Skip to content
CV Rocket
Get started
How it worksThe enginePricingBlogContactSign in

Open nowPosted 3 days ago

Software Engineer

Xsolla188 open roles

Where
Russia
Work mode
Remote
Get the CV for this job

From $25 per CV, paid once. No subscription.

Your applicationOpen nowSoftware EngineerXsolla · Russia

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Xsolla's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

11.8% of postings close within 7 days. Measured by our own scanner across the market. Xsolla postings stay open a median of 40 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.8%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: posted 3 days ago

Xsolla median: 40 days open

The posting

ABOUT XSOLLA

Xsolla is a global video game commerce company headquartered in Los Angeles. It helps developers from indie to AAA fund, distribute, market and monetize their games, and acts as merchant of record for 1,500+ developers worldwide. For more information, visit xsolla.com.

The role

  • smart wallets built on account abstraction;
  • SDKs that game studios and partners use to bring players on-chain;
  • infrastructure backend services for tokenizing in-game items and currencies;
  • ecosystem dApps: a DEX, an NFT marketplace and an auction.
  • Features end to end: backend, frontend and production
  • The on-chain / off-chain architecture of your product: what lives in contracts, what lives in services, and how the two stay consistent. You make these decisions and justify them in writing
  • Security and correctness of what you ship: signing flows, interactions with contracts that hold user assets, keys and secrets
  • Production operation of your services, as part of the team's on-call rotation
  • Build backend services in Go and TypeScript: chain indexing, transaction relaying, event processing, APIs for dApps and SDKs
  • Build infrastructure backend services for tokenizing in-game items and currencies
  • Build dApp frontends in React: wallet connection, transaction signing, on-chain state in the UI
  • Integrate smart wallets into products: accounts, paymasters, bundlers
  • Develop SDKs used by game studios and partners
  • Monitor services and contracts in production and take part in on-call
  • Review code
  • Set up and maintain AI tooling in the repositories (Claude Code, Codex, Cursor: rules, context, harness) so the team uses it effectively

Required

  • 5+ years of commercial software development, with senior-level production experience across backend and frontend
  • dApps that you shipped to production and maintained
  • viem and wagmi in production: clients and transports, contract reads and writes with typed ABIs, event subscriptions, wagmi hooks and connectors, caching and invalidation of on-chain state
  • How wallet signers work: EOAs, browser and embedded wallets, smart accounts; personal_sign (EIP-191) and typed data (EIP-712); the EIP-1193 provider; network switching
  • Hands-on experience with smart wallets: UserOperations, gas sponsored via paymasters, signature validation for contract accounts (ERC-1271)
  • Go and TypeScript (Node.js) for production services
  • Processing on-chain events: idempotency, reorg handling, retries
  • Asynchronous messaging and event-driven design (Kafka, RabbitMQ or NATS): delivery guarantees, ordering, reprocessing
  • Relational databases (PostgreSQL) and caching (Redis)
  • Designing REST and gRPC APIs: versioning, backward compatibility
  • React and TypeScript: rendering model, state management, performance
  • Web security fundamentals: XSS, CSRF, CSP, safe handling of signatures and keys in the browser
  • Reading and understanding Solidity contracts and the EVM (storage, gas, call semantics, proxy upgrade patterns, access control) well enough to integrate with them safely and review changes
  • Common contract vulnerability classes (reentrancy, front-running / MEV, oracle manipulation, signature replay) and how they affect the off-chain side
  • Containers and orchestration (Docker, Kubernetes) at the level of deploying and debugging your own services
  • Observability (we use Datadog; experience with Prometheus, Grafana, ELK / Graylog or OpenTelemetry also counts): metrics, logs, tracing and alerting for services and contracts; diagnosing incidents in production
  • Testing: unit, integration, E2E
  • Git, CI/CD (GitLab CI or similar)
  • Daily hands-on use of AI coding tools (Claude Code, Codex, Cursor) for development and review, including configuring them for a repository
  • Spoken English at B2 level or higher

Nice to have

  • zkSync / ZK Stack and the specifics of the zk-rollup stack
  • Designing, writing and testing smart contracts in Solidity with Foundry; deploying and upgrading them safely
  • Building ERC-4337 infrastructure yourself (bundlers, paymasters); EIP-6963, EIP-5792
  • DeFi: DEX and AMM mechanics
  • NFTs and marketplaces: ERC-721, ERC-1155, auction mechanics
  • L2 infrastructure: running nodes, indexers, bridges
  • Designing SDKs for external developers
  • Gaming domain experience

HOW WE WORK

  • Decisions in writing. Significant technical decisions are written up as an RFC or ADR that lays out the options and trade-offs. We discuss the document, not a blank whiteboard.
  • AI is part of everyday engineering. We use AI coding tools for development and review, and we treat configuring them for a codebase as real engineering work.

HOW WE HIRE

  1. Intro call. Your background, your motivation and the role.
  2. Technical interview. Built directly on the What you will own and Required sections above. We won't ask about anything this posting doesn't promise.
  3. Bar raiser. An engineer from outside the hiring team checks that you raise the overall engineering bar.

THE TEAM

You will work alongside product managers, designers, smart contract, backend and frontend engineers, QA and DevOps.

BENEFITS

We are passionate about fostering a supportive environment for our team, so we prioritize the physical, mental, and emotional well-being of our employees and their families through a comprehensive Benefits Program. This includes medical, dental, and vision, PTO, and a personalized career roadmap for each employee. By investing in professional development through training and educational opportunities, we ensure that our team thrives both personally and professionally. Together, we're not just building a business; we're cultivating a community that values creativity, collaboration, and the transformative power of play.

EMPLOYMENT DETAILS

  • Location: Remote
  • Employment Type: Full-time
  • Schedule: 10:00–19:00 (flexible)
  • Contract: Employment agreement (entity or EOR arranged per candidate location)

EQUAL EMPLOYMENT STATEMENT

Xsolla is dedicated to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, language, sexual orientation, national origin, genetics, political beliefs, disability, age, marital status, social background or other characteristics.

We are committed to compliance with all fair employment practices regarding citizenship and immigration status.

CONTACT

If you have questions regarding our hiring practices, please contact [email protected]. For more vacancies, visit xsolla.com/careers.

From $25, paid onceGet the CV for this job

What happens when you press

One press. We do the rest.

  1. A CV for this posting

    Written against Xsolla's own wording, from every piece of relevant proof in your profile.

  2. 25 readers review it

    Recruiter, hiring manager, skeptic and more read every draft, round after round. You get the best round.

    The review screen in CV Rocket: how each CV was read, round by round.

  3. We apply on Xsolla's form

    Our application engine gets through the hardest forms there are. Where a question needs you, AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

    An application in CV Rocket: every answer filled in on the employer's form.

  4. Every reply, sorted

    Xsolla's answer lands in your private mailbox, and we classify it on arrival: interview, question, rejection.

    The CV Rocket inbox: each employer reply classified as an interview, an action or a rejection.

  5. Reply with AI

    AI helps you write the email, checks it and sends it. We show you whether the recruiter read it.

  6. The interview in your calendar

    Full integration with your calendar. The invitation goes straight in.

    An interview invitation in the CV Rocket inbox, added to the candidate's calendar.
Get the CV for this job

From $25 per CV, paid once. No subscription.

Why it works

3×

more interviews than doing it yourself with ChatGPT.

ChatGPT writes a CV and never learns what happened to it. We see every reply. For each CV we know:

  • How it was written, and how the review scored it
  • When we applied, and how long after the posting went up
  • Which posting, which company, which city
  • Who got the interview, and who heard nothing

That is how we know which CVs get called.

Get the CV for this job

From $25 per CV, paid once. No subscription.

The numbers game

More applications. More interviews.

Every application goes out with its own CV, written for that posting and paid once. Send enough of them and the law of large numbers finds you the job.

Get the CV for this job
By hand5–10
With CV Rocket100
applications a day

Nearby

Live postings like this one

Same employer first, then the same role elsewhere.

Before you press

Straight answers

Get the CV for this job

From $25 per CV, paid once. No subscription.

What if my background isn't good enough?

We make the most of the background you have. The CV uses every piece of relevant proof your profile holds, and one of the 25 readers reads your whole profile and flags what the CV left out.

Do you really apply for me?

Yes, on the employer's own form, the hardest ones included. Where a question needs you, you answer it right there and AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

Is it a subscription?

No. You pay once per CV, from $25. Every application goes out with its own CV, written for that posting.

One job. One CV.
Paid once.

Pick the posting you want. We write for it, apply for you and catch the reply.

Get the CV for this job

From $25 per CV, paid once. No subscription.