Technical Support Engineer - Alternative Payment Methods
About the job
- Deep, hands-on understanding of payment processing workflows, particularly alternative payment method models and related regional payment regulations.
- Proven experience with REST APIs, webhooks, JSON, and authentication protocols.
- Proficiency with enterprise-grade monitoring and logging systems, including Datadog, Grafana, Kibana, ELK Stack, and Splunk.
- Strong proficiency in SQL for complex transactional data analysis.
- Ability to read and debug code snippets in Python, Node.js, or Java.
- Four to seven or more years of experience in a senior technical support, payments engineering, or integration engineering role.
- Experience supporting global payment methods and managing high-traffic systems.
- Strong problem-solving, analytical, and critical-thinking abilities.
- Strong written and verbal communication skills to explain complex technical concepts to technical and non-technical audiences.
- Ability to remain calm and effective while managing critical incidents under pressure.
- High sense of ownership, bias for action, and commitment to operational improvements.
- Serve as the highest escalation point for critical alternative payment method issues across production and sandbox environments.
- Troubleshoot complex transaction failures, including authorization declines, settlement discrepancies, callback issues, and routing problems.
- Analyze logs and monitoring data using Kibana, Datadog, Grafana, and Splunk to diagnose system anomalies and errors.
- Coordinate incident resolution with Engineering and DevOps to mitigate issues and prevent recurrence.
- Lead emergency response protocols during major outages affecting alternative payment method transaction flows.
- Conduct post-incident root cause analyses and present findings to Product and Engineering teams.
- Develop, maintain, and optimize alternative payment method monitoring dashboards, alerts, and system health checks.
- Analyze success rates, latency, and drop-off rates to identify and propose systemic improvements.
- Proactively detect merchant- or provider-level processing issues before they escalate into incidents.
- Provide technical consultation to merchants integrating alternative payment methods such as Pix, Sofort, iDeal, Klarna, and local wallets.
- Review and validate API specifications, payload structures, webhook configurations, and authentication mechanisms.
- Assist with integration test scenarios and required alternative payment method certification processes.
- Propose and drive automation, tooling, configuration, and product enhancements to reduce recurring incidents and operational friction.
- Create and maintain runbooks, troubleshooting guides, and standard operating procedures.
- Promote operational excellence through standardization and knowledge sharing.
- Serve as the technical alternative payment method subject matter expert for Product Managers, Engineering, Compliance, and Partner Management teams.
- Provide support insights that inform product backlog prioritization and roadmap decisions.
- Explain alternative payment method technical constraints, regional nuances, and compliance requirements to internal stakeholders.
- Act as the primary technical point of contact with alternative payment method providers and acquirers.
- Manage and escalate persistent technical issues with providers while ensuring adherence to partner service-level agreements.
- Validate the impact of provider updates, maintenance schedules, and API changes on merchants.
- Reduce mean time to resolution for alternative payment method incidents.
- Achieve high service-level resolution rates for merchant and internal support tickets.
- Improve alternative payment method transaction success rates and system reliability.
- Contribute to cross-team collaboration and knowledge sharing, and support positive merchant satisfaction scores.
- Familiarity with microservices architecture, cloud environments such as AWS or GCP, and CI/CD pipelines.
- Curiosity about emerging AI technologies and an AI-driven mindset.
- Hands-on experience using AI tools, such as large language models, automation frameworks, or AI-assisted development tools, to improve productivity or system performance.
- Prior experience within a high-volume payment service provider, fintech, or banking environment is strongly preferred.
About the company
Unlimit provides borderless payment services for businesses, helping them operate locally and globally. It runs a large, self-built payment infrastructure that supports accepting payments, sending payments, and managing corporate funds. Companies can issue cards, access alternative payment methods, and handle international transfers through a single platform. The product works as a payment infrastructure-as-a-service: businesses integrate Unlimit’s platform to process payments, issue and manage cards, and settle funds across multiple regions. What sets Unlimit apart is its extensive geographic coverage and wide array of local payment options, enabling companies to enter new markets with ease. Its goal is to support innovative businesses by moving beyond traditional banking, providing a scalable, global financial backend for growth.
Company Size
201-500
Company Stage
N/A
Total Funding
N/A
Headquarters
London, United Kingdom
Founded
2009
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Simplify's Take
What believers are saying
- September 17, 2026, Polygon integration positions Unlimit inside the fastest-growing stablecoin payments narrative.
- September 3, 2026, Hopscotch adopted Unlimit for UPI and cards during peak checkout loads.
- May 7, 2026, Decentro partnership opens Indian cross-border merchants across Europe, LATAM, Southeast Asia, and Africa.
What critics are saying
- September 15, 2026, Unlimit Group A/S filed reconstruction for Haslev1409, after failed bank talks.
- Tracxn on September 17, 2026, still lists Unlimit as unfunded, limiting M&A and burn buffers.
- Stablecoin off-ramps face MiCA, banking, and custody scrutiny; one enforcement action can freeze Stable.com.
What makes Unlimit unique
- September 17, 2026, Stable.com lets Polygon users send USDT or PYUSD directly to bank accounts.
- Unlimit covers 180 countries and 150 currencies, giving merchants unusually broad local-rail reach.
- July 24, 2026, Xiaomi GetApps deepened Unlimit's gaming distribution-plus-payments bundle.
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Benefits
Hybrid Work Options
Paid Vacation
Company News
Gr4vy partners with Unlimit to expand global payment options for merchants. News - October 8, 2026 The partnership gives Gr4vy access to Unlimit's acquiring and payment-method capabilities, supporting local acceptance and settlement across international markets San Mateo, 8 October 2026 - Gr4vy, the cloud-based payment orchestration platform, and Unlimit, a global financial infrastructure company, today announced a new integration now available to Gr4vy merchants globally. The partnership enables merchants to add Unlimit's global payment methods, including local options across different countries, and access its financial infrastructure as they expand internationally. Through Gr4vy's orchestration platform, companies can connect to Unlimit's network and processing services, gaining access to cards, real-time payments, digital wallets and cash-based methods across key markets worldwide. These options can be offered directly through the enterprise checkout via a single integration. For Unlimit, the alliance creates an additional route to businesses and payment platforms using Gr4vy to manage providers across multiple markets, while giving merchants greater agility as they grow. "Merchants expanding into new regions need the flexibility to add the right acquiring partners and payment options without rebuilding their financial stack," said John Lunn, Founder and CEO of Gr4vy. "Partnering with Unlimit gives our customers greater flexibility to adapt their business strategy to local needs while accessing a broad portfolio of ways to pay across different countries." Payment preferences and requirements vary widely between markets, from cards and digital wallets to real-time and local payment methods, as well as different currencies and acquiring requirements. For merchants expanding internationally, this means building a payment strategy that can meet each market's requirements without adding unnecessary complexity as the business grows. "Providing broad global coverage and payment capabilities that reflect consumer preferences is essential for merchants expanding into new regions, alongside an efficient checkout experience," said Irene Skrynova, CEO of Global Payments at Unlimit. "Making Unlimit available through Gr4vy gives businesses another route to our acquiring solutions and processing infrastructure, helping them adapt to local marke demands as they enter and grow internationally." Summarize with AI
Unlimit brings self-custody stablecoin payouts to Polygon network. Published 4 days ago Unlimit's Stable.com platform now lets Polygon users send USDT and PYUSD directly to bank accounts from self-custody wallets, eliminating the need for custodial intermediaries. Direct wallet-to-bank transfers. Unlimit has integrated its Stable.com platform into the Polygon Open Money Stack, allowing businesses and individuals to send bank transfers straight from self-custody wallets on the Polygon network. The service supports USDT and PayPal USD (PYUSD). Users can now execute transactions in their own name without moving stablecoins to a custodial platform first. Traditional stablecoin-to-fiat off-ramps require transferring funds to an intermediary before processing payouts, but this integration lets holders maintain control of their assets during the entire transfer. Eliminating custody friction. Polygon Labs CEO Marc Boiron emphasised the significance of keeping control during transactions. People should not have to surrender control of their assets simply because they want to send money to a bank account. Stable.com gives USDT and PYUSD holders a direct route from their Polygon wallets to the payment systems people already use. This is the connection between onchain money and everyday financial services that Polygon Open Money Stack was built to support. Stable.com infrastructure. Stable.com serves as Unlimit's financial platform, offering a global account with local banking details, multi-currency balance management, payment cards, and treasury tools. The platform also provides access to tokenised assets and decentralised finance protocols across multiple blockchain networks. The partnership connects Polygon-based stablecoins to Unlimit's payment infrastructure, which operates in more than 180 countries and supports payouts in over 150 currencies. Polygon Open Money Stack. Polygon Open Money Stack combines blockchain settlement, fiat on- and off-ramps, embedded wallets, and cross-chain routing capabilities. The Polygon network has processed more than eight billion cumulative transactions to date. Unified money management vision. Unlimit founder and CEO Kirill Eves outlined the company's broader vision for financial infrastructure. The future of finance will not be divided between traditional and digital systems. People and businesses will expect money to move freely across currencies, accounts and blockchain networks without having to navigate the infrastructure behind them. Adding Polygon advances its vision for Stable.com: one place to manage money, regardless of the currency, asset or network underneath it. Original coverage by electronic payments international. Use the button below to read the article on the publisher website. Related to this article
Hopscotch taps Unlimit to strengthen peak-period payments. September 3, 2026 Hopscotch has rolled out Unlimit's payment solution across its website and mobile app as the Indian children's fashion retailer looks to strengthen checkout performance during periods of peak demand. The deployment is designed to support Hopscotch during seasonal launches, festive campaigns and flash sales, when transaction volumes can rise sharply. The solution supports both domestic Unified Payments Interface (UPI) transactions and card payments, routing transactions through available payment options and retrying eligible payments that initially fail. The aim is to reduce payment failures at checkout and improve the conversion of shoppers into completed transactions during high-volume periods. Hopscotch operates a catalogue of more than 40,000 products and adds around 500 new styles each day, increasing the pressure on its payment infrastructure as demand rises during major shopping periods. Data from Unicommerce showed Indian ecommerce order volumes increased 24% year on year during the 2025 Diwali period, highlighting the scale of demand retailers can face during the country's key festive shopping windows. Unlimit provides financial infrastructure across more than 180 countries and 150 currencies, integrating with local payment methods to support domestic and cross-border commerce. Founded in 2009, the company is headquartered in San Francisco and London and also operates Stable.com, a financial platform offering multi-currency balances, cards and treasury tools. Its customers include Xiaomi, Telegram, Convera and inDrive. Unlimit CEO of Global Payments Irene Skrynova said, "The battle for conversion is not won when a shopper clicks 'buy'. It is won when the payment goes through. During peak retail periods, every avoidable failure is a customer and a sale that a retailer has already worked hard to earn." The deployment highlights the growing focus among ecommerce businesses on payment reliability as retailers look to protect conversion rates during periods of heightened online demand. Read the daily FinTech news for the intelligence and early insight that keeps industry leaders ahead of what's next. Enjoying the stories? Investors. The following investor(s) were tagged in this article.
Comviva and Unlimit partner to strengthen global payment capabilities for merchants. Unlimit, the global growth infrastructure provider, has partnered with Comviva, a global leader in digital transformation solutions, specialising in customer experience management, data monetisation, and digital financial services, to enable simplified, reliable checkout experiences for merchants. Unlimit Experts
Unlimit and Decentro partner to power cross-border growth infrastructure for Indian businesses. * Payments * 07.05.2026 09:59 am Unlimit, the global financial infrastructure platform, today announced that Decentro, India's leading fintech enabler, has integrated the platform's universal operating layer to extend its cross-border payment capabilities into new markets and payment methods. Through this integration, Decentro's partners can now access Unlimit's proprietary payment network, effectively collapsing the fragmented global payment landscape into a single, high-performance financial infrastructure. As Indian fintechs and digital platforms scale globally, they face a wall of structural complexity: disparate regulatory requirements, fragmented local payment rails, and high-latency settlement cycles. By combining Decentro's licensed payment infrastructure with both Unlimit's payments stack and the access to local alternative payment methods it provides across Europe, Southeast Asia, LATAM, and Africa, the partnership delivers a unified experience for Indian businesses looking to scale globally - without adding complexity. While these markets represent a significant opportunity for merchants - with Southeast Asia's digital economy projected to reach $1 trillion by 2030 and Africa's digital payment economy expected to reach $1.5 trillion by the same year - businesses often face operational complexity when scaling across them. The partnership moves cross-border commerce from a logistical challenge to a matter of code. By combining Decentro's licensed infrastructure with Unlimit's extensive global APM access and deep market regulatory expertise, the partnership enables customers to accept locally preferred payments such as PIX in Brazil, SEPA Instant in Europe, and regionally dominant e-wallets in APAC, without the need for multiple local entities or fragmented third-party providers. This infrastructure-first approach provides Indian businesses with a unified programmable layer for payment acceptance and fund orchestration. Together, Decentro and Unlimit handle the underlying complexity of multi-currency conversion, local compliance, and smart routing, allowing businesses to settle transactions with the speed and precision of a local domestic player. Irene Skrynova, CEO, Global Payments at Unlimit, said, "Unlimit was built to be the foundational layer for the world's most ambitious platforms. Our partnership with Decentro enables businesses anywhere to access a truly end-to-end global payments capability, empowering the next wave of innovators to scale at the speed of the internet. Our mission is to provide the programmable rails that make hyper-local market depth accessible to every business, ensuring that moving value globally is a matter of code, not geography." Rohit Taneja, Founder and CEO at Decentro, added, "To compete effectively on a global stage, our customers require access to sophisticated, high-fidelity financial infrastructure. By integrating Unlimit's proprietary stack, we are giving global merchants a definitive gateway to international markets. This partnership allows our customers to deliver localised payment experiences anywhere in the world, backed by the scale and regulatory certainty of a global leader."