Senior developer volunteer roles in Birmingham
Unify is building a social impact platform that helps get direct, practical support to people who need it most — with dignity, transparency, and real-world usability at the core.
We’re looking for a Senior Developer / Tech Lead (Volunteer) to guide the build, unblock the team, and help us ship a solid, scalable product. This is a light commitment (2–5 hours per week), but a high-leverage role: you’ll be working closely alongside the founders and our Product Manager.
What you’ll do (2–5 hrs/week)
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Lead engineering direction: keep the build clean, pragmatic, and shippable.
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Review PRs and raise code quality (architecture, security, performance, maintainability).
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Help prioritise technical work with the founders + Product Manager.
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Support and mentor a small volunteer/dev team (light-touch guidance, not heavy management).
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Set up or improve engineering foundations (CI/CD, environments, observability, release process).
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Identify risk early (security, data handling, scalability) and propose solutions.
What we’re building
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A production product with real users and real-world constraints.
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A platform where trust, safety, and reliability matter as much as features.
Tech stack
MERN stack
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MongoDB (database)
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Express.js (backend framework)
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React (frontend)
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Node.js (runtime / API layer)
What we’re looking for
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Senior-level software engineering experience (ideally with leading small teams or acting as tech lead).
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Strong product sense: you can balance “build it right” with “ship it”.
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Comfortable in ambiguous, early-stage environments.
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Solid judgement around security, data handling, and best practices.
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A collaborative communicator who can keep things calm and moving.
Nice to have (not required)
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Experience with marketplaces, payments, identity/verification flows, or credit/voucher systems.
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Experience setting up CI/CD, testing strategy, and deployment pipelines for MERN apps.
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Previous work in startups, charities, civic tech, or social impact.
Why join (and what you’ll get)
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Real ownership and influence — your decisions shape the product.
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Work directly with the founders + Product Manager.
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A mission-led build where shipping matters and the work is tangible.
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Flexibility: async-first, lightweight weekly rhythm.
Time + format
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Volunteer: 2–5 hours per week
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Remote / hybrid (where relevant)
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Async-first with a short weekly check-in
Interested?
Send a short note with your background + links (GitHub/LinkedIn/portfolio) and we’ll set up a quick chat
Connecting donors directly with individuals expriencing homelessness.

Actively Interviewing
This organisation is scheduling interviews as applications come in. They're ready to hire as soon as they find the right person. Don't miss your opportunity, apply now!
About Bank.Green
Since the Paris Agreement, global banks have poured a staggering $7.9 trillion into the fossil fuel industry. Bank.Green exists to change that.
We build tools that help people understand how their bank finances climate change, and what they can do about it, whether that’s switching to genuinely greener alternatives or pushing their existing bank to improve. To date, our bank-checking tool has been used 500,000+ times globally and has helped influence at least £25 million in customer deposits toward banks financing a cleaner future.
Through transparency, technology, and public engagement, we aim to redefine the role of banks in the climate transition.
The Role
We’re looking for an experienced engineer to act as a technical steward for the Bank.Green website, our primary public-facing platform, working alongside another senior engineer already on the project. Technical decisions are made in a collaborative, consensus-driven way, rather than top-down.
The site is transitioning to Astro, with a React-based frontend, and is deployed via Cloudflare. Content is managed via Prismic as a headless CMS, with data coming from internal GraphQL and REST APIs.
The platform serves roughly 5,000 pages, the majority of which are repeatable, programmatically generated bank profile pages built from shared templates and structured data. As a result, performance, caching, SEO, and build efficiency are key concerns.
This is a hands-on but flexible role, suited to someone who enjoys maintaining and improving real-world infrastructure that thousands of people rely on.
What you’d be working on
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Building and shipping new frontend features that improve how users understand and act on bank climate data
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Maintaining and improving the Astro/React codebase with a focus on clarity, performance, and long-term maintainability
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Improving build performance, caching strategy, and CDN efficiency to keep the site fast and cost-effective at scale
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Collaborating on architectural and technical decisions with the other senior engineer
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Reviewing and contributing pull requests, and helping establish sensible frontend and deployment patterns
Ways we work
- Fully remote and asynchronous
- Communication via Slack, Linear, and occasional calls (MS365)
- Pragmatic, low-process, mission-driven team
- Strong bias toward maintainable code and real-world impact
Commitment
This is an unpaid, volunteer role.
- Roughly 7–10 hours per week, flexible
- We’re looking for a longer-term engagement (around 6 months or more) to provide continuity and stewardship
What we’re looking for
- Required: A portfolio, GitHub profile, or equivalent code samples demonstrating real-world frontend or full-stack work
- Experience as a frontend or full-stack engineer at a mid-to-senior level
- Strong JavaScript fundamentals
- Experience with React and modern frontend tooling
- Familiarity with Astro, or strong interest in content-first frameworks (Next.js, Nuxt, Gatsby, etc.)
- Comfort reviewing code and guiding less experienced developers
- Experience working asynchronously with distributed teams
- Familiarity with Git-based workflows and Agile-style tools
- Genuine interest in climate action and environmental accountability
At Bank.Green, our mission is to shift financial institutions towards greener lending practices by empowering their customers to advocate for change.
The client requests no contact from agencies or media sales.
DIRECTOR
Remote Volunteer — Integrity Syariah Foundation
ZAKKI is a social startup focusing on creating an inclusive community for the elderly and people with disabilities. Our mission is to facilitate alms and donations collection and distribution to help the elderly and people with disabilities who work in the informal sector to get better livelihood through micro-business management, giving them greater market exposure.
We are still redesigning ZAKKI fully function product. We are expecting to develop the ZAKKI fully function product in the upcoming years.
ZAKKI provides equal volunteering opportunity for everyone regardless of age, sex/gender, color, race, creed, nationality/origin, marital status, sexual orientation, political belief, or disability that does not prohibit essential performance job functions. All matters relating to volunteering are based upon one’s ability to perform the job, as well as one’s dedication to ZAKKI’s Mission and needs.
With our expanding project and program, we needed professional remote volunteer to help us manage our social impact and social caused project/program to cater the community, society, and the beneficiaries in expeditious way.
The DIRECTOR will lead and manage the respective department that they choose to be part in. The Director will collaborate with the UIUX Manager and Developer Manager to manage and lead the project/department.
The ideal candidate is a highly analytical leader who will join our senior management team. You will be responsible for leading the company’s day-to-day business operations (managing budget, ensuring operational compliance is followed, and addressing administrative issues).
Responsibilities
• Measure the effectiveness of all processes (budget, operations, and management, etc.)
• Determine the product/project’s strategic growth as part of the executive team
• Coordinate cross-functional initiatives and projects
General Requirement:
• Very effective interpersonal skills, including mentoring, coaching, collaborating, and team building;
• Strong analytical, planning, and organizational skills with an ability to manage competing demands;
• In-depth knowledge and understanding of business needs with the ability to establish/maintain a high level of donors and collaborators' trust and confidence
• Solid understanding of and demonstrated experience in using appropriate tools:
• ⁃ Agile Project Management tools such as Jira, Asana or equivalent
• ⁃ Google Suite/Google Workspace, all Office Tools
• Excellent oral and written communications skills and experience interacting with both business and IT individuals at all levels including the executive level;
• Creative approach to problem-solving with the ability to focus on details while maintaining the “big picture” view;
• More than 5 years of professional working experience and around 2 years managerial working experience; or having MBA education with at least 1 year managerial working experience;
Specific Requirement:
Knowledge of one or more of these skills below is preferred;
• Knowledge of UI/UX Designing process
• Able to use versioning control systems such as GIT, GitLab, Github.
• Proven ability to lead software development projects and ensure objectives, goals, and commitments are met
• Personal characters/empathy-related particular issues that aim to be solved by the project;
ZAKKI;
Have keen interest toward the elderly and people with disabilities needs
Kimar:
Familiar with online and offline marketplace management
SaveMe;
Strong empathy toward the sexual misconduct victims and have a keen interest about a mental health issue
Naon;
Strong interest on anti-corruption movement and community-based empowerment
MAHA Edugames;
Keen interest in fun, casual education and strong understanding of anti-discrimination/anti-racism
Agni;
Knowledge about funeral services management
Rekan;
Keen interest in education for teens, youth, and adult self-paced learners.
Interested applicant required to fill up this Google Form, based on the team he/she interested to be part of;
https://forms.gle/6tzRgcPccKP2VjQX6
After the submission, you still able to edit your submitted response in case you need to update your supporting documents (i.e CV/Resume)
To become a socially-based technology platform with integrity, setting trends and assisting others in making the world a better place for everyone
The client requests no contact from agencies or media sales.