Senior Back-End Developer

Paris, France
Full time
Office
Compensation is not specified
Role
Backend Engineer
Description

[Blockchain.com] is recognized as a prominent software platform specializing in digital assets globally. Our dedication lies in developing an open, fair, and easily accessible financial landscape through software innovation.

We seek talented Software Engineers with diverse technical backgrounds and a proven history in constructing reliable, high-performing systems. As a Senior Back-End Engineer, you will be pivotal in crafting financial and crypto-native products, services, and APIs. Your role will involve leading technical dialogues, shaping approaches, and driving team progress through promoting top engineering standards.

RESPONSIBILITIES:

  • Design, create, and upkeep scalable back-end services utilizing Kotlin & Java.
  • Develop and enhance APIs for seamless interaction with front-end and external systems.
  • Employ relational and NoSQL databases to effectively manage and process significant data volumes.
  • Establish and maintain CI/CD pipelines to ensure smooth deployment and testing procedures.
  • Collaborate with cross-disciplinary teams to supply secure, quality, and user-focused solutions.
  • Conduct code assessments and mentor junior developers to instill a culture of ongoing improvement.
  • Collaborate closely with design and product teams to ensure seamless integration of user-facing and server-side features.

REQUIREMENTS:

  • Proficiency in Java or Kotlin.
  • Strong knowledge of microservices architecture, API design, and database systems like PostgreSQL and MySQL.
  • Understanding of system design fundamentals and scalable architectures.
  • Familiarity with Docker and CI/CD tools.
  • Experience with event-driven structures (e.g., Kafka, RabbitMQ).
  • Excellent problem-solving abilities, keen attention to detail, and dedication to code excellence.

DESIRABLE SKILLS:

  • Familiarity with cloud platforms such as GCP, AWS, or Azure.
  • Knowledge of blockchain technologies or financial systems.
  • Proficiency in front-end technologies like React.

COMPENSATION & BENEFITS:

  • Competitive full-time salary considering experience, accompanied by substantial equity in a leading firm.
  • Ideal office location in central Paris - mandatory in-office work for 4 days per week.
  • "Work from Anywhere" policy.
  • Opportunity to contribute significantly and shape your career in a rapidly expanding, global tech organization within an emerging industry.
  • Unlimited vacation policy; diligent work entitles you to take time off when needed.
  • Performance-based bonuses in cash.
  • Company-provided Apple equipment.

Blockchain is deeply committed to workplace diversity and inclusion and proudly upholds equal opportunity employment practices. Discrimination based on any characteristic is strictly prohibited. Hiring decisions are solely based on qualifications, merit, and business needs at the time. Legal Data and Hiring Process Disclaimer: For specific information on data retention and HR processes, please contact the Data Protection Officer via the provided email address. Your personal data's lawful usage is for recruitment processes as specified in the GDPR. Data may be processed and shared with Greenhouse Software, Inc., for recruitment purposes in the United States while maintaining compliance under the standard contractual clauses. Your personal data shall be retained for recruitment assessment in line with GDPR provisions. You hold rights concerning your personal data per GDPR regulations, including access, rectification, erasure, restriction, and data portability. Should you have any concerns, contact an EU supervisory authority.

Skills Required
Avatar
Blockchain.com
Company size
Not specified
Location
United States
Description
Not specified

More Full-time Jobs

Show more

Localization Ops & Growth Specialist - Spanish/Russian

Buenos Aires, Argentina +1
Buenos Aires, Argentina +1
Full time
Remote
BingX is a leading cryptocurrency exchange, serving over 20 million users worldwide. Responsibilities: We’re looking for a marketing and PR professional to localize brand strategy, content, and campaigns for a specific language region. Responsibilities include monitoring local market trends, aligning with HQ teams, creating culturally relevant PR content, supporting promotional launches, coordinating local events and logistics, managing client communications, and contributing to SEO, advertising, and workflow optimization. Requirements: experience in localization, marketing, or PR, with a strong understanding of local culture, media, and social platforms. Background in offline event execution and logistics is preferred. Must be skilled in PR writing, campaign optimization, and cross-team coordination. Proactive, detail-oriented, and capable of managing partnerships and business negotiations. Knowledge of the Spanish-speaking Web3 ecosystem is a plus. Fluency in English and Spanish/Russian is required; Chinese is a bonus.
Payment in Crypto
1,000-2,000
Monthly
See details

Growth Business Development (KOL) - Korean/Arabic/Polish/Russian/Portuguese/Spanish

Kazakhstan +6
Kazakhstan +6
Full time
Remote
BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English (Chinese or additional local languages are a plus). Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.
Payment in Crypto

Community Team Members

Part time
Remote
🌍 Join DeepRoots — Community Team Recruitment (25 Seats Only) Remote, Global
DeepRoots is building a global movement in Web3:
From Silence to Voice — Together We Rise.
We’re hiring Community Team Members to help grow our ecosystem. If you’re looking to kickstart your Web3 career, this is your chance.
 
💰 Rewards & Benefits
$150 Micro-Contract (60 days, 2h/day)
Daily Rewards: Top comment, best post, most active
Voice of the Day: Recognition + bonus
Bring-a-Voice Bonus: Earn when new members join through you
Extra Prizes: For leaders who keep the fire alive
 
👊🏻Clear Growth Path:
Community Team Leader (part-time, higher pay)
Community Team Manager (full-time, full salary + benefits)
Moderator Roles (group management)
 
📌 Your Role
❤️ Engage actively: like, comment, share
🌍 Push the march forward — “From Silence to Voice”
⏰ 2h/day → 7:00–9:00 PM Dubai time
📆 6 days per week (Sunday OFF)
🧠 Bring a builder mindset (not hype / pump-dump)
 
✅ Requirements
Stable internet connection
Basic knowledge of Web3
LinkedIn & Twitter (X) account (or willingness to create one)
 
🌱 How to Apply
Send the following details to: connect@deeproots.earth
Full Name
Country
LinkedIn Account
Twitter (X) Account
Confirmation: “Ready to start and apply to sign the agreement and NDA of the project.”
 
🌍 Website: deeproots.earth
⚡ This is not hype. It’s a mission. It’s a movement.
✊ Be one of the 25 voices that help shape the future.
Payment in Crypto
75
Monthly
See details

Crypto Quant Trader

Panama City, Panama
Panama City, Panama
Full time
Hybrid
Responsibilities
As a Quant trader with FORMATNULL you execute proven strategies across Crypto Futures and Spot markets, monitor existing positions across exchanges and research, develop, and refine new cryptocurrency trading strategies. The role will straddle analyzing new trading opportunities, statistical approaches to profit calculation, trade execution, and support in reporting and KPI management.The ideal candidate would bring a deep understanding of cryptocurrency markets, technical and fundamental analysis, have multiple years’ experience trading at an institutional desk, and arrive with one or more tested strategies for rapid deployment. However, to the extent that strategies remain in the late development or testing stages, such candidates with sufficient market experience should certainly apply as well.Salary negotiable with additional perks. You will run a 5 to 7 digits USD trading account and with increasing responsibilty and negotiatable profitshare you will enjoy a comfortable income. The position is designed to be predominantly remote, with flexibility for in-person collaboration when needed.
Requirements
Extremely strong quantitative and analytical backgroundRelevant experience in statistical modeling3+ years’ industry experience developing and evaluating trading strategies in liquid marketsProficiency in major asset fundamentals and of major blockchain projects and conceptsExperience investing or trading in cryptocurrency marketsDeep understanding of derivative instrumentsUnderstanding of market-making spot and futures on centralized order booksThe following skills would be very helpful, and would help a candidate grow the role going forward:Knowledge of Bitget exchangeKnowledge Google SheetsAdvanced skills in Excel, Google Sheets, SPSS, and statistical tools.Fluency in German, French or Spanish, beyond English as a core necessity.Flexible availability in CET and EST time zones.
5,000-20,833
Monthly
See details

Global Business Development Manager (KOL Partnerships) - LATAM, CIS, EMEA, MENA

Argentina +7
Argentina +7
Full time
Remote
BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English (Chinese or additional local languages are a plus). Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.
Payment in Crypto