Behalf of our client, we are looking for Freelance Senior .NET developer with Payments Experience.

Project/Client: fintech

Location: Lithuania preferred (hybrid: remote with office presence for kickoff)

Start date: ASAP

Duration: 12 months

Role Overview:

We are looking for an experienced .NET Developer to join a fintech engineering team focused on global and regional payment integrations. You will design, develop, and support .NET services handling diverse payment protocols and ensure secure, robust financial messaging.

Requirements:

• 5+ years with C# / .NET (Core/6/7/8)
• Advanced experience building RESTful APIs; SOAP integration (legacy)
• Deep knowledge of ISO 20022 and SEPA formats, strong XML (XSD, XPath, XSLT) skills
• Experience with SWIFT (MT/MX), FPS, BACS, CHAPS, TARGET2
• Hands-on with SFTP, IBM MQ or other message queues, and file-based integration
• Security-focused: TLS, certificate pinning, PKI, HMAC, PCI-DSS, GDPR, PSD2
• Proficient with SQL Server, Docker, and API documentation (OpenAPI/Swagger)
• Familiarity/integration with platforms like PayPal, Banking Circle, or other banks/PSPs
• Strong troubleshooting and test automation for payment flows

Nice to Have:

• Experience with core banking, digital wallets, or payment gateways
• DevOps tools (CI/CD), knowledge of Open Banking, FX, ledgers, or liquidity management
• Understanding of settlement, clearing, and cut-off times

Responsibilities:

• Build and maintain .NET backend services for payment processing
• Integrate with bank APIs, manage end-to-end payment lifecycles
• Handle ISO 20022 & SWIFT message flows
• Ensure compliance, perform robust error handling, and support auditing
• Maintain technical documentation, participate in code reviews, testing, and secure CI/CD deployment

Behalf of our client, we are looking for Freelance Senior GO Developer.

Project/Client: Fintech

Location: Remote / EU (Lithuania preferred)

Start Date: ASAP

Residency Requirement: Candidates must be EU citizens or residents.

FTE: Full-time

Role Overview:

We are looking for an experienced Golang Developer to join a fast-paced cryptocurrency payments project. The role involves designing and developing secure, scalable, and efficient payment solutions while collaborating with a cross-functional team.

Must-Have Requirements:

• 5+ years of experience in Golang development
• Strong understanding of design patterns and best coding practices
• Experience with PostgreSQL, MySQL, RESTful & GraphQL APIs
• Familiarity with microservices architecture, Docker, and containerized applications
• Hands-on experience with CI/CD pipelines, Git, and DevOps practices
• Work experience with React
• Understanding of cryptography, security best practices, and performance optimization
• Experience with AWS, GCP, and infrastructure-as-code is a plus

Anoda is where great ideas come to life, and we’re currently looking for a Pre-Sales Project Manager to help us build strong relationships with clients before the project even begins.

What You’ll Be Doing:

• Conduct intro calls with potential clients

• Suggest solutions and explain the design, evaluation, and delivery process

• Nurture leads up to the hand-off point to the Project Manager

• Close deals and improve our presale workflows

• Collaborate with the design team on project estimations

What Makes You a Great Fit:

• 1+ year of experience (presale/account/PM — ideally with UI/UX or Webflow projects)

• English — C1+

• Strong communication, negotiation, and evaluation skills

• High emotional intelligence

• Bonus: Webflow knowledge

What You’ll Get:

• 100% remote work

• Flexible schedule

• Clear career path: presale → Sales Manager or Project Manager

• Learning budget and growth support

• Creative, supportive team

• Regular performance reviews

Why It’s Awesome:

• Work with clients from the US and EU

• Boost your sales and presale skills

• Fast professional growth (perfect for ambitious people!)

Experience

Senior Associate at Cognizant, Bangalore                      

From July 2023 to  July 2025

Domains - Wholesale Banking, Retail Analytics

Skills - IBM Datastage, Snowflake, Shell Scripting, Oracle, PL-SQL, T-SQL, Hive,ERwin , Azure Pipelines, CI/CD, Azure Repos, 

Azure Boards, Confluence and  Agile project management.

Responsibilities - 

• Built data pipelines for wholesale banking for critical customer and compliance data from FCRM and KYC systems into centralized data lakes, enabling real-time analytics and KPI monitoring. Automated workflows and ensured data quality to support regulatory and business intelligence needs
• Designed and developed a robust framework for DataStage jobs using pull flags, logging tables, status indicators, and control mechanisms to track job execution, completion, view availability, and file readiness. This framework facilitated automated monitoring, improved data pipeline reliability, and enabled proactive issue detection and resolution.
• Developed scalable data integration workflows for the retail domain, ingesting store operations, customer behaviour, and sales data into unified data platforms. Enabled visibility into key retail KPIs such as footfall trends, average basket size, and POS efficiency, supporting timely insights for business strategy and performance optimisation.
• Automated multiple tasks using ETL capabilities like tasks, sequencers etc. and optimised multiple jobs to enhance efficiency and minimise processing time by identifying bottlenecks in jobs, stored procedures, sql scripts etc.
• Experienced in building ETL pipelines handling data from diverse sources, including structured data from relational databases and data lakes, as well as semi-structured data from flat files (CSV, Excel, JSON), ensuring seamless integration and transformation across platforms.
• Collaborated with Product Owners, Delivery Leads, Chapter Leads, Business Analysts (BA), Subject Matter Experts (SME), Data Integration Architects (DIA), and engineers across multiple teams to ensure accurate business reporting and maintain thorough, accessible documentation.

Strategic Consultant at IBM, Bangalore                                                

From July 2019 to June 2023 

Domains - Finance, Procure to Pay, Record to Receive, Order to cash, Healthcare 

Skills - IBM Datastage, IBM Db2, PL-SQL , Shell Scripting, Celonis, Azure Data Factory, Python

Responsibilities - 

• Worked in the Research and Analytics team to design and develop ETL pipelines and automated workflows using DataStage Cloud, Celonis, and Azure Data Factory. Built a standardized dashboarding solution that streamlined data ingestion and transformation, enabling the onboarding of 40 clients in one quarter and delivering real-time analytics for improved operational insights.
• Extensive involvement in the development and maintenance of loading of Facts & Dimensions for DOW chemicals, Avnet, 

PepsiCo, Baker Huges clients to track KPIs related to Procure to Pay, Record to Receive, Order to cash for monitoring outcomes 

such Invoice Processing SLAs, Paid on time, Paid Late Invoices, Cycle time, Service Desk TAT, RITM Analysis.

• Interacted closely with IT Security and Compliance Team for security toll gates related compliance work and DBA team for 

performing migrations.

• Analyzed and provided the alternative or multiple solutions to the complex problems and foresee any problems for existing jobs.

ETL Developer at IndiumSoft, Bangalore                             

From June 2017 to June 2019 

Domain - Retail Banking

Skills - IBM Datastage, Informatica, Oracle, PL-SQL, Shell Scripting

Responsibilities - 

• Worked as an individual contributor by developing Jobs, Sequences, Data Loading, Maintenance, Archiving and other tasks.
• Prepared and maintained technical documents to remove single point dependability..
• Executing production, UAT cycles as and when required and involved in UTP and other testing processes.

ETL Developer at PTW, Bangalore                              

From Nov 2015 to May 2017 

Domain - Healthcare

Skills - IBM Datastage, SQL Server, SQL , Shell Scripting,Informatica Power Center

Responsibilities - 

• Participated in the peer reviewing process of jobs.
• Involved in UTP and other testing processes.
• Performed development , ETL mappings with Designer and data loads for multiple proof of concepts.

Junior automation and manual tester with Selenium, Postman

I am Sylvain COMBRAQUE, a full-stack freelance developer and technical speaker with strong expertise in backend and frontend development. I specialize in building scalable, high-performance systems using Go for backend services and React/Next.js for modern web applications. Over the years, I have led critical technical projects, built infrastructure that supports tens of thousands of users, and contributed to the open-source ecosystem with tools like Souin, an HTTP caching solution integrated into the official Caddy module.

My core backend expertise includes Go with tools like gqlgen and oapi-codegen, microservice communication via NATS, and high-quality software practices such as unit testing, mutation testing, race detection, and distributed tracing using OpenTelemetry. On the frontend side, I develop efficient, responsive applications with React, Next.js, and TypeScript, ensuring performance through Web Vitals optimization and clean code architecture.

I am experienced with containerized environments using Docker and Kubernetes for deployment at scale. I manage CI/CD pipelines, implement observability stacks with Prometheus and Grafana, and work with PostgreSQL and ClickHouse for relational and analytical data processing. I’ve also built caching and performance solutions for complex infrastructures and have conducted extensive benchmarking using tools like Gatling and Vegeta.

I have worked on projects for major clients including VINVIN CORP, BNP, Numspot, Platform.sh, and Redbull. My roles have included backend and frontend development, architecture design, infrastructure automation, and technical leadership. As a speaker, I have given talks internationally on topics such as HTTP caching and Go performance at conferences in Tokyo, London, Palo Alto, and other cities.

I offer full-stack development services with a focus on performance, scalability, and code quality. I bring expertise across the entire software lifecycle, from system design to production deployment. My freelance work is backed by over a decade of experience in both client projects and open-source contributions.