the OLTP systems you capture from. Critical for financial ledgers.
• Correctness — freshness SLAs, drift detection, reconciliation against source wallet/ledger systems.
• Governance — catalogs, lineage, row/column access control, PII masking, retention, GDPR deletion.
• Cloud object storage — S3 or GCS, plus storage tiering and archival.
• Python and an orchestrator — Airflow or Dagster, as tools.

Nice to have

• Fintech, iGaming, or another regulated, audit-heavy environment.
• Cost monitoring / FinOps for storage and compute spend.
• Hudi specifically; Dagster specifically.
• Immutability / WORM regulatory retention.

Hi!
We are Boosta, a holding tech company that creates, develops, and invests in digital businesses with global potential. Today, we collaborate with over 800 specialists from different parts of the world, and millions of users use our products and services.

We are looking for a Junior+ Financial Controller to join our team and support the revenue-related financial operations of our projects. This role is focused on accounts receivable management, financial reconciliations, payment control, and cooperation with partners and the Affiliate department. 

What you will do: 

• Manage accounts receivable: track accrued and actual revenue, monitor payment deadlines, and follow up on overdue payments.
• Work in accounting systems: record revenue and expenses, prepare invoices, record payments, and ensure the accuracy of transactions.
• Communicate with partners on financial matters: send payment inquiries, clarify reasons for delays, and resolve discrepancies.
• Cooperate with the Affiliate department: prepare invoices for placements and advise the team on settlement-related matters.

• Perform reconciliations and prepare reports: conduct settlement reconciliations with partners, prepare fund withdrawal requests, and monitor revenue-related KPIs.

   

What we expect from you: 

• At least 1 year of experience as a Financial Controller. 
• Higher education in Accounting and Auditing, Finance, Economics, or related fields.
• Confident proficiency in Excel and Google Sheets: working with formulas, analyzing and checking data, preparing and reconciling financial spreadsheets.

• Basic understanding of accounting principles and financial reporting.

   

Will be a plus:

• Practical experience with accounts receivable and understanding of affiliate marketing principles.
• Experience working with accounting software or ERP systems (1C, BAS, QuickBooks, Xero, SAP, Oracle, etc.).

• Experience preparing financial reports, performing reconciliations, and controlling payments.

   

Your journey with us: 

• Step 1: Pre-screen.
• Step 2: Test task.
• Step 3: Technical interview. 
• Step 4: Reference check.

• Step 5: Job Offer!

   

What we offer: 

• 28 business days of paid off. 
• Flexible hours and the possibility to work remotely. 
• Medical insurance and mental health care. 
• Compensation for courses, trainings.
• English classes and speaking clubs. 
• Internal library, educational events. 
• Outstanding corporate parties, teambuildings.

About the Role

We’re looking for a Senior Motion Designer with strong experience in performance marketing, ideally with a background in Fintech, Trading, Crypto, or similar products.

You’ll work on a mix of performance creatives and more polished branded videos — sometimes following strict brand guidelines and detailed briefs, sometimes moving fast and testing new ideas for paid campaigns.

AI is already a big part of our production workflow, so we’re looking for someone who is comfortable combining traditional motion design with modern AI tools and more advanced prompting.

Your day-to-day:

• Create motion ads for Meta, TikTok, Google, YouTube, and other paid channels
• Produce both performance creatives and branded videos
• Work with motion graphics, editing, stock footage, AI-generated visuals, VO, music, and sound design
• Turn briefs and scripts into strong visual executions
• Create iterations and variations based on performance results
• Research competitors, visual trends, and new creative approaches
• Test new AI tools and workflows that can make production faster or better
• Work closely with Creative Producers, UA managers, and other designers

What we’re looking for:

• 3+ years of professional Motion Design experience
• Strong portfolio with solid animation and editing skills
• Experience creating creatives for performance marketing is a must
• Experience in Fintech, Trading, Crypto, Banking, or similar niches is a strong advantage
• Strong knowledge of After Effects, including its core 3D tools
• Experience with Premiere Pro, Photoshop, and Media Encoder
• Hands-on experience with AI tools such as Higgsfield (Seedance 2.5), Google Flow (Veo 3), Nano Banana, ElevenLabs, ChatGPT, Claude, or similar
• Good prompting skills, including experience with more complex image and video generation
• Strong understanding of composition, animation, typography, pacing, and visual storytelling
• Ability to work both from strict brand guidelines and with limited visual references
• Basic understanding of performance metrics such as CTR, CPA/CPI, Hook Rate, and Hold Rate
• English B1+

Nice to have:

• Experience with Blender, Cinema 4D, or any other 3D software
• Experience combining AI, 3D, and traditional motion design
• Experience with automation or AI-assisted creative workflows

What we offer:

• Part-time / freelance work with a flexible schedule, and the option to go full-time later
• Work with strong digital products across Fintech, mobile apps, Health & Fitness, Education, and Entertainment
• A mix of branded and performance-focused projects
• Access to a wide range of stock, AI, and creative tools
• Freedom to test new tools and production approaches
• Minimal bureaucracy and no unnecessary meetings
• Fully remote work
• Collaboration with experienced Creative and UA teams

Contact us if you're:

• Are proactive, efficient, and highly attentive to detail
• Care about both visual quality and performance
• Enjoy turning briefs, insights, and hypotheses into strong visual executions
• Feel comfortable working with both strict brand guidelines and fast-paced performance creatives
• Are curious about new tools, formats, and production approaches
• Actively experiment with AI in your creative workflow
• Enjoy finding smarter and faster ways to produce great work

Coralsoft is looking for an AI-Native Full-Stack Developer who actively uses AI agents and modern coding tools to build software faster and smarter.

We're looking for someone who treats AI as a core part of their development workflow, not just an occasional assistant. You should be confident using tools like Claude Code, Codex, and Cursor to independently build, debug, and ship production-ready features.

Requirements

• 2+ years of commercial development experience
• Strong hands-on experience with AI coding agents (Claude Code, Codex, Cursor, or similar)
• Ability to effectively prompt, guide, and orchestrate AI agents for complex development tasks
• Experience with AI-assisted development across the full software development lifecycle
• Strong JavaScript and TypeScript knowledge
• Solid experience with React, Next.js, and Node.js
• Experience with REST APIs, PostgreSQL, and third-party integrations
• Ability to review, debug, and validate AI-generated code
• Ability to independently own and deliver features
• English B2+

Main Stack

• AI: Claude Code, Codex, Cursor, AI Agents
• Frontend: TypeScript, React, Next.js, Tailwind CSS, Zustand
• Backend: Node.js, NestJS / Express, PostgreSQL, Prisma, Supabase
• Tools: Git, GitHub, Docker, Vercel

Big Plus

• Experience building custom AI agents and automated workflows
• Experience with MCP servers, agent orchestration, and AI integrations
• Experience with React Native / Expo
• Experience with Python (FastAPI / Django)
• Experience with Flutter / Dart
• Experience with LLM APIs and RAG systems

What We Offer

• $1,600–$2,200/month, full-time
• Fully remote work
• AI-first development environment
• Different projects and domains
• Paid courses and mentorship
• English classes compensation
• 12 paid vacation days + 10 paid sick days
• Unlimited unpaid days off
• 1-month trial period

This role focuses on executing critical migration projects within the backend infrastructure. The Backend Infrastructure team is undertaking several large-scale migrations to modernize its systems, improve reliability, and reduce maintenance overhead. This TVC position will be instrumental in performing the hands-on work required for these migrations, working closely with the infrastructure team and other BackEnd teams.

Required Qualifications:

• Ability to work from our Warsaw office
• 5+ years of hands-on experience in Java programming.
• Strong communication and interpersonal skills, with the ability to collaborate effectively within a technical team environment.
• At least Upper-Intermediate level of both spoken and written English

• Bachelor’s degree in Computer Science, Software Engineering, or a related technical field, or equivalent practical experience.

   

Nice-to-Haves:

• Experience with build tools such as Gradle, Maven, or Bazel.
• Experience with building data pipelines.
• Knowledge of Google Cloud Platform (GCP) services.

Responsibilities

• Execute Migrations: Actively participate in and drive the execution of large-scale code and system migrations across various backend services. Some examples include: 
  • Importing or upgrading third-party dependencies.
  • Building projects on GoB(Gerrit-on-Borg).
  • Performing necessary code and dependency changes in backend projects
• Code Modification and Updates: Update and refactor existing codebases (primarily Java) to align with new libraries, platforms, and infrastructure.
• Testing: Work with the Infrastructure team to create a testing plan for migrations to ensure that changes do not break running services and execute the test plans.  
• Collaboration: Work closely with the  Backend Infrastructure team and other BE software engineers to understand migration requirements, plan execution strategies, and ensure smooth transitions with minimal disruption.
• Problem Solving: Investigate, debug, and resolve technical issues and complexities encountered during the migration processes.
• Documentation: Maintain clear and concise documentation for migration plans, processes, changes made, and outcomes.
• Best Practices: Adhere to software development best practices, ensuring code quality, and follow established guidelines for infrastructure changes.

We offer:

• Opportunity to work on a global product used by 100+ million users worldwide.
• Competitive compensation package, including 20 paid vacation days and paid sick leave.
• Full-time office-based work (5 days per week) in a modern, comfortable office in Warsaw.
• Flexible working hours with a healthy work-life balance.
• Private medical insurance.
• English classes with a native speaker and wellness activities, including online yoga.
• Paid tech training and other activities for professional growth;
• Modern, comfortable office and a friendly, supportive engineering culture.
   
  If your qualifications and experience match the requirements of the position, our recruitment team will reach out to you in a week maximum. Please rest assured that we carefully consider each candidate, but due to the amount of applications, the review and further processing of your candidacy may take some time.

We’re looking for a Senior Back End Engineer to join a B2B SaaS platform powering 1M+ live websites for tens of thousands of businesses worldwide.

The product combines a large-scale distributed architecture with AI-powered tools for content generation, SEO, translations, image descriptions, and automated website updates. You’ll work on core services where performance, concurrency, reliability, and scalability are critical.
 

What you’ll do:

Build and scale core backend services with Java and Spring Boot.

Design distributed microservices and high-performance APIs.

Solve complex multithreading, concurrency, and performance challenges.

Work with relational and NoSQL databases and optimize data models.

Own features end-to-end, from requirements to production.

Use AI-powered development tools to improve engineering productivity.

Influence architecture and infrastructure decisions and mentor other engineers.

What we’re looking for:

5+ years of backend development experience.

Strong Java, Spring, and Spring Boot skills.

Deep understanding of multithreading, concurrency, and performance optimization.

Experience with distributed systems, microservices, and API design.

Strong database and SQL skills.

Experience with unit and integration testing.

Ability to take ownership and work independently in a cross-functional team.

Fluent English.

Nice to have: TypeScript/React, Generative AI development tools, CI/CD, or experience in high-growth B2B SaaS.

Client

Our client is one of the leading reinsurance service providers across the globe. Their technological platform is constantly evolving as they apply new and emerging technologies to their expanding business.

Project overview

The client's technological platform is continuously evolving as they integrate new and emerging technologies to support their growing business. The team manages the applications that are central to the client's core business strategy and provides support for a global user base. Due to the dynamic nature of the client's business, high levels of agility are required, demanding that the team maintain technical excellence.

This project is part of the client's global technology modernization roadmap, aimed at equipping one of their key lines of business with the necessary technology to tackle modern market challenges and opportunities. The development focuses on core business applications using a modern AWS toolset, with Python on the backend. Since the project is in its early stages, much of the work involves architecture design, technology selection, and proof-of-concept (POC) activities.

Position overview

Join a dynamic team to design and develop AWS-enabled solutions using Python.

This position is open for hiring in Dublin, Ireland, and requires working from the office 4 days per week.

Responsibilities

• Design and develop of AWS-enabled solutions using Python as the main programming language
• Ensure newly developed applications have sufficient test coverage with a strong preference towards automated test suites
• Ensure application observability using standard AWS tools and services
• Collaborate with the broader development team on shared architecture, best practices, and development culture
• Provide guidance on the technological and methodological direction of systems in support of business strategies

Requirements

• Extensive experience in Python development
• Detailed knowledge of AWS services in the context of building serverless backend applications that expose secure APIs and utilise parallel computing techniques, messaging and data volume intensive workflows
• Hands-on experience with automated deployment of AWS stack to development and production environments
• Experience in analysis and resolution of typical AWS performance bottlenecks
• Solid Linux and scripting background
• Passion for automation, testing and choosing the best tool for the job
• General problem-solving mentality. The ability to collaborate with different teams on solutions for a variety of different business, code & data-related issues
• Strong communication skills

Nice to have

• Experience with CI/CD workflows supported by GitHub actions
• Experience in developing applications using Serverless framework
• Prior experience in working in the Financial Services/Insurance industry
• Prior experience working in an Agile/Scrum development environment

Client

Our Client is one of the leading reinsurance service providers across the globe. Their technological platform is constantly evolving as they apply new and emerging technologies to their expanding business.

Position overview

This is a hybrid role within the Platform Operations and Engineering Practice. There will be a steady stream of work from focusing on Platform consolidation and hardening across multiple systems. The nature of the work on Engineering team will be focused on the DevOps/DevEx side of the platforms and technologies we use: producing GitHub Actions, implementing reference implementations, pairing with Software Engineers on automating away some of the more manual steps that developers undertake.

The candidate should possess excellent communication (both written and verbal) and collaboration skills and able to effectively prioritize across a number of focus areas. The candidate must be eager to learn about new technologies and platforms as we onboard these.

This position is open for hiring in Dublin, Ireland, and requires working from the office 4 days per week.

Responsibilities

• Automate development processes and streamline CI/CD pipelines using GitHub Actions
• Collaborate with engineering teams to support platform consolidation and system hardening
• Manage and optimize AWS serverless infrastructure
• Monitor application performance with tools like Datadog and Vault
• Troubleshoot and resolve platform issues
• Integrate new technologies into the platform
• Ensure secure coding practices and maintain system compliance

Requirements

• Secure coding practices
• Application performance analysis
• Networking (TCP/IP Layer 5 and higher)
• Strong written and verbal communication
• Excellent troubleshooting abilities
• Experience with AWS CDK
• Strong interpersonal & collaboration skills, with the ability to adapt working styles
• Ability to work autonomously, prioritize tasks, and balance multiple responsibilities
• Skilled in evaluating options and finding optimal solutions for technical and process-related problems, considering various factors and constraints