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Are you a talented Senior Data Engineer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.

What we offer:

• The rate depends on your skills and experience. We've already paid out over $11M to our engineers.
• No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
• We'll manually find the best project for you according to your skills and preferences.
• Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
• We respect your seniority so you can expect no micromanagement or screen trackers.
• Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
• We will support you from the time you submit the application throughout all cooperation stages.
• Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
• Through our community, we will connect you with the best developers from more than 75 countries.

We have several different roles for Data Engineers — please check the details if you're interested.

Requirements — Data Engineers:

• 5+ years of commercial experience as a Data Engineer
• 2+ years of commercial experience with Azure DevOps is a must
• 2+ years of commercial experience with Databricks
• 2+ years of experience with DBT is required
• Experience with Airflow is a plus

Requirements — Data Engineers:

• 4+ years of commercial experience as a Data Engineer
• 3+ years of experience with Apache Airflow and 2+ years of experience with Snowflake
• 3+ years of experience with Python and 1+ year with SQL
• Experience with AWS/GCP/Microsoft Azure/Snowflake is a must

• Strong technical skills: as a Senior Data Engineer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
• Strong self-organizational skills — ability to work full-time remotely with no supervision.
• Reliability — we want to trust you and expect that you won’t let us and the client down.
• Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.

Sounds good for you? Apply now and join the Lemon.io community!

NOT YOUR TECH STACK?

We have a variety of projects, so if you have 4+ years of commercial software development experience and are proficient in AI Agent Architecture, AI Automation Architecture, AI Engineering, Site Reliability Engineering, Platform Engineering, React & Python, React & Golang, Golang, React & Java, React & Ruby, Ruby, PHP & Vue, Vue & Node.js, React & .NET, Android & iOS, iOS & Swift, Flutter & Dart, Blockchain (Ethereum/Ethers.js/Wagmi/Viem/Solana), Angular & Node.js, Vue & .NET, Python & Vue, DevOps, MLOps, Data Science, Angular & PHP, Angular & .NET, Symfony & React, Symfony & Vue, Symfony & Angular, Python, Symfony & JavaScript & Next.js & TypeScript, Data Analysis, React & PHP,  Project Management, Product Management, QA Automation, QA Manual, Embedded Software Engineering, React Native & Node, React Native & React, React Native & Ruby, React Native & Python, WordPress, Android, Data Annotation, Angular, Python & Node, React & Node.js, Java & Spring, Svelte & Python, Svelte & Node.js, Svelte & TypeScript, Rust, Shopify & JavaScript, Vue & Nuxt, PHP & Laravel, UI/UX Design, Animation, Graphic Design, React & Node & React Native, .NET & C#, Electron, Scala, C++, Unreal Engine & C++, Python & LLM, Unity, or Machine Learning Engineering, we would be happy to connect with you and match you with a project that fits your experience.

We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.

We work with developers from 75+ countries across Europe, Latin America, North America (the U.S. and Canada), selected countries in Asia (Japan, Singapore, South Korea, the Philippines, Indonesia, Malaysia, Vietnam, Thailand, and Israel), Oceania (Australia, New Zealand, and Papua New Guinea), and Africa (including Morocco and South Africa).

Please mention the word GENIUS and tag RMTU3LjI0NS4yNDcuMTE4 when applying to show you read the job post completely (#RMTU3LjI0NS4yNDcuMTE4). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.

What we offer:

• The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.
• No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
• We'll manually find the best project for you according to your skills and preferences.
• Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
• We respect your seniority so you can expect no micromanagement or screen trackers.
• Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
• We will support you from the time you submit the application throughout all cooperation stages.
• Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
• Through our community, we will connect you with the best developers from more than 75 countries.

We have several open positions for Full-Stack React.js Developers - please see the details below. We also have some backend positions; the full list is included below as well.

Requirements for the Senior React & Python Position:

• 4+ years of software development experience.

Commercial experience:

• React.js 3+ years & Python 3+ years
  OR
  React.js 2+ years & Python 5+ years
  OR
  React.js 5+ years & Python 2+ years

• Experience with AWS, GCP, or Azure is required.

Requirements for the Senior Ruby & React Position:

• 5+ years of software development experience
• React.js 2+ years and Ruby/Ruby on Rails 5+ years
  OR
  React.js 5+ years and Ruby/Ruby on Rails 2+ years
• Experience with AWS, GCP, or Azure is required.

Requirements for the Senior Node & React Position:

• 5+ years of software development experience

Commercial experience:

• React.js: 3+ years, Node.js: 5+ years, and Next.js: 2+ years
  OR
  React.js: 5+ years, Node.js: 3+ years, and Next.js: 2+ years
• Expertise in AWS, TypeScript and AI-assisted coding is a must.

Other requirements:

• Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
• Strong self-organizational skills — ability to work full-time remotely with no supervision.
• Reliability — we want to trust you and expect that you won’t let us and the client down.
• Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.

Sounds good for you? Apply now and join the Lemon.io community!

NOT YOUR TECH STACK?

We have a variety of projects, so if you have 4+ years of commercial software development experience and are proficient in AI Agent Architecture, AI Automation Architecture, AI Engineering, Site Reliability Engineering, Platform Engineering, React & Golang, Golang, React & Java, Ruby, PHP & Vue, Vue & Node.js, React & .NET, Android & iOS, iOS & Swift, Flutter & Dart, Blockchain (Ethereum/Ethers.js/Wagmi/Viem/Solana), Angular & Node.js, Vue & .NET, Python & Vue, DevOps, MLOps, Data Science, Angular & PHP, Angular & .NET, Symfony & React, Symfony & Vue, Symfony & Angular, Python, Symfony & JavaScript & Next.js & TypeScript, Data Analysis, React & PHP, Data Engineering, Project Management, Product Management, QA Automation, QA Manual, Embedded Software Engineering, React Native & Node, React Native & React, React Native & Ruby, React Native & Python, WordPress, Android, Data Annotation, Angular, Python & Node, Java & Spring, Svelte & Python, Svelte & Node.js, Svelte & TypeScript, Rust, Shopify & JavaScript, Vue & Nuxt, PHP & Laravel, UI/UX Design, Animation, Graphic Design, React & Node & React Native, .NET & C#, Electron, Scala, C++, Unreal Engine & C++, Python & LLM, Unity, or Machine Learning Engineering, we would be happy to connect with you and match you with a project that fits your experience.

We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.

We work with developers from 75+ countries across Europe, Latin America, North America (the U.S. and Canada), selected countries in Asia (Japan, Singapore, South Korea, the Philippines, Indonesia, Malaysia, Vietnam, Thailand, and Israel), Oceania (Australia, New Zealand, and Papua New Guinea), and Africa (including Morocco and South Africa).

Please mention the word PLEASURE and tag RMTU3LjI0NS4yNDcuMTE4 when applying to show you read the job post completely (#RMTU3LjI0NS4yNDcuMTE4). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.

We're building a network of LLM Engineers who can design, build, and integrate practical AI features into existing products. We're looking for people to collaborate with on a freelance basis - part-time or full-time, depending on project needs.

This role is focused on delivery, not ML research. What matters most is your engineering foundation and your ability to integrate AI into real production systems using Python, Node.js, or Ruby codebases.

Requirements

What we're looking for

• Strong software engineering background - Python, Node.js, or Ruby
• Hands-on experience integrating LLM APIs into production systems (OpenAI, Anthropic, or similar)
• Ability to design pragmatic AI solutions within existing architectures
• Experience building RAG pipelines, embeddings, and vector search
• Understanding of cost, latency, and reliability constraints of AI systems
• Ability to work independently with clients and set realistic expectations
• Background in big data or data pipelines is a big plus
• English B2/C1
• Availability part-time or full-time (B2B contract)
  
  

What You'll Do

• Add AI functionality into existing Python, Node.js, and Ruby codebases
• Build LLM-powered features: chat, summaries, classification, smart search, document Q&A
• Design lightweight RAG pipelines using embeddings and vector search
• Work with vector DBs (pgvector, Pinecone, Qdrant)
• Implement safe, reliable LLM endpoints (OpenAI, Anthropic, Azure)
• Work directly with clients to shape AI features and reduce manual effort
• Advise clients when NOT to use AI and navigate trade-offs around latency, accuracy, and cost
  
  

What do we mean by freelance?

• Read more at Monterail Tech Network

Please mention the word WINNERS and tag RMTU3LjI0NS4yNDcuMTE4 when applying to show you read the job post completely (#RMTU3LjI0NS4yNDcuMTE4). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.

Tremendous is the global platform built for businesses to send payouts—gift cards and money—to anyone, anywhere, instantly. We're trusted by 20,000+ organizations, from startups to giants like Atlassian, MIT, and United Way, to reach millions of recipients worldwide.

We're profitable and growing without outside investors. We're fully remote, with a high-documentation, low-meeting culture that leaves more time for the work that matters—and for your life outside it. Our employee NPS sits in the high 80s.

We move billions of dollars through our systems. That makes security existential, and it's why we're making our first dedicated security hire.

About The Role

You'll be our first Head of Security. There's already a real foundation here—bug bounty, pen tests, automated code and configuration scanning on the production and code side, phishing simulations on the people side. You’ll add to it across access and identity, SecOps and monitoring, incident response, vendor security, employee security practices, and policy. You'll own the whole posture.

This is a player-coach role. Early on, you'll do the scoping and the hands-on work yourself; this is not a role where you direct from above. As the work demands it, we're fully prepared to build a team here—and we're looking to you to define what that team should be and when.

You'll report to the VP of Engineering, Tremendous' most senior technical leader. We've deliberately placed security with Engineering so you're set up to drive real implementation fast—embedded with the people whose work you're securing, not siloed in a compliance function. As the security function matures, we'll revisit this.

What You'll Do

• Own Tremendous' security posture end-to-end, partnering with our engineering team on production infrastructure and code security.
• Assess where we have gaps, prioritize them, and tackle our highest-leverage gaps first. We’ll have opinions, but you own the prioritization and implementation.
• Treat incident response as core, not afterthought. We may not be able to prevent a breach, but your job is making sure it's small, contained, and that we know exactly what to do.
• Drive security as a cultural shift across the company—introducing controls incrementally, working with teams rather than over them. "Yes, and," not "no."
• Lead our AI-security posture. We invest heavily in AI tooling; your job is to manage that risk and enable it, not to ban it.
• Define when and how to staff up the security function, and hire your own team.
  
  

What You'll Bring

• Real, hands-on security experience at a company that scaled—ideally as an early security hire who grew with the business through high growth.
• Deep experience in at least one core security domain—product/production security, security operations, or access/identity and policy—with enough range to reason across the others. You defined the security posture, not just executed someone else’s playbook.
• An engineer's mindset. You reach for code to solve problems and can read our codebase and understand our infrastructure (Ruby on Rails; TypeScript + React; PostgreSQL; Google Cloud). You won't write much day-to-day, but you're not lost in the code.
• Judgment over checklists. You can explain the actual risk of a given decision, hold a firm line where it matters, and give ground where "best practice" doesn't apply to us or real business need pulls the other way. You can hold your own in a debate about whether to open up broad data access for AI tooling.
• Bedside manner. You drive hard change by bringing the team around to your point of view, rather than just telling them no. Engineers and the rest of the company want to work with you.
• Experience building or co-building a small security team is a plus.
• Fintech, payments, or regulated-industry experience is a plus.
  
  

What's Cool About The Role

• You define the function. First security leader, with the budget for the required tools and team.
• A real mandate. The push for this hire comes straight from the founders.
• We invest in your tools. Everyone has a $5k/month budget for AI tools. Use it.
• Competitive pay and equity. Base salary $250,000–$330,000, plus meaningful equity.
• Fully remote. Work from anywhere in the Americas.
• Great culture. Read more about how we work in our public handbook.
  
  

Compensation Range: $250K - $330K



Please mention the word GOLDEN and tag RMTU3LjI0NS4yNDcuMTE4 when applying to show you read the job post completely (#RMTU3LjI0NS4yNDcuMTE4). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.

Role Summary

The Costing Engineer – Jigs & Fixtures is responsible for the end-to-end financial estimation of specialized tooling required for electronic assembly lines. This role involves analyzing technical drawings, calculating manufacturing costs for custom parts, and budgeting for complex automation components. The goal is to provide accurate "Should-Cost" models that ensure high-quality assembly solutions are delivered within budget.

Core Responsibilities

• Component & Material Estimation
• Fabricated Parts: Calculate costs for metallic (Al, SS) and non-metallic (ESD plastics, Delrin) parts by evaluating material weight, machining cycles (CNC/VMC), and finishing processes.
• Bought-Out Items: Source and maintain price benchmarks for:
• Mechanical: Bearings, linear rails, and precision slide ways.
• Pneumatics: Cylinders, DCV valves, and manifold systems.
• Automation: PLCs, sensors (proximity/optical), magnets, and HMI units.
• Electrical: Push buttons, switches, wiring harnesses, and connectors.
• Assembly & Validation Costing
• Estimate man-hours for mechanical assembly, pneumatic plumbing, and electrical wiring.
• Factor in costs for fixture testing, calibration, and $Cpk/Ppk$ validation runs.
• Strategic Financial Analysis
• Conduct Make vs. Buy analyses for custom fixture components.
• Perform Value Engineering (VA/VE) to suggest lower-cost alternatives for non-critical parts without sacrificing precision or safety.
• Maintain a live database of vendor quotes and historical cost data.
  

Technical Requirements

• Education: B.E./B.Tech in Mechanical, Mechatronics, or Production Engineering.
• Experience: 3–5 years in costing, specifically within high-precision tooling or electronics assembly.
• Software Proficiency: * Advanced MS Excel (Macro/Pivot tables) and ERP systems (SAP/Oracle).
• Ability to view and measure parts using CAD software (SolidWorks/AutoCAD).
• Process Knowledge: Deep understanding of milling, turning, grinding, and surface treatments.
  

KEY PERFORMANCE INDICATORS (KPIs)

• Estimation Accuracy: Variance between estimated cost and actual procurement cost.
• Turnaround Time: Speed of providing quotes for new assembly line projects.
• Cost Savings: Success in identifying 5-10 %$ annual savings through Value Engineering.
  
  

BEHAVIORAL COMPETENCIES

• High attention to detail (zero-error mindset).
• Strong negotiation skills for dealing with external vendors.
• Ability to collaborate effectively between Design, Procurement, and Finance teams.

Please mention the word ENERGIZE and tag RMTU3LjI0NS4yNDcuMTE4 when applying to show you read the job post completely (#RMTU3LjI0NS4yNDcuMTE4). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.