Trenches / Web3 Frontend Developer

Jobgether SRL; Portugal; On-site; EUR 50,000 - 70,000; Full time

Benefits offered by this job

Fully remote

Stock options

Unlimited PTO

Health insurance

Job summary

Lever, Inc. in Portugal seeks a Trenches / Web3 Frontend Developer to own the frontend client for a fast-moving on-chain trading terminal across Solana and EVM. You will bring ideas to production for real trades and real money, from concept through deployment and optimization.

You’ll work in a small, autonomous team in a remote-first, AI-enabled environment, focusing on latency, execution quality, and user experience, with measurable impact on performance and revenue surfaces.

Qualifications

• 3+ years of frontend engineering experience with Web3 or on-chain products.
• Experience shipping products used by real users with real money.
• Hands-on production experience in Solana and EVM ecosystems.
• Familiarity with on-chain trading mechanics like fills and slippage.
• Strong frontend skills for real-time, latency-sensitive apps (WebSockets, RPC streams).
• Experience with charting, order flow, PnL, and on-chain errors.
• Experience with Solana wallet adapters or embedded wallet solutions.

Responsibilities

• Own the frontend client experience for trenches trading across Solana and EVM.
• Own end-to-end revenue-generating product surface from ideation to deployment and optimization.
• Build latency-sensitive trading experiences with live data and responsive UI.
• Unify Solana and EVM wallet/signing experiences with feature parity.
• Optimize browser/frontend performance with WebSockets, RPC streams, and backpressure management.
• Own frontend performance outcomes (p95 TTI and ttf).
• Design trading interfaces covering charting, PnL, fills, and transaction states.
• Maintain production quality and reduce defect rates across surfaces.
• Collaborate with frontend, UX, backend, and DevOps teams; apply AI-native development practices.

Skills

Web3 frontend

Solana

EVM

Real-time apps

Trading interfaces

Performance optimization

AI-enabled development

Remote collaboration

Cross-platform delivery

Frontend ownership

Tools

Solana wallet adapters

Privy

WebSockets

RPC streams

Job description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Trenches / Web3 Frontend Developer based in Portugal.

This is a high-ownership frontend engineering role focused on building the client experience for a fast-moving onchain trading terminal.
You will own critical trading surfaces across both Solana and EVM, working directly on products used for real transactions and real money.
The role combines advanced frontend engineering with deep Web3, trading, wallet, and real-time application expertise.
You will take features from product idea through implementation, production release, measurement, and continuous improvement.
You'll work in a small, highly autonomous team where technical judgment, speed, and product instincts matter.
The environment is remote-first, AI-native, and designed for engineers who thrive with significant ownership and limited bureaucracy.
Your work will directly influence trading performance, execution quality, user experience, and revenue-generating product surfaces.

Accountabilities

• Own the frontend client experience for trenches trading, perpetuals, and prediction markets across Solana and EVM.

• Take end-to-end ownership of at least one revenue-generating product surface, from identifying opportunities and proposing solutions through development, production deployment, and optimization.

• Build and improve latency-sensitive trading experiences, including live data, execution quality UX, snipe controls, order flow, transaction states, and responsive interactions.

• Bring the trenches terminal to competitive parity or beyond with leading onchain trading products, focusing on the interactions that directly influence execution and fills.

• Unify Solana and EVM wallet, signing, approval, and transaction experiences into a coherent user interface while maintaining feature parity across supported platforms.

• Optimize browser and frontend performance using technologies and patterns such as WebSockets, RPC streams, optimistic UI, reconnection strategies, and backpressure management.

• Own measurable frontend performance outcomes, including p95 time-to-interactive and time-to-fill.

• Design and maintain trading interfaces covering charting, PnL, fills, transaction states, and onchain failure handling.

• Own production quality for the surfaces you deliver, reducing defect rates and preventing recurring incidents.

• Use strong product judgment to determine what should be built, particularly where latency, execution quality, and trader experience are critical.

• Work closely with frontend, UX, backend, and DevOps colleagues in a compact, cross-functional engineering environment.

• Use AI-native development practices to accelerate delivery while maintaining rigorous technical review and accountability for production quality.

Requirements

• 3+ years of relevant frontend engineering experience, with demonstrated ownership of production-grade Web3 or onchain products.

• Proven experience shipping products involving real users and real money, such as perpetuals, decentralized exchanges, launchpads, prediction markets, or trading terminals.

• Hands-on production experience with both Solana and EVM ecosystems; experience with only one ecosystem is not sufficient.

• Genuine familiarity with onchain trading and its mechanics, including fills, slippage, priority fees, execution quality, and transaction behavior.

• Strong frontend engineering expertise in real-time and latency-sensitive applications, including WebSockets, RPC streams, optimistic interfaces, reconnection, and backpressure.

• Experience building sophisticated trading interfaces involving charting, order flow, PnL, fills, transaction states, and onchain error handling.

• Experience with Solana wallet adapters and embedded wallet solutions such as Privy or comparable technologies.

• Ability to understand and diagnose frontend performance issues at a systems level rather than relying solely on established recipes or patterns.

• Demonstrated product ownership and initiative, including proposing, building, and launching features without requiring detailed specifications or assigned tickets.

• Experience with mobile or cross-platform delivery is valuable, particularly maintaining feature parity across web and mobile applications.

• Strong understanding of modern frontend development practices and the ability to deliver reliable production software in a fast-paced environment.

• Demonstrated ability to use AI tools as a genuine part of the engineering workflow, including knowing what to delegate to AI and how to review and validate its output.

• Strong self-management, communication, prioritization, and problem-solving skills.

• Comfortable working remotely with reasonable overlap across global time zones.

• Passion for crypto, Web3, trading products, and building practical experiences for active users is strongly valued.

Benefits

• Fully remote, remote-first working environment.

• Individual-contributor role with significant autonomy, ownership, and direct exposure to product decisions.

• Opportunity to work on high-impact Web3 products involving real-time trading and onchain transactions.

• Unlimited paid time off through a flexible paid-time-off program.

• Employee stock option program.

• Zero trading fees through the platform's application.

• Four months of extended family leave for birthing, non-birthing, and adopting parents.

• Premium health, dental, and life insurance in applicable countries.

• Paid volunteering days.

• Opportunity for rapid professional growth in a fast-moving crypto and technology environment.

• Close collaboration with a small, highly technical team and direct access to senior product and engineering leadership.

We appreciate your interest and wish you the best!